1184 lines
48 KiB
Python
1184 lines
48 KiB
Python
import copy
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import datetime
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import os
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import time
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try:
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import decimal
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except ImportError:
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from django.utils import _decimal as decimal # for Python 2.3
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from django.db import connection, get_creation_module
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from django.db.models import signals
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from django.db.models.query_utils import QueryWrapper
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from django.dispatch import dispatcher
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from django.conf import settings
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from django.core import validators
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from django import oldforms
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from django import newforms as forms
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from django.core.exceptions import ObjectDoesNotExist
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from django.utils.datastructures import DictWrapper
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from django.utils.functional import curry
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from django.utils.itercompat import tee
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from django.utils.text import capfirst
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from django.utils.translation import ugettext_lazy, ugettext as _
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from django.utils.encoding import smart_unicode, force_unicode, smart_str
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from django.utils.maxlength import LegacyMaxlength
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class NOT_PROVIDED:
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pass
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# Values for filter_interface.
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HORIZONTAL, VERTICAL = 1, 2
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# The values to use for "blank" in SelectFields. Will be appended to the start of most "choices" lists.
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BLANK_CHOICE_DASH = [("", "---------")]
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BLANK_CHOICE_NONE = [("", "None")]
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# returns the <ul> class for a given radio_admin value
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get_ul_class = lambda x: 'radiolist%s' % ((x == HORIZONTAL) and ' inline' or '')
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class FieldDoesNotExist(Exception):
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pass
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def manipulator_validator_unique(f, opts, self, field_data, all_data):
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"Validates that the value is unique for this field."
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lookup_type = f.get_validator_unique_lookup_type()
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try:
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old_obj = self.manager.get(**{lookup_type: field_data})
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except ObjectDoesNotExist:
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return
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if getattr(self, 'original_object', None) and self.original_object._get_pk_val() == old_obj._get_pk_val():
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return
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raise validators.ValidationError, _("%(optname)s with this %(fieldname)s already exists.") % {'optname': capfirst(opts.verbose_name), 'fieldname': f.verbose_name}
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# A guide to Field parameters:
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#
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# * name: The name of the field specifed in the model.
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# * attname: The attribute to use on the model object. This is the same as
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# "name", except in the case of ForeignKeys, where "_id" is
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# appended.
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# * db_column: The db_column specified in the model (or None).
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# * column: The database column for this field. This is the same as
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# "attname", except if db_column is specified.
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#
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# Code that introspects values, or does other dynamic things, should use
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# attname. For example, this gets the primary key value of object "obj":
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#
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# getattr(obj, opts.pk.attname)
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class Field(object):
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# Provide backwards compatibility for the maxlength attribute and
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# argument for this class and all subclasses.
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__metaclass__ = LegacyMaxlength
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# Designates whether empty strings fundamentally are allowed at the
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# database level.
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empty_strings_allowed = True
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# These track each time a Field instance is created. Used to retain order.
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# The auto_creation_counter is used for fields that Django implicitly
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# creates, creation_counter is used for all user-specified fields.
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creation_counter = 0
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auto_creation_counter = -1
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def __init__(self, verbose_name=None, name=None, primary_key=False,
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max_length=None, unique=False, blank=False, null=False,
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db_index=False, core=False, rel=None, default=NOT_PROVIDED,
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editable=True, serialize=True, prepopulate_from=None,
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unique_for_date=None, unique_for_month=None, unique_for_year=None,
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validator_list=None, choices=None, radio_admin=None, help_text='',
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db_column=None, db_tablespace=None, auto_created=False):
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self.name = name
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self.verbose_name = verbose_name
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self.primary_key = primary_key
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self.max_length, self._unique = max_length, unique
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self.blank, self.null = blank, null
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# Oracle treats the empty string ('') as null, so coerce the null
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# option whenever '' is a possible value.
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if self.empty_strings_allowed and connection.features.interprets_empty_strings_as_nulls:
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self.null = True
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self.core, self.rel, self.default = core, rel, default
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self.editable = editable
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self.serialize = serialize
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self.validator_list = validator_list or []
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self.prepopulate_from = prepopulate_from
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self.unique_for_date, self.unique_for_month = unique_for_date, unique_for_month
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self.unique_for_year = unique_for_year
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self._choices = choices or []
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self.radio_admin = radio_admin
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self.help_text = help_text
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self.db_column = db_column
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self.db_tablespace = db_tablespace or settings.DEFAULT_INDEX_TABLESPACE
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# Set db_index to True if the field has a relationship and doesn't explicitly set db_index.
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self.db_index = db_index
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# Adjust the appropriate creation counter, and save our local copy.
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if auto_created:
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self.creation_counter = Field.auto_creation_counter
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Field.auto_creation_counter -= 1
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else:
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self.creation_counter = Field.creation_counter
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Field.creation_counter += 1
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def __cmp__(self, other):
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# This is needed because bisect does not take a comparison function.
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return cmp(self.creation_counter, other.creation_counter)
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def __deepcopy__(self, memodict):
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# We don't have to deepcopy very much here, since most things are not
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# intended to be altered after initial creation.
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obj = copy.copy(self)
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if self.rel:
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obj.rel = copy.copy(self.rel)
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memodict[id(self)] = obj
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return obj
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def to_python(self, value):
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"""
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Converts the input value into the expected Python data type, raising
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validators.ValidationError if the data can't be converted. Returns the
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converted value. Subclasses should override this.
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"""
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return value
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def db_type(self):
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"""
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Returns the database column data type for this field, taking into
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account the DATABASE_ENGINE setting.
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"""
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# The default implementation of this method looks at the
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# backend-specific DATA_TYPES dictionary, looking up the field by its
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# "internal type".
