from django.core import validators from django.core.exceptions import PermissionDenied from django.utils.html import escape from django.utils.safestring import mark_safe from django.conf import settings from django.utils.translation import ugettext, ungettext from django.utils.encoding import smart_unicode, force_unicode FORM_FIELD_ID_PREFIX = 'id_' class EmptyValue(Exception): "This is raised when empty data is provided" pass class Manipulator(object): # List of permission strings. User must have at least one to manipulate. # None means everybody has permission. required_permission = '' def __init__(self): # List of FormField objects self.fields = [] def __getitem__(self, field_name): "Looks up field by field name; raises KeyError on failure" for field in self.fields: if field.field_name == field_name: return field raise KeyError, "Field %s not found\n%s" % (field_name, repr(self.fields)) def __delitem__(self, field_name): "Deletes the field with the given field name; raises KeyError on failure" for i, field in enumerate(self.fields): if field.field_name == field_name: del self.fields[i] return raise KeyError, "Field %s not found" % field_name def check_permissions(self, user): """Confirms user has required permissions to use this manipulator; raises PermissionDenied on failure.""" if self.required_permission is None: return if user.has_perm(self.required_permission): return raise PermissionDenied def prepare(self, new_data): """ Makes any necessary preparations to new_data, in place, before data has been validated. """ for field in self.fields: field.prepare(new_data) def get_validation_errors(self, new_data): "Returns dictionary mapping field_names to error-message lists" errors = {} self.prepare(new_data) for field in self.fields: errors.update(field.get_validation_errors(new_data)) val_name = 'validate_%s' % field.field_name if hasattr(self, val_name): val = getattr(self, val_name) try: field.run_validator(new_data, val) except (validators.ValidationError, validators.CriticalValidationError), e: errors.setdefault(field.field_name, []).extend(e.messages) # if field.is_required and not new_data.get(field.field_name, False): # errors.setdefault(field.field_name, []).append(ugettext_lazy('This field is required.')) # continue # try: # validator_list = field.validator_list # if hasattr(self, 'validate_%s' % field.field_name): # validator_list.append(getattr(self, 'validate_%s' % field.field_name)) # for validator in validator_list: # if field.is_required or new_data.get(field.field_name, False) or hasattr(validator, 'always_test'): # try: # if hasattr(field, 'requires_data_list'): # validator(new_data.getlist(field.field_name), new_data) # else: # validator(new_data.get(field.field_name, ''), new_data) # except validators.ValidationError, e: # errors.setdefault(field.field_name, []).extend(e.messages) # # If a CriticalValidationError is raised, ignore any other ValidationErrors # # for this particular field # except validators.CriticalValidationError, e: # errors.setdefault(field.field_name, []).extend(e.messages) return errors def save(self, new_data): "Saves the changes and returns the new object" # changes is a dictionary-like object keyed by field_name raise NotImplementedError def do_html2python(self, new_data): """ Convert the data from HTML data types to Python datatypes, changing the object in place. This happens after validation but before storage. This must happen after validation because html2python functions aren't expected to deal with invalid input. """ for field in self.fields: field.convert_post_data(new_data) class FormWrapper(object): """ A wrapper linking a Manipulator to the template system. This allows dictionary-style lookups of formfields. It also handles feeding prepopulated data and validation error messages to the formfield objects. """ def __init__(self, manipulator, data=None, error_dict=None, edit_inline=True): self.manipulator = manipulator if data is None: data = {} if error_dict is None: error_dict = {} self.data = data self.error_dict = error_dict self._inline_collections = None self.edit_inline = edit_inline def __repr__(self): return repr(self.__dict__) def __getitem__(self, key): for field in self.manipulator.fields: if field.field_name == key: data = field.extract_data(self.data) return FormFieldWrapper(field, data, self.error_dict.get(field.field_name, [])) if self.edit_inline: self.fill_inline_collections() for inline_collection in self._inline_collections: # The 'orig_name' comparison is for backwards compatibility # with hand-crafted forms. if inline_collection.name == key or (':' not in key and inline_collection.orig_name == key): return inline_collection raise KeyError, "Could not find Formfield or InlineObjectCollection named %r" % key def fill_inline_collections(self): if not self._inline_collections: ic = [] related_objects = self.manipulator.get_related_objects() for rel_obj in related_objects: data = rel_obj.extract_data(self.data) inline_collection = InlineObjectCollection(self.manipulator, rel_obj, data, self.error_dict) ic.append(inline_collection) self._inline_collections = ic def has_errors(self): return self.error_dict != {} def _get_fields(self): try: return self._fields except AttributeError: self._fields = [self.__getitem__(field.field_name) for field in self.manipulator.fields] return self._fields fields = property(_get_fields) class FormFieldWrapper(object): "A bridge between the template system and an individual form field. Used by FormWrapper." def __init__(self, formfield, data, error_list): self.formfield, self.data, self.error_list = formfield, data, error_list self.field_name = self.formfield.field_name # for convenience in templates def __str__(self): "Renders the field" return unicode(self).encode('utf-8') def __unicode__(self): "Renders the field" return force_unicode(self.formfield.render(self.data)) def __repr__(self): return '' % self.formfield.field_name def field_list(self): """ Like __str__(), but returns a list. Use this when the field's render() method returns a list. """ return self.formfield.render(self.data) def errors(self): return self.error_list def html_error_list(self): if self.errors(): return mark_safe('' % '
  • '.join([escape(e) for e in self.errors()])) else: return mark_safe('') def get_id(self): return self.formfield.get_id() class FormFieldCollection(FormFieldWrapper): "A utility class that gives the template access to a dict of FormFieldWrappers" def __init__(self, formfield_dict): self.formfield_dict = formfield_dict def __str__(self): return unicode(self).encode('utf-8') def __unicode__(self): return unicode(self.formfield_dict) def __getitem__(self, template_key): "Look up field by template key; raise KeyError on failure" return self.formfield_dict[template_key] def __repr__(self): return "" % self.formfield_dict def errors(self): "Returns list of all errors in this collection's formfields" errors = [] for field in self.formfield_dict.values(): if hasattr(field, 'errors'): errors.extend(field.errors()) return errors def has_errors(self): return bool(len(self.errors())) def html_combined_error_list(self): return mark_safe(''.join([field.html_error_list() for field in self.formfield_dict.values() if hasattr(field, 'errors')])) class InlineObjectCollection(object): "An object that acts like a sparse list of form field collections." def __init__(self, parent_manipulator, rel_obj, data, errors): self.parent_manipulator = parent_manipulator self.rel_obj = rel_obj self.data = data self.errors = errors self._collections = None self.name = rel_obj.name # This is the name used prior to fixing #1839. Needs for backwards # compatibility. self.orig_name = rel_obj.opts.module_name def __len__(self): self.fill() return self._collections.__len__() def __getitem__(self, k): self.fill() return self._collections.__getitem__(k) def __setitem__(self, k, v): self.fill() return self._collections.__setitem__(k,v) def __delitem__(self, k): self.fill() return self._collections.__delitem__(k) def __iter__(self): self.fill() return iter(self._collections.values()) def items(self): self.fill() return self._collections.items() def fill(self): if self._collections: return else: var_name = self.rel_obj.opts.object_name.lower() collections = {} orig = None if hasattr(self.parent_manipulator, 'original_object'): orig = self.parent_manipulator.original_object orig_list = self.rel_obj.get_list(orig) for i, instance in enumerate(orig_list): collection = {'original': instance} for f in self.rel_obj.editable_fields(): for field_name in f.get_manipulator_field_names(''): full_field_name = '%s.%d.%s' % (var_name, i, field_name) field = self.parent_manipulator[full_field_name] data = field.extract_data(self.data) errors = self.errors.get(full_field_name, []) collection[field_name] = FormFieldWrapper(field, data, errors) collections[i] = FormFieldCollection(collection) self._collections = collections class FormField(object): """Abstract class representing a form field. Classes that extend FormField should define the following attributes: field_name The field's name for use by programs. validator_list A list of validation tests (callback functions) that the data for this field must pass in order to be added or changed. is_required A Boolean. Is it a required field? Subclasses should also implement a render(data) method, which is responsible for rending the form field in XHTML. """ def __str__(self): return unicode(self).encode('utf-8') def __unicode__(self): return self.render(u'') def __repr__(self): return 'FormField "%s"' % self.field_name def prepare(self, new_data): "Hook for doing something to new_data (in place) before validation." pass def html2python(data): "Hook for converting an HTML datatype (e.g. 