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#
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# A Field class can implement the get_internal_type() method to specify
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# which *preexisting* Django Field class it's most similar to -- i.e.,
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# an XMLField is represented by a TEXT column type, which is the same
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# as the TextField Django field type, which means XMLField's
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# get_internal_type() returns 'TextField'.
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#
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# But the limitation of the get_internal_type() / DATA_TYPES approach
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# is that it cannot handle database column types that aren't already
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# mapped to one of the built-in Django field types. In this case, you
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# can implement db_type() instead of get_internal_type() to specify
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# exactly which wacky database column type you want to use.
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data = DictWrapper(self.__dict__, connection.ops.quote_name, "qn_")
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try:
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return get_creation_module().DATA_TYPES[self.get_internal_type()] % data
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except KeyError:
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return None
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def unique(self):
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return self._unique or self.primary_key
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unique = property(unique)
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def validate_full(self, field_data, all_data):
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"""
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Returns a list of errors for this field. This is the main interface,
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as it encapsulates some basic validation logic used by all fields.
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Subclasses should implement validate(), not validate_full().
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"""
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if not self.blank and not field_data:
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return [_('This field is required.')]
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try:
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self.validate(field_data, all_data)
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except validators.ValidationError, e:
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return e.messages
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return []
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def validate(self, field_data, all_data):
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"""
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Raises validators.ValidationError if field_data has any errors.
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Subclasses should override this to specify field-specific validation
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logic. This method should assume field_data has already been converted
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into the appropriate data type by Field.to_python().
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"""
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pass
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def set_attributes_from_name(self, name):
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self.name = name
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self.attname, self.column = self.get_attname_column()
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self.verbose_name = self.verbose_name or (name and name.replace('_', ' '))
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def contribute_to_class(self, cls, name):
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self.set_attributes_from_name(name)
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cls._meta.add_field(self)
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if self.choices:
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setattr(cls, 'get_%s_display' % self.name, curry(cls._get_FIELD_display, field=self))
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def get_attname(self):
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return self.name
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def get_attname_column(self):
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attname = self.get_attname()
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column = self.db_column or attname
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return attname, column
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def get_cache_name(self):
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return '_%s_cache' % self.name
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def get_internal_type(self):
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return self.__class__.__name__
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def pre_save(self, model_instance, add):
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"Returns field's value just before saving."
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return getattr(model_instance, self.attname)
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def get_db_prep_save(self, value):
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"Returns field's value prepared for saving into a database."
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return value
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def get_db_prep_lookup(self, lookup_type, value):
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"Returns field's value prepared for database lookup."
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if hasattr(value, 'as_sql'):
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sql, params = value.as_sql()
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return QueryWrapper(('(%s)' % sql), params)
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if lookup_type in ('exact', 'regex', 'iregex', 'gt', 'gte', 'lt', 'lte', 'month', 'day', 'search'):
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return [value]
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elif lookup_type in ('range', 'in'):
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return value
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elif lookup_type in ('contains', 'icontains'):
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return ["%%%s%%" % connection.ops.prep_for_like_query(value)]
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elif lookup_type == 'iexact':
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return [connection.ops.prep_for_like_query(value)]
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elif lookup_type in ('startswith', 'istartswith'):
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return ["%s%%" % connection.ops.prep_for_like_query(value)]
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elif lookup_type in ('endswith', 'iendswith'):
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return ["%%%s" % connection.ops.prep_for_like_query(value)]
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elif lookup_type == 'isnull':
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return []
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elif lookup_type == 'year':
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try:
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value = int(value)
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except ValueError:
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raise ValueError("The __year lookup type requires an integer argument")
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if settings.DATABASE_ENGINE == 'sqlite3':
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first = '%s-01-01'
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second = '%s-12-31 23:59:59.999999'
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elif not connection.features.date_field_supports_time_value and self.get_internal_type() == 'DateField':
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first = '%s-01-01'
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second = '%s-12-31'
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elif not connection.features.supports_usecs:
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first = '%s-01-01 00:00:00'
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second = '%s-12-31 23:59:59.99'
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else:
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first = '%s-01-01 00:00:00'
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second = '%s-12-31 23:59:59.999999'
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return [first % value, second % value]
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raise TypeError("Field has invalid lookup: %s" % lookup_type)
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def has_default(self):
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"Returns a boolean of whether this field has a default value."
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return self.default is not NOT_PROVIDED
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def get_default(self):
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"Returns the default value for this field."
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if self.default is not NOT_PROVIDED:
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if callable(self.default):
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return self.default()
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return force_unicode(self.default, strings_only=True)
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if not self.empty_strings_allowed or (self.null and not connection.features.interprets_empty_strings_as_nulls):
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return None
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return ""
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def get_manipulator_field_names(self, name_prefix):
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"""
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Returns a list of field names that this object adds to the manipulator.
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"""
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return [name_prefix + self.name]
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def prepare_field_objs_and_params(self, manipulator, name_prefix):
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params = {'validator_list': self.validator_list[:]}
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if self.max_length and not self.choices: # Don't give SelectFields a max_length parameter.
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params['max_length'] = self.max_length
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if self.choices:
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if self.radio_admin:
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field_objs = [oldforms.RadioSelectField]
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params['ul_class'] = get_ul_class(self.radio_admin)
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else:
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field_objs = [oldforms.SelectField]
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params['choices'] = self.get_choices_default()
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else:
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field_objs = self.get_manipulator_field_objs()
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return (field_objs, params)
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def get_manipulator_fields(self, opts, manipulator, change, name_prefix='', rel=False, follow=True):
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"""
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Returns a list of oldforms.FormField instances for this field. It
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calculates the choices at runtime, not at compile time.
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name_prefix is a prefix to prepend to the "field_name" argument.
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rel is a boolean specifying whether this field is in a related context.