'on' for checkboxes) to a Python type" return data html2python = staticmethod(html2python) def render(self, data): raise NotImplementedError def get_member_name(self): if hasattr(self, 'member_name'): return self.member_name else: return self.field_name def extract_data(self, data_dict): if hasattr(self, 'requires_data_list') and hasattr(data_dict, 'getlist'): data = data_dict.getlist(self.get_member_name()) else: data = data_dict.get(self.get_member_name(), None) if data is None: data = '' return data def convert_post_data(self, new_data): name = self.get_member_name() if self.field_name in new_data: d = new_data.getlist(self.field_name) try: converted_data = [self.__class__.html2python(data) for data in d] except ValueError: converted_data = d new_data.setlist(name, converted_data) else: try: #individual fields deal with None values themselves new_data.setlist(name, [self.__class__.html2python(None)]) except EmptyValue: new_data.setlist(name, []) def run_validator(self, new_data, validator): if self.is_required or new_data.get(self.field_name, False) or hasattr(validator, 'always_test'): if hasattr(self, 'requires_data_list'): validator(new_data.getlist(self.field_name), new_data) else: validator(new_data.get(self.field_name, ''), new_data) def get_validation_errors(self, new_data): errors = {} if self.is_required and not new_data.get(self.field_name, False): errors.setdefault(self.field_name, []).append(ugettext('This field is required.')) return errors try: for validator in self.validator_list: try: self.run_validator(new_data, validator) except validators.ValidationError, e: errors.setdefault(self.field_name, []).extend(e.messages) # If a CriticalValidationError is raised, ignore any other ValidationErrors # for this particular field except validators.CriticalValidationError, e: errors.setdefault(self.field_name, []).extend(e.messages) return errors def get_id(self): "Returns the HTML 'id' attribute for this form field." return FORM_FIELD_ID_PREFIX + self.field_name #################### # GENERIC WIDGETS # #################### class TextField(FormField): input_type = "text" def __init__(self, field_name, length=30, max_length=None, is_required=False, validator_list=None, member_name=None): if validator_list is None: validator_list = [] self.field_name = field_name self.length, self.max_length = length, max_length self.is_required = is_required self.validator_list = [self.isValidLength, self.hasNoNewlines] + validator_list if member_name != None: self.member_name = member_name def isValidLength(self, data, form): if data and self.max_length and len(smart_unicode(data)) > self.max_length: raise validators.ValidationError, ungettext("Ensure your text is less than %s character.", "Ensure your text is less than %s characters.", self.max_length) % self.max_length def hasNoNewlines(self, data, form): if data and '\n' in data: raise validators.ValidationError, ugettext("Line breaks are not allowed here.") def render(self, data): if data is None: data = u'' max_length = u'' if self.max_length: max_length = u'maxlength="%s" ' % self.max_length return mark_safe(u'' % \ (self.input_type, self.get_id(), self.__class__.__name__, self.is_required and u' required' or '', self.field_name, self.length, escape(data), max_length)) def html2python(data): return data html2python = staticmethod(html2python) class PasswordField(TextField): input_type = "password" class LargeTextField(TextField): def __init__(self, field_name, rows=10, cols=40, is_required=False, validator_list=None, max_length=None): if validator_list is None: validator_list = [] self.field_name = field_name self.rows, self.cols, self.is_required = rows, cols, is_required self.validator_list = validator_list[:] if max_length: self.validator_list.append(self.isValidLength) self.max_length = max_length def render(self, data): if data is None: data = '' return mark_safe(u'' % \ (self.get_id(), self.__class__.__name__, self.is_required and u' required' or u'', self.field_name, self.rows, self.cols, escape(data))) class HiddenField(FormField): def __init__(self, field_name, is_required=False, validator_list=None, max_length=None): if validator_list is None: validator_list = [] self.field_name, self.is_required = field_name, is_required self.validator_list = validator_list[:] def render(self, data): return mark_safe(u'' % \ (self.get_id(), self.field_name, escape(data))) class CheckboxField(FormField): def __init__(self, field_name, checked_by_default=False, validator_list=None, is_required=False): if validator_list is None: validator_list = [] self.field_name = field_name self.checked_by_default = checked_by_default self.is_required = is_required self.validator_list = validator_list[:] def render(self, data): checked_html = '' if data or (data is '' and self.checked_by_default): checked_html = ' checked="checked"' return mark_safe(u'' % \ (self.get_id(), self.