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"""
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field_objs, params = self.prepare_field_objs_and_params(manipulator, name_prefix)
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# Add the "unique" validator(s).
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for field_name_list in opts.unique_together:
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if field_name_list[0] == self.name:
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params['validator_list'].append(getattr(manipulator, 'isUnique%s' % '_'.join(field_name_list)))
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# Add the "unique for..." validator(s).
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if self.unique_for_date:
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params['validator_list'].append(getattr(manipulator, 'isUnique%sFor%s' % (self.name, self.unique_for_date)))
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if self.unique_for_month:
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params['validator_list'].append(getattr(manipulator, 'isUnique%sFor%s' % (self.name, self.unique_for_month)))
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if self.unique_for_year:
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params['validator_list'].append(getattr(manipulator, 'isUnique%sFor%s' % (self.name, self.unique_for_year)))
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if self.unique and not rel:
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params['validator_list'].append(curry(manipulator_validator_unique, self, opts, manipulator))
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# Only add is_required=True if the field cannot be blank. Primary keys
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# are a special case, and fields in a related context should set this
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# as False, because they'll be caught by a separate validator --
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# RequiredIfOtherFieldGiven.
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params['is_required'] = not self.blank and not self.primary_key and not rel
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# BooleanFields (CheckboxFields) are a special case. They don't take
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# is_required.
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if isinstance(self, BooleanField):
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del params['is_required']
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# If this field is in a related context, check whether any other fields
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# in the related object have core=True. If so, add a validator --
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# RequiredIfOtherFieldsGiven -- to this FormField.
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if rel and not self.blank and not isinstance(self, AutoField) and not isinstance(self, FileField):
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# First, get the core fields, if any.
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core_field_names = []
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for f in opts.fields:
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if f.core and f != self:
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core_field_names.extend(f.get_manipulator_field_names(name_prefix))
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# Now, if there are any, add the validator to this FormField.
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if core_field_names:
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params['validator_list'].append(validators.RequiredIfOtherFieldsGiven(core_field_names, ugettext_lazy("This field is required.")))
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# Finally, add the field_names.
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field_names = self.get_manipulator_field_names(name_prefix)
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return [man(field_name=field_names[i], **params) for i, man in enumerate(field_objs)]
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def get_validator_unique_lookup_type(self):
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return '%s__exact' % self.name
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def get_manipulator_new_data(self, new_data, rel=False):
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"""
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Given the full new_data dictionary (from the manipulator), returns this
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field's data.
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"""
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if rel:
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return new_data.get(self.name, [self.get_default()])[0]
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val = new_data.get(self.name, self.get_default())
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if not self.empty_strings_allowed and val == '' and self.null:
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val = None
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return val
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|
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def get_choices(self, include_blank=True, blank_choice=BLANK_CHOICE_DASH):
|
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"Returns a list of tuples used as SelectField choices for this field."
|
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first_choice = include_blank and blank_choice or []
|
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if self.choices:
|
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return first_choice + list(self.choices)
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rel_model = self.rel.to
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if hasattr(self.rel, 'get_related_field'):
|
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lst = [(getattr(x, self.rel.get_related_field().attname), smart_unicode(x)) for x in rel_model._default_manager.complex_filter(self.rel.limit_choices_to)]
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else:
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lst = [(x._get_pk_val(), smart_unicode(x)) for x in rel_model._default_manager.complex_filter(self.rel.limit_choices_to)]
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return first_choice + lst
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|
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def get_choices_default(self):
|
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if self.radio_admin:
|
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return self.get_choices(include_blank=self.blank, blank_choice=BLANK_CHOICE_NONE)
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else:
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return self.get_choices()
|
|
|
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def _get_val_from_obj(self, obj):
|
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if obj:
|
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return getattr(obj, self.attname)
|
|
else:
|
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return self.get_default()
|
|
|
|
def flatten_data(self, follow, obj=None):
|
|
"""
|
|
Returns a dictionary mapping the field's manipulator field names to its
|
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"flattened" string values for the admin view. obj is the instance to
|
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extract the values from.
|
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"""
|
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return {self.attname: self._get_val_from_obj(obj)}
|
|
|
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def get_follow(self, override=None):
|
|
if override != None:
|
|
return override
|
|
else:
|
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return self.editable
|
|
|
|
def bind(self, fieldmapping, original, bound_field_class):
|
|
return bound_field_class(self, fieldmapping, original)
|
|
|
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def _get_choices(self):
|
|
if hasattr(self._choices, 'next'):
|
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choices, self._choices = tee(self._choices)
|
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return choices
|
|
else:
|
|
return self._choices
|
|
choices = property(_get_choices)
|
|
|
|
def save_form_data(self, instance, data):
|
|
setattr(instance, self.name, data)
|
|
|
|
def formfield(self, form_class=forms.CharField, **kwargs):
|
|
"Returns a django.newforms.Field instance for this database Field."
|
|
defaults = {'required': not self.blank, 'label': capfirst(self.verbose_name), 'help_text': self.help_text}
|
|
if self.choices:
|
|
defaults['widget'] = forms.Select(choices=self.get_choices(include_blank=self.blank or not (self.has_default() or 'initial' in kwargs)))
|
|
if self.has_default():
|
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defaults['initial'] = self.get_default()
|
|
defaults.update(kwargs)
|
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return form_class(**defaults)
|
|
|
|
def value_from_object(self, obj):
|
|
"Returns the value of this field in the given model instance."