__class__.__name__, self.field_name, checked_html)) def html2python(data): "Convert value from browser ('on' or '') to a Python boolean" if data == 'on': return True return False html2python = staticmethod(html2python) class SelectField(FormField): def __init__(self, field_name, choices=None, size=1, is_required=False, validator_list=None, member_name=None): if validator_list is None: validator_list = [] if choices is None: choices = [] choices = [(k, smart_unicode(v, strings_only=True)) for k, v in choices] self.field_name = field_name # choices is a list of (value, human-readable key) tuples because order matters self.choices, self.size, self.is_required = choices, size, is_required self.validator_list = [self.isValidChoice] + validator_list if member_name != None: self.member_name = member_name def render(self, data): output = [u'') return mark_safe(u'\n'.join(output)) def isValidChoice(self, data, form): str_data = smart_unicode(data) str_choices = [smart_unicode(item[0]) for item in self.choices] if str_data not in str_choices: raise validators.ValidationError, ugettext("Select a valid choice; '%(data)s' is not in %(choices)s.") % {'data': str_data, 'choices': str_choices} class NullSelectField(SelectField): "This SelectField converts blank fields to None" def html2python(data): if not data: return None return data html2python = staticmethod(html2python) class RadioSelectField(FormField): def __init__(self, field_name, choices=None, ul_class='', is_required=False, validator_list=None, member_name=None): if validator_list is None: validator_list = [] if choices is None: choices = [] choices = [(k, smart_unicode(v)) for k, v in choices] self.field_name = field_name # choices is a list of (value, human-readable key) tuples because order matters self.choices, self.is_required = choices, is_required self.validator_list = [self.isValidChoice] + validator_list self.ul_class = ul_class if member_name != None: self.member_name = member_name def render(self, data): """ Returns a special object, RadioFieldRenderer, that is iterable *and* has a default unicode() rendered output. This allows for flexible use in templates. You can just use the default rendering: {{ field_name }} ...which will output the radio buttons in an unordered list. Or, you can manually traverse each radio option for special layout: {% for option in field_name.field_list %} {{ option.field }} {{ option.label }}
    {% endfor %} """ class RadioFieldRenderer: def __init__(self, datalist, ul_class): self.datalist, self.ul_class = datalist, ul_class def __unicode__(self): "Default unicode() output for this radio field -- a
      " output = [u'' % (self.ul_class and u' class="%s"' % self.ul_class or u'')] output.extend([u'
    • %s %s
    • ' % (d['field'], d['label']) for d in self.datalist]) output.append(u'
    ') return mark_safe(u''.join(output)) def __iter__(self): for d in self.datalist: yield d def __len__(self): return len(self.datalist) datalist = [] str_data = smart_unicode(data) # normalize to string for i, (value, display_name) in enumerate(self.choices): selected_html = '' if smart_unicode(value) == str_data: selected_html = u' checked="checked"' datalist.append({ 'value': value, 'name': display_name, 'field': mark_safe(u'' % \ (self.get_id() + u'_' + unicode(i), self.field_name, value, selected_html)), 'label': mark_safe(u'' % \ (self.get_id() + u'_' + unicode(i), display_name), )}) return RadioFieldRenderer(datalist, self.ul_class) def isValidChoice(self, data, form): str_data = smart_unicode(data) str_choices = [smart_unicode(item[0]) for item in self.choices] if str_data not in str_choices: raise validators.ValidationError, ugettext("Select a valid choice; '%(data)s' is not in %(choices)s.") % {'data':str_data, 'choices':str_choices} class NullBooleanField(SelectField): "This SelectField provides 'Yes', 'No' and 'Unknown', mapping results to True, False or None" def __init__(self, field_name, is_required=False, validator_list=None): if validator_list is None: validator_list = [] SelectField.__init__(self, field_name, choices=[('1', ugettext('Unknown')), ('2', ugettext('Yes')), ('3', ugettext('No'))], is_required=is_required, validator_list=validator_list) def render(self, data): if data is None: data = '1' elif data == True: data = '2' elif data == False: data = '3' return SelectField.render(self, data) def html2python(data): return {None: None, '1': None, '2': True, '3': False}[data] html2python = staticmethod(html2python) class SelectMultipleField(SelectField): requires_data_list = True def render(self, data): output = [u'') return mark_safe(u'\n'.join(output)) def isValidChoice(self, field_data, all_data): # data is something like ['1', '2', '3'] str_choices = [smart_unicode(item[0]) for item in self.choices] for val in map(smart_unicode, field_data): if val not