|
|
return getattr(obj, self.attname)
|
|
|
|
class AutoField(Field):
|
|
empty_strings_allowed = False
|
|
def __init__(self, *args, **kwargs):
|
|
assert kwargs.get('primary_key', False) is True, "%ss must have primary_key=True." % self.__class__.__name__
|
|
kwargs['blank'] = True
|
|
Field.__init__(self, *args, **kwargs)
|
|
|
|
def to_python(self, value):
|
|
if value is None:
|
|
return value
|
|
try:
|
|
return int(value)
|
|
except (TypeError, ValueError):
|
|
raise validators.ValidationError, _("This value must be an integer.")
|
|
|
|
def get_manipulator_fields(self, opts, manipulator, change, name_prefix='', rel=False, follow=True):
|
|
if not rel:
|
|
return [] # Don't add a FormField unless it's in a related context.
|
|
return Field.get_manipulator_fields(self, opts, manipulator, change, name_prefix, rel, follow)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.HiddenField]
|
|
|
|
def get_manipulator_new_data(self, new_data, rel=False):
|
|
# Never going to be called
|
|
# Not in main change pages
|
|
# ignored in related context
|
|
if not rel:
|
|
return None
|
|
return Field.get_manipulator_new_data(self, new_data, rel)
|
|
|
|
def contribute_to_class(self, cls, name):
|
|
assert not cls._meta.has_auto_field, "A model can't have more than one AutoField."
|
|
super(AutoField, self).contribute_to_class(cls, name)
|
|
cls._meta.has_auto_field = True
|
|
cls._meta.auto_field = self
|
|
|
|
def formfield(self, **kwargs):
|
|
return None
|
|
|
|
class BooleanField(Field):
|
|
def __init__(self, *args, **kwargs):
|
|
kwargs['blank'] = True
|
|
Field.__init__(self, *args, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "BooleanField"
|
|
|
|
def to_python(self, value):
|
|
if value in (True, False): return value
|
|
if value in ('t', 'True', '1'): return True
|
|
if value in ('f', 'False', '0'): return False
|
|
raise validators.ValidationError, _("This value must be either True or False.")
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.CheckboxField]
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.BooleanField}
|
|
defaults.update(kwargs)
|
|
return super(BooleanField, self).formfield(**defaults)
|
|
|
|
class CharField(Field):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.TextField]
|
|
|
|
def get_internal_type(self):
|
|
return "CharField"
|
|
|
|
def to_python(self, value):
|
|
if isinstance(value, basestring):
|
|
return value
|
|
if value is None:
|
|
if self.null:
|
|
return value
|
|
else:
|
|
raise validators.ValidationError, ugettext_lazy("This field cannot be null.")
|
|
return smart_unicode(value)
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'max_length': self.max_length}
|
|
defaults.update(kwargs)
|
|
return super(CharField, self).formfield(**defaults)
|
|
|
|
# TODO: Maybe move this into contrib, because it's specialized.
|
|
class CommaSeparatedIntegerField(CharField):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.CommaSeparatedIntegerField]
|
|
|
|
class DateField(Field):
|
|
empty_strings_allowed = False
|
|
def __init__(self, verbose_name=None, name=None, auto_now=False, auto_now_add=False, **kwargs):
|
|
self.auto_now, self.auto_now_add = auto_now, auto_now_add
|
|
#HACKs : auto_now_add/auto_now should be done as a default or a pre_save.
|
|
if auto_now or auto_now_add:
|
|
kwargs['editable'] = False
|
|
kwargs['blank'] = True
|
|
Field.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "DateField"
|
|
|
|
def to_python(self, value):
|
|
if value is None:
|
|
return value
|
|
if isinstance(value, datetime.datetime):
|
|
return value.date()
|
|
if isinstance(value, datetime.date):
|
|
return value
|
|
validators.isValidANSIDate(value, None)
|
|
try:
|
|
return datetime.date(*time.strptime(value, '%Y-%m-%d')[:3])
|
|
except ValueError:
|
|
raise validators.ValidationError, _('Enter a valid date in YYYY-MM-DD format.')
|
|
|
|
def get_db_prep_lookup(self, lookup_type, value):
|
|
if lookup_type in ('range', 'in'):
|
|
value = [smart_unicode(v) for v in value]
|
|
elif lookup_type in ('exact', 'gt', 'gte', 'lt', 'lte') and hasattr(value, 'strftime'):
|
|
value = value.strftime('%Y-%m-%d')
|
|
else:
|
|
value = smart_unicode(value)
|
|
return Field.get_db_prep_lookup(self, lookup_type, value)
|
|
|
|
def pre_save(self, model_instance, add):
|
|
if self.auto_now or (self.auto_now_add and add):
|
|
value = datetime.datetime.now()
|
|
setattr(model_instance, self.attname, value)
|
|
return value
|
|
else:
|
|
return super(DateField, self).pre_save(model_instance, add)
|
|
|
|
def contribute_to_class(self, cls, name):
|
|
super(DateField,self).contribute_to_class(cls, name)
|
|
if not self.null:
|
|
setattr(cls, 'get_next_by_%s' % self.name,
|
|
curry(cls._get_next_or_previous_by_FIELD, field=self, is_next=True))
|
|
setattr(cls, 'get_previous_by_%s' % self.name,
|
|
curry(cls._get_next_or_previous_by_FIELD, field=self, is_next=False))
|
|
|
|
# Needed because of horrible auto_now[_add] behaviour wrt. editable
|
|
def get_follow(self, override=None):
|
|
if override != None:
|
|
return override
|
|
else:
|
|
return self.editable or self.auto_now or self.auto_now_add
|
|
|
|
def get_db_prep_save(self, value):
|
|
# Casts dates into string format for entry into database.
|
|
if value is not None:
|
|
try:
|
|
value = value.strftime('%Y-%m-%d')
|
|
except AttributeError:
|
|
# If value is already a string it won't have a strftime method,
|
|
# so we'll just let it pass through.
|
|
pass
|
|
return Field.get_db_prep_save(self, value)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.DateField]
|
|
|
|
def flatten_data(self, follow, obj=None):
|
|
val = self._get_val_from_obj(obj)
|
|
return {self.attname: (val is not None and val.strftime("%Y-%m-%d") or '')}
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.DateField}
|
|
defaults.update(kwargs)
|
|
return super(DateField, self).formfield(**defaults)
|
|
|
|
class DateTimeField(DateField):
|
|
def get_internal_type(self):
|
|
return "DateTimeField"
|
|
|
|
def to_python(self, value):
|
|
if value is None:
|
|
return value
|
|
if isinstance(value, datetime.datetime):
|
|
return value
|
|
if isinstance(value, datetime.date):
|
|
return datetime.datetime(value.year, value.month, value.day)
|
|
try: # Seconds are optional, so try converting seconds first.