in str_choices: raise validators.ValidationError, ugettext("Select a valid choice; '%(data)s' is not in %(choices)s.") % {'data':val, 'choices':str_choices} def html2python(data): if data is None: raise EmptyValue return data html2python = staticmethod(html2python) class CheckboxSelectMultipleField(SelectMultipleField): """ This has an identical interface to SelectMultipleField, except the rendered widget is different. Instead of a es. Of course, that results in multiple form elements for the same "single" field, so this class's prepare() method flattens the split data elements back into the single list that validators, renderers and save() expect. """ requires_data_list = True def __init__(self, field_name, choices=None, ul_class='', validator_list=None): if validator_list is None: validator_list = [] if choices is None: choices = [] self.ul_class = ul_class SelectMultipleField.__init__(self, field_name, choices, size=1, is_required=False, validator_list=validator_list) def prepare(self, new_data): # new_data has "split" this field into several fields, so flatten it # back into a single list. data_list = [] for value, readable_value in self.choices: if new_data.get('%s%s' % (self.field_name, value), '') == 'on': data_list.append(value) new_data.setlist(self.field_name, data_list) def render(self, data): output = [u'' % (self.ul_class and u' class="%s"' % self.ul_class or u'')] str_data_list = map(smart_unicode, data) # normalize to strings for value, choice in self.choices: checked_html = u'' if smart_unicode(value) in str_data_list: checked_html = u' checked="checked"' field_name = u'%s%s' % (self.field_name, value) output.append(u'
  • ' % \ (self.get_id() + escape(value), self.__class__.__name__, field_name, checked_html, self.get_id() + escape(value), choice)) output.append(u'') return mark_safe(u'\n'.join(output)) #################### # FILE UPLOADS # #################### class FileUploadField(FormField): def __init__(self, field_name, is_required=False, validator_list=None, max_length=None): if validator_list is None: validator_list = [] self.field_name, self.is_required = field_name, is_required self.validator_list = [self.isNonEmptyFile] + validator_list def isNonEmptyFile(self, new_data, all_data): if hasattr(new_data, 'upload_errors'): upload_errors = new_data.upload_errors() if upload_errors: raise validators.CriticalValidationError, upload_errors try: file_size = new_data.size except AttributeError: file_size = len(new_data['content']) if not file_size: raise validators.CriticalValidationError, ugettext("The submitted file is empty.") def render(self, data): return mark_safe(u'' % \ (self.get_id(), self.__class__.__name__, self.field_name)) def prepare(self, new_data): if hasattr(new_data, 'upload_errors'): upload_errors = new_data.upload_errors() new_data[self.field_name] = { '_file_upload_error': upload_errors } def html2python(data): if data is None: raise EmptyValue return data html2python = staticmethod(html2python) class ImageUploadField(FileUploadField): "A FileUploadField that raises CriticalValidationError if the uploaded file isn't an image." def __init__(self, *args, **kwargs): FileUploadField.__init__(self, *args, **kwargs) self.validator_list.insert(0, self.isValidImage) def isValidImage(self, field_data, all_data): try: validators.isValidImage(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages #################### # INTEGERS/FLOATS # #################### class IntegerField(TextField): def __init__(self, field_name, length=10, max_length=None, is_required=False, validator_list=None, member_name=None): if validator_list is None: validator_list = [] validator_list = [self.isInteger] + validator_list if member_name is not None: self.member_name = member_name TextField.__init__(self, field_name, length, max_length, is_required, validator_list) def isInteger(self, field_data, all_data): try: validators.isInteger(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def html2python(data): if data == '' or data is None: return None return int(data) html2python = staticmethod(html2python) class SmallIntegerField(IntegerField): def __init__(self, field_name, length=5, max_length=5, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isSmallInteger] + validator_list IntegerField.__init__(self, field_name, length, max_length, is_required, validator_list) def isSmallInteger(self, field_data, all_data): if not -32768 <= int(field_data) <= 32767: raise validators.CriticalValidationError, ugettext("Enter a whole number between -32,768 and 32,767.") class PositiveIntegerField(IntegerField): def __init__(self, field_name, length=10, max_length=None, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isPositive] + validator_list IntegerField.