|
|
return datetime.datetime(*time.strptime(value, '%Y-%m-%d %H:%M:%S')[:6])
|
|
except ValueError:
|
|
try: # Try without seconds.
|
|
return datetime.datetime(*time.strptime(value, '%Y-%m-%d %H:%M')[:5])
|
|
except ValueError: # Try without hour/minutes/seconds.
|
|
try:
|
|
return datetime.datetime(*time.strptime(value, '%Y-%m-%d')[:3])
|
|
except ValueError:
|
|
raise validators.ValidationError, _('Enter a valid date/time in YYYY-MM-DD HH:MM format.')
|
|
|
|
def get_db_prep_save(self, value):
|
|
# Casts dates into string format for entry into database.
|
|
if value is not None:
|
|
# MySQL will throw a warning if microseconds are given, because it
|
|
# doesn't support microseconds.
|
|
if not connection.features.supports_usecs and hasattr(value, 'microsecond'):
|
|
value = value.replace(microsecond=0)
|
|
value = smart_unicode(value)
|
|
return Field.get_db_prep_save(self, value)
|
|
|
|
def get_db_prep_lookup(self, lookup_type, value):
|
|
if lookup_type in ('range', 'in'):
|
|
value = [smart_unicode(v) for v in value]
|
|
else:
|
|
value = smart_unicode(value)
|
|
return Field.get_db_prep_lookup(self, lookup_type, value)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.DateField, oldforms.TimeField]
|
|
|
|
def get_manipulator_field_names(self, name_prefix):
|
|
return [name_prefix + self.name + '_date', name_prefix + self.name + '_time']
|
|
|
|
def get_manipulator_new_data(self, new_data, rel=False):
|
|
date_field, time_field = self.get_manipulator_field_names('')
|
|
if rel:
|
|
d = new_data.get(date_field, [None])[0]
|
|
t = new_data.get(time_field, [None])[0]
|
|
else:
|
|
d = new_data.get(date_field, None)
|
|
t = new_data.get(time_field, None)
|
|
if d is not None and t is not None:
|
|
return datetime.datetime.combine(d, t)
|
|
return self.get_default()
|
|
|
|
def flatten_data(self,follow, obj = None):
|
|
val = self._get_val_from_obj(obj)
|
|
date_field, time_field = self.get_manipulator_field_names('')
|
|
return {date_field: (val is not None and val.strftime("%Y-%m-%d") or ''),
|
|
time_field: (val is not None and val.strftime("%H:%M:%S") or '')}
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.DateTimeField}
|
|
defaults.update(kwargs)
|
|
return super(DateTimeField, self).formfield(**defaults)
|
|
|
|
class DecimalField(Field):
|
|
empty_strings_allowed = False
|
|
def __init__(self, verbose_name=None, name=None, max_digits=None, decimal_places=None, **kwargs):
|
|
self.max_digits, self.decimal_places = max_digits, decimal_places
|
|
Field.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "DecimalField"
|
|
|
|
def to_python(self, value):
|
|
if value is None:
|
|
return value
|
|
try:
|
|
return decimal.Decimal(value)
|
|
except decimal.InvalidOperation:
|
|
raise validators.ValidationError(
|
|
_("This value must be a decimal number."))
|
|
|
|
def _format(self, value):
|
|
if isinstance(value, basestring) or value is None:
|
|
return value
|
|
else:
|
|
return self.format_number(value)
|
|
|
|
def format_number(self, value):
|
|
"""
|
|
Formats a number into a string with the requisite number of digits and
|
|
decimal places.
|
|
"""
|
|
num_chars = self.max_digits
|
|
# Allow for a decimal point
|
|
if self.decimal_places > 0:
|
|
num_chars += 1
|
|
# Allow for a minus sign
|
|
if value < 0:
|
|
num_chars += 1
|
|
|
|
return u"%.*f" % (self.decimal_places, value)
|
|
|
|
def get_db_prep_save(self, value):
|
|
value = self._format(value)
|
|
return super(DecimalField, self).get_db_prep_save(value)
|
|
|
|
def get_db_prep_lookup(self, lookup_type, value):
|
|
if lookup_type in ('range', 'in'):
|
|
value = [self._format(v) for v in value]
|
|
else:
|
|
value = self._format(value)
|
|
return super(DecimalField, self).get_db_prep_lookup(lookup_type, value)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [curry(oldforms.DecimalField, max_digits=self.max_digits, decimal_places=self.decimal_places)]
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {
|
|
'max_digits': self.max_digits,
|
|
'decimal_places': self.decimal_places,
|
|
'form_class': forms.DecimalField,
|
|
}
|
|
defaults.update(kwargs)
|
|
return super(DecimalField, self).formfield(**defaults)
|
|
|
|
class EmailField(CharField):
|
|
def __init__(self, *args, **kwargs):
|
|
kwargs['max_length'] = kwargs.get('max_length', 75)
|
|
CharField.__init__(self, *args, **kwargs)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.EmailField]
|
|
|
|
def validate(self, field_data, all_data):
|
|
validators.isValidEmail(field_data, all_data)
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.EmailField}
|
|
defaults.update(kwargs)
|
|
return super(EmailField, self).formfield(**defaults)
|
|
|
|
class FileField(Field):
|
|
def __init__(self, verbose_name=None, name=None, upload_to='', **kwargs):
|
|
self.upload_to = upload_to
|
|
kwargs['max_length'] = kwargs.get('max_length', 100)
|
|
Field.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "FileField"
|
|
|
|
def get_db_prep_save(self, value):
|
|
"Returns field's value prepared for saving into a database."
|
|
# Need to convert UploadedFile objects provided via a form to unicode for database insertion
|
|
if hasattr(value, 'name'):
|
|
return value.name
|
|
elif value is None:
|
|
return None
|
|
else:
|
|
return unicode(value)
|
|
|
|
def get_manipulator_fields(self, opts, manipulator, change, name_prefix='', rel=False, follow=True):
|
|
field_list = Field.get_manipulator_fields(self, opts, manipulator, change, name_prefix, rel, follow)
|
|
if not self.blank:
|
|
if rel:
|
|
# This validator makes sure FileFields work in a related context.
|
|
class RequiredFileField(object):
|
|
def __init__(self, other_field_names, other_file_field_name):
|
|
self.other_field_names = other_field_names
|
|
self.other_file_field_name = other_file_field_name
|
|
self.always_test = True
|
|
def __call__(self, field_data, all_data):
|
|
if not all_data.get(self.other_file_field_name, False):
|
|
c = validators.RequiredIfOtherFieldsGiven(self.other_field_names, ugettext_lazy("This field is required."))
|
|
c(field_data, all_data)
|
|
# First, get the core fields, if any.
|
|
core_field_names = []
|
|
for f in opts.fields:
|
|
if f.core and f != self:
|
|
core_field_names.extend(f.get_manipulator_field_names(name_prefix))
|
|
# Now, if there are any, add the validator to this FormField.
|
|
if core_field_names:
|
|
field_list[0].validator_list.append(RequiredFileField(core_field_names, field_list[1].field_name))
|
|
else:
|
|
v = validators.RequiredIfOtherFieldNotGiven(field_list[1].field_name, ugettext_lazy("This field is required."))
|
|
v.always_test = True
|
|
field_list[0].validator_list.append(v)
|
|
field_list[0].is_required = field_list[1].is_required = False
|
|
|
|
# If the raw path is passed in, validate it's under the MEDIA_ROOT.
|
|
def isWithinMediaRoot(field_data, all_data):
|
|
f = os.path.abspath(os.path.join(settings.MEDIA_ROOT, field_data))
|
|
if not f.startswith(os.path.abspath(os.path.normpath(settings.MEDIA_ROOT))):
|
|
raise validators.ValidationError, _("Enter a valid filename.")
|
|
field_list[1].validator_list.append(isWithinMediaRoot)
|
|
return field_list
|
|
|
|
def contribute_to_class(self, cls, name):
|
|
super(FileField, self).contribute_to_class(cls, name)
|
|
setattr(cls, 'get_%s_filename' % self.name, curry(cls._get_FIELD_filename, field=self))
|
|
setattr(cls, 'get_%s_url' % self.name, curry(cls._get_FIELD_url, field=self))
|
|
setattr(cls, 'get_%s_size' % self.name, curry(cls._get_FIELD_size, field=self))
|
|
setattr(cls, 'save_%s_file' % self.name, lambda instance, filename, raw_field, save=True: instance._save_FIELD_file(self, filename, raw_field, save))
|
|
dispatcher.connect(self.delete_file, signal=signals.post_delete, sender=cls)
|
|
|
|
def delete_file(self, instance):
|
|
if getattr(instance, self.attname):
|
|
file_name = getattr(instance, 'get_%s_filename' % self.name)()
|
|
# If the file exists and no other object of this type references it,
|
|
# delete it from the filesystem.
|
|
if os.path.exists(file_name) and \
|
|
not instance.__class__._default_manager.filter(**{'%s__exact' % self.name: getattr(instance, self.attname)}):
|
|
os.remove(file_name)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.FileUploadField, oldforms.HiddenField]
|
|
|
|
def get_manipulator_field_names(self, name_prefix):
|
|
return [name_prefix + self.name + '_file', name_prefix + self.name]
|
|
|
|
def save_file(self, new_data, new_object, original_object, change, rel, save=True):
|
|
upload_field_name = self.get_manipulator_field_names('')[0]
|
|
if new_data.get(upload_field_name, False):
|
|
if rel:
|
|
file = new_data[upload_field_name][0]
|
|
else:
|
|
file = new_data[upload_field_name]
|
|
|
|
if not file:
|
|
return
|
|
|
|
# Backwards-compatible support for files-as-dictionaries.
|
|
# We don't need to raise a warning because Model._save_FIELD_file will
|
|
# do so for us.
|
|
try:
|
|
file_name = file.name
|
|
except AttributeError:
|
|
file_name = file['filename']
|
|
|
|
func = getattr(new_object, 'save_%s_file' % self.name)
|
|
func(file_name, file, save)
|
|
|
|
def get_directory_name(self):
|
|
return os.path.normpath(force_unicode(datetime.datetime.now().strftime(smart_str(self.upload_to))))
|
|
|
|
def get_filename(self, filename):
|
|
from django.utils.text import get_valid_filename
|
|
f = os.path.join(self.get_directory_name(), get_valid_filename(os.path.basename(filename)))
|
|
return os.path.normpath(f)
|
|
|
|
def save_form_data(self, instance, data):
|
|
from django.core.files.uploadedfile import UploadedFile
|
|
if data and isinstance(data, UploadedFile):
|
|
getattr(instance, "save_%s_file" % self.name)(data.name, data, save=False)