__init__(self, field_name, length, max_length, is_required, validator_list) def isPositive(self, field_data, all_data): if int(field_data) < 0: raise validators.CriticalValidationError, ugettext("Enter a positive number.") class PositiveSmallIntegerField(IntegerField): def __init__(self, field_name, length=5, max_length=None, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isPositiveSmall] + validator_list IntegerField.__init__(self, field_name, length, max_length, is_required, validator_list) def isPositiveSmall(self, field_data, all_data): if not 0 <= int(field_data) <= 32767: raise validators.CriticalValidationError, ugettext("Enter a whole number between 0 and 32,767.") class FloatField(TextField): def __init__(self, field_name, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [validators.isValidFloat] + validator_list TextField.__init__(self, field_name, is_required=is_required, validator_list=validator_list) def html2python(data): if data == '' or data is None: return None return float(data) html2python = staticmethod(html2python) class DecimalField(TextField): def __init__(self, field_name, max_digits, decimal_places, is_required=False, validator_list=None): if validator_list is None: validator_list = [] self.max_digits, self.decimal_places = max_digits, decimal_places validator_list = [self.isValidDecimal] + validator_list # Initialise the TextField, making sure it's large enough to fit the number with a - sign and a decimal point. super(DecimalField, self).__init__(field_name, max_digits+2, max_digits+2, is_required, validator_list) def isValidDecimal(self, field_data, all_data): v = validators.IsValidDecimal(self.max_digits, self.decimal_places) try: v(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def html2python(data): if data == '' or data is None: return None try: import decimal except ImportError: from django.utils import _decimal as decimal try: return decimal.Decimal(data) except decimal.InvalidOperation, e: raise ValueError, e html2python = staticmethod(html2python) #################### # DATES AND TIMES # #################### class DatetimeField(TextField): """A FormField that automatically converts its data to a datetime.datetime object. The data should be in the format YYYY-MM-DD HH:MM:SS.""" def __init__(self, field_name, length=30, max_length=None, is_required=False, validator_list=None): if validator_list is None: validator_list = [] self.field_name = field_name self.length, self.max_length = length, max_length self.is_required = is_required self.validator_list = [validators.isValidANSIDatetime] + validator_list def html2python(data): "Converts the field into a datetime.datetime object" import datetime try: date, time = data.split() y, m, d = date.split('-') timebits = time.split(':') h, mn = timebits[:2] if len(timebits) > 2: s = int(timebits[2]) else: s = 0 return datetime.datetime(int(y), int(m), int(d), int(h), int(mn), s) except ValueError: return None html2python = staticmethod(html2python) class DateField(TextField): """A FormField that automatically converts its data to a datetime.date object. The data should be in the format YYYY-MM-DD.""" def __init__(self, field_name, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidDate] + validator_list TextField.__init__(self, field_name, length=10, max_length=10, is_required=is_required, validator_list=validator_list) def isValidDate(self, field_data, all_data): try: validators.isValidANSIDate(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def html2python(data): "Converts the field into a datetime.date object" import time, datetime try: time_tuple = time.strptime(data, '%Y-%m-%d') return datetime.date(*time_tuple[0:3]) except (ValueError, TypeError): return None html2python = staticmethod(html2python) class TimeField(TextField): """A FormField that automatically converts its data to a datetime.time object. The data should be in the format HH:MM:SS or HH:MM:SS.mmmmmm.""" def __init__(self, field_name, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidTime] + validator_list TextField.__init__(self, field_name, length=8, max_length=8, is_required=is_required, validator_list=validator_list) def isValidTime(self, field_data, all_data): try: validators.isValidANSITime(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def html2python(data): "Converts the field into a datetime.time object" import time, datetime try: part_list = data.split('.') try: time_tuple = time.strptime(part_list[0], '%H:%M:%S') except ValueError: # seconds weren't provided time_tuple = time.strptime(part_list[0], '%H:%M') t = datetime.time(*time_tuple[3:6]) if (len(part_list) == 2): t = t.replace(microsecond=int(part_list[1])) return t except (ValueError, TypeError, AttributeError): return None html2python = staticmethod(html2python) #################### # INTERNET-RELATED # #################### class EmailField(TextField): "A convenience FormField for validating e-mail addresses" def __init__(self, field_name, length=50, max_length=75, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidEmail] + validator_list TextField.