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.FileField}
|
|
# If a file has been provided previously, then the form doesn't require
|
|
# that a new file is provided this time.
|
|
# The code to mark the form field as not required is used by
|
|
# form_for_instance, but can probably be removed once form_for_instance
|
|
# is gone. ModelForm uses a different method to check for an existing file.
|
|
if 'initial' in kwargs:
|
|
defaults['required'] = False
|
|
defaults.update(kwargs)
|
|
return super(FileField, self).formfield(**defaults)
|
|
|
|
class FilePathField(Field):
|
|
def __init__(self, verbose_name=None, name=None, path='', match=None, recursive=False, **kwargs):
|
|
self.path, self.match, self.recursive = path, match, recursive
|
|
kwargs['max_length'] = kwargs.get('max_length', 100)
|
|
Field.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {
|
|
'path': self.path,
|
|
'match': self.match,
|
|
'recursive': self.recursive,
|
|
'form_class': forms.FilePathField,
|
|
}
|
|
defaults.update(kwargs)
|
|
return super(FilePathField, self).formfield(**defaults)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [curry(oldforms.FilePathField, path=self.path, match=self.match, recursive=self.recursive)]
|
|
|
|
def get_internal_type(self):
|
|
return "FilePathField"
|
|
|
|
class FloatField(Field):
|
|
empty_strings_allowed = False
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.FloatField]
|
|
|
|
def get_internal_type(self):
|
|
return "FloatField"
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.FloatField}
|
|
defaults.update(kwargs)
|
|
return super(FloatField, self).formfield(**defaults)
|
|
|
|
class ImageField(FileField):
|
|
def __init__(self, verbose_name=None, name=None, width_field=None, height_field=None, **kwargs):
|
|
self.width_field, self.height_field = width_field, height_field
|
|
FileField.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.ImageUploadField, oldforms.HiddenField]
|
|
|
|
def contribute_to_class(self, cls, name):
|
|
super(ImageField, self).contribute_to_class(cls, name)
|
|
# Add get_BLAH_width and get_BLAH_height methods, but only if the
|
|
# image field doesn't have width and height cache fields.
|
|
if not self.width_field:
|
|
setattr(cls, 'get_%s_width' % self.name, curry(cls._get_FIELD_width, field=self))
|
|
if not self.height_field:
|
|
setattr(cls, 'get_%s_height' % self.name, curry(cls._get_FIELD_height, field=self))
|
|
|
|
def get_internal_type(self):
|
|
return "ImageField"
|
|
|
|
def save_file(self, new_data, new_object, original_object, change, rel, save=True):
|
|
FileField.save_file(self, new_data, new_object, original_object, change, rel, save)
|
|
# If the image has height and/or width field(s) and they haven't
|
|
# changed, set the width and/or height field(s) back to their original
|
|
# values.
|
|
if change and (self.width_field or self.height_field) and save:
|
|
if self.width_field:
|
|
setattr(new_object, self.width_field, getattr(original_object, self.width_field))
|
|
if self.height_field:
|
|
setattr(new_object, self.height_field, getattr(original_object, self.height_field))
|
|
new_object.save()
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.ImageField}
|
|
defaults.update(kwargs)
|
|
return super(ImageField, self).formfield(**defaults)
|
|
|
|
class IntegerField(Field):
|
|
empty_strings_allowed = False
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.IntegerField]
|
|
|
|
def get_internal_type(self):
|
|
return "IntegerField"
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.IntegerField}
|
|
defaults.update(kwargs)
|
|
return super(IntegerField, self).formfield(**defaults)
|
|
|
|
class IPAddressField(Field):
|
|
empty_strings_allowed = False
|
|
def __init__(self, *args, **kwargs):
|
|
kwargs['max_length'] = 15
|
|
Field.__init__(self, *args, **kwargs)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.IPAddressField]
|
|
|
|
def get_internal_type(self):
|
|
return "IPAddressField"
|
|
|
|
def validate(self, field_data, all_data):
|
|
validators.isValidIPAddress4(field_data, None)
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.IPAddressField}
|
|
defaults.update(kwargs)
|
|
return super(IPAddressField, self).formfield(**defaults)
|
|
|
|
class NullBooleanField(Field):
|
|
empty_strings_allowed = False
|
|
def __init__(self, *args, **kwargs):
|
|
kwargs['null'] = True
|
|
Field.__init__(self, *args, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "NullBooleanField"
|
|
|
|
def to_python(self, value):
|
|
if value in (None, True, False): return value
|
|
if value in ('None'): return None
|
|
if value in ('t', 'True', '1'): return True
|
|
if value in ('f', 'False', '0'): return False
|
|
raise validators.ValidationError, _("This value must be either None, True or False.")
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.NullBooleanField]
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.NullBooleanField}
|
|
defaults.update(kwargs)
|
|
return super(NullBooleanField, self).formfield(**defaults)
|
|
|
|
class PhoneNumberField(IntegerField):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.PhoneNumberField]
|
|
|
|
def get_internal_type(self):
|
|
return "PhoneNumberField"
|
|
|
|
def validate(self, field_data, all_data):
|
|
validators.isValidPhone(field_data, all_data)
|
|
|
|
def formfield(self, **kwargs):
|
|
from django.contrib.localflavor.us.forms import USPhoneNumberField
|
|
defaults = {'form_class': USPhoneNumberField}
|
|
defaults.update(kwargs)
|
|
return super(PhoneNumberField, self).formfield(**defaults)
|
|
|
|
class PositiveIntegerField(IntegerField):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.PositiveIntegerField]
|
|
|
|
def get_internal_type(self):
|
|
return "PositiveIntegerField"
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'min_value': 0}
|
|
defaults.update(kwargs)
|
|
return super(PositiveIntegerField, self).formfield(**defaults)
|
|
|
|
class PositiveSmallIntegerField(IntegerField):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.PositiveSmallIntegerField]
|
|
|
|
def get_internal_type(self):
|
|
return "PositiveSmallIntegerField"
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'min_value': 0}
|
|
defaults.update(kwargs)
|
|
return super(PositiveSmallIntegerField, self).formfield(**defaults)
|
|
|
|
class SlugField(CharField):
|
|
def __init__(self, *args, **kwargs):
|
|
kwargs['max_length'] = kwargs.get('max_length', 50)
|
|
kwargs.setdefault('validator_list', []).append(validators.isSlug)
|
|
# Set db_index=True unless it's been set manually.
|
|
if 'db_index' not in kwargs:
|
|
kwargs['db_index'] = True
|
|
super(SlugField, self).__init__(*args, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "SlugField"
|
|
|
|
class SmallIntegerField(IntegerField):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.SmallIntegerField]
|
|
|
|
def get_internal_type(self):
|
|
return "SmallIntegerField"
|
|
|
|
class TextField(Field):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.LargeTextField]
|
|
|
|
def get_internal_type(self):
|
|
return "TextField"
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'widget': forms.Textarea}
|
|
defaults.update(kwargs)
|
|
return super(TextField, self).formfield(**defaults)
|
|
|
|
class TimeField(Field):
|
|
empty_strings_allowed = False
|
|
def __init__(self, verbose_name=None, name=None, auto_now=False, auto_now_add=False, **kwargs):
|
|
self.auto_now, self.auto_now_add = auto_now, auto_now_add
|
|
if auto_now or auto_now_add:
|
|
kwargs['editable'] = False
|
|
Field.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_internal_type(self):
|
|
return "TimeField"
|
|
|
|
def get_db_prep_lookup(self, lookup_type, value):
|
|
if connection.features.time_field_needs_date:
|
|
# Oracle requires a date in order to parse.
|
|
def prep(value):
|
|
if isinstance(value, datetime.time):
|
|
value = datetime.datetime.combine(datetime.date(1900, 1, 1), value)
|
|
return smart_unicode(value)
|
|
else:
|
|
prep = smart_unicode
|
|
if lookup_type in ('range', 'in'):
|
|
value = [prep(v) for v in value]
|
|
else:
|
|
value = prep(value)
|
|
return Field.get_db_prep_lookup(self, lookup_type, value)
|
|
|
|
def pre_save(self, model_instance, add):
|
|
if self.auto_now or (self.auto_now_add and add):
|
|
value = datetime.datetime.now().time()
|
|
setattr(model_instance, self.attname, value)
|
|
return value
|
|
else:
|
|
return super(TimeField, self).pre_save(model_instance, add)
|
|
|
|
def get_db_prep_save(self, value):
|
|
# Casts dates into string format for entry into database.
|
|
if value is not None:
|
|
# MySQL will throw a warning if microseconds are given, because it
|
|
# doesn't support microseconds.
|
|
if not connection.features.supports_usecs and hasattr(value, 'microsecond'):
|
|
value = value.replace(microsecond=0)
|
|
if connection.features.time_field_needs_date:
|
|
# cx_Oracle expects a datetime.datetime to persist into TIMESTAMP field.
|
|
if isinstance(value, datetime.time):
|
|
value = datetime.datetime(1900, 1, 1, value.hour, value.minute,
|
|
value.second, value.microsecond)
|
|
elif isinstance(value, basestring):
|
|
value = datetime.datetime(*(time.strptime(value, '%H:%M:%S')[:6]))
|
|
else:
|
|
value = smart_unicode(value)
|
|
return Field.get_db_prep_save(self, value)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.TimeField]
|
|
|
|
def flatten_data(self,follow, obj = None):
|
|
val = self._get_val_from_obj(obj)
|
|
return {self.attname: (val is not None and val.strftime("%H:%M:%S") or '')}
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.TimeField}
|
|
defaults.update(kwargs)
|
|
return super(TimeField, self).formfield(**defaults)
|
|
|
|
class URLField(CharField):
|
|
def __init__(self, verbose_name=None, name=None, verify_exists=True, **kwargs):
|
|
kwargs['max_length'] = kwargs.get('max_length', 200)
|
|
if verify_exists:
|
|
kwargs.setdefault('validator_list', []).append(validators.isExistingURL)
|
|
self.verify_exists = verify_exists
|
|
CharField.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.URLField]
|
|
|
|
def formfield(self, **kwargs):
|
|
defaults = {'form_class': forms.URLField, 'verify_exists': self.verify_exists}
|
|
defaults.update(kwargs)
|
|
return super(URLField, self).formfield(**defaults)
|
|
|
|
class USStateField(Field):
|
|
def get_manipulator_field_objs(self):
|
|
return [oldforms.USStateField]
|
|
|
|
def get_internal_type(self):
|
|
return "USStateField"
|
|
|
|
def formfield(self, **kwargs):
|
|
from django.contrib.localflavor.us.forms import USStateSelect
|
|
defaults = {'widget': USStateSelect}
|
|
defaults.update(kwargs)
|
|
return super(USStateField, self).formfield(**defaults)
|
|
|
|
class XMLField(TextField):
|
|
def __init__(self, verbose_name=None, name=None, schema_path=None, **kwargs):
|
|
self.schema_path = schema_path
|
|
Field.__init__(self, verbose_name, name, **kwargs)
|
|
|
|
def get_manipulator_field_objs(self):
|
|
return [curry(oldforms.XMLLargeTextField, schema_path=self.schema_path)]
|
|
|