__init__(self, field_name, length, max_length=max_length, is_required=is_required, validator_list=validator_list) def isValidEmail(self, field_data, all_data): try: validators.isValidEmail(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages class URLField(TextField): "A convenience FormField for validating URLs" def __init__(self, field_name, length=50, max_length=200, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidURL] + validator_list TextField.__init__(self, field_name, length=length, max_length=max_length, is_required=is_required, validator_list=validator_list) def isValidURL(self, field_data, all_data): try: validators.isValidURL(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages class IPAddressField(TextField): def __init__(self, field_name, length=15, max_length=15, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidIPAddress] + validator_list TextField.__init__(self, field_name, length=length, max_length=max_length, is_required=is_required, validator_list=validator_list) def isValidIPAddress(self, field_data, all_data): try: validators.isValidIPAddress4(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def html2python(data): return data or None html2python = staticmethod(html2python) #################### # MISCELLANEOUS # #################### class FilePathField(SelectField): "A SelectField whose choices are the files in a given directory." def __init__(self, field_name, path, match=None, recursive=False, is_required=False, validator_list=None, max_length=None): import os from django.db.models import BLANK_CHOICE_DASH if match is not None: import re match_re = re.compile(match) choices = not is_required and BLANK_CHOICE_DASH[:] or [] if recursive: for root, dirs, files in os.walk(path): for f in files: if match is None or match_re.search(f): f = os.path.join(root, f) choices.append((f, f.replace(path, "", 1))) else: try: for f in os.listdir(path): full_file = os.path.join(path, f) if os.path.isfile(full_file) and (match is None or match_re.search(f)): choices.append((full_file, f)) except OSError: pass SelectField.__init__(self, field_name, choices, 1, is_required, validator_list) class PhoneNumberField(TextField): "A convenience FormField for validating phone numbers (e.g. '630-555-1234')" def __init__(self, field_name, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidPhone] + validator_list TextField.__init__(self, field_name, length=12, max_length=12, is_required=is_required, validator_list=validator_list) def isValidPhone(self, field_data, all_data): try: validators.isValidPhone(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages class USStateField(TextField): "A convenience FormField for validating U.S. states (e.g. 'IL')" def __init__(self, field_name, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isValidUSState] + validator_list TextField.__init__(self, field_name, length=2, max_length=2, is_required=is_required, validator_list=validator_list) def isValidUSState(self, field_data, all_data): try: validators.isValidUSState(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def html2python(data): if data: return data.upper() # Should always be stored in upper case return data html2python = staticmethod(html2python) class CommaSeparatedIntegerField(TextField): "A convenience FormField for validating comma-separated integer fields" def __init__(self, field_name, max_length=None, is_required=False, validator_list=None): if validator_list is None: validator_list = [] validator_list = [self.isCommaSeparatedIntegerList] + validator_list TextField.__init__(self, field_name, length=20, max_length=max_length, is_required=is_required, validator_list=validator_list) def isCommaSeparatedIntegerList(self, field_data, all_data): try: validators.isCommaSeparatedIntegerList(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages def render(self, data): if data is None: data = u'' elif isinstance(data, (list, tuple)): data = u','.join(data) return super(CommaSeparatedIntegerField, self).render(data) class RawIdAdminField(CommaSeparatedIntegerField): def html2python(data): if data: return data.split(',') else: return [] html2python = staticmethod(html2python) class XMLLargeTextField(LargeTextField): """ A LargeTextField with an XML validator. The schema_path argument is the full path to a Relax NG compact schema to validate against. """ def __init__(self, field_name, schema_path, **kwargs): self.schema_path = schema_path kwargs.setdefault('validator_list', []).insert(0, self.isValidXML) LargeTextField.__init__(self, field_name, **kwargs) def isValidXML(self, field_data, all_data): v = validators.RelaxNGCompact(self.schema_path) try: v(field_data, all_data) except validators.ValidationError, e: raise validators.CriticalValidationError, e.messages