django1/django/contrib/admin/widgets.py

327 lines
13 KiB
Python

"""
Form Widget classes specific to the Django admin site.
"""
from __future__ import unicode_literals
import copy
from django import forms
from django.contrib.admin.templatetags.admin_static import static
from django.core.urlresolvers import reverse
from django.forms.widgets import RadioFieldRenderer
from django.forms.util import flatatt
from django.utils.html import escape, format_html, format_html_join
from django.utils.text import Truncator
from django.utils.translation import ugettext as _
from django.utils.safestring import mark_safe
from django.utils.encoding import force_text
from django.utils import six
class FilteredSelectMultiple(forms.SelectMultiple):
"""
A SelectMultiple with a JavaScript filter interface.
Note that the resulting JavaScript assumes that the jsi18n
catalog has been loaded in the page
"""
@property
def media(self):
js = ["core.js", "SelectBox.js", "SelectFilter2.js"]
return forms.Media(js=[static("admin/js/%s" % path) for path in js])
def __init__(self, verbose_name, is_stacked, attrs=None, choices=()):
self.verbose_name = verbose_name
self.is_stacked = is_stacked
super(FilteredSelectMultiple, self).__init__(attrs, choices)
def render(self, name, value, attrs=None, choices=()):
if attrs is None:
attrs = {}
attrs['class'] = 'selectfilter'
if self.is_stacked:
attrs['class'] += 'stacked'
output = [super(FilteredSelectMultiple, self).render(name, value, attrs, choices)]
output.append('<script type="text/javascript">addEvent(window, "load", function(e) {')
# TODO: "id_" is hard-coded here. This should instead use the correct
# API to determine the ID dynamically.
output.append('SelectFilter.init("id_%s", "%s", %s, "%s"); });</script>\n'
% (name, self.verbose_name.replace('"', '\\"'), int(self.is_stacked), static('admin/')))
return mark_safe(''.join(output))
class AdminDateWidget(forms.DateInput):
@property
def media(self):
js = ["calendar.js", "admin/DateTimeShortcuts.js"]
return forms.Media(js=[static("admin/js/%s" % path) for path in js])
def __init__(self, attrs=None, format=None):
final_attrs = {'class': 'vDateField', 'size': '10'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminDateWidget, self).__init__(attrs=final_attrs, format=format)
class AdminTimeWidget(forms.TimeInput):
@property
def media(self):
js = ["calendar.js", "admin/DateTimeShortcuts.js"]
return forms.Media(js=[static("admin/js/%s" % path) for path in js])
def __init__(self, attrs=None, format=None):
final_attrs = {'class': 'vTimeField', 'size': '8'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminTimeWidget, self).__init__(attrs=final_attrs, format=format)
class AdminSplitDateTime(forms.SplitDateTimeWidget):
"""
A SplitDateTime Widget that has some admin-specific styling.
"""
def __init__(self, attrs=None):
widgets = [AdminDateWidget, AdminTimeWidget]
# Note that we're calling MultiWidget, not SplitDateTimeWidget, because
# we want to define widgets.
forms.MultiWidget.__init__(self, widgets, attrs)
def format_output(self, rendered_widgets):
return format_html('<p class="datetime">{0} {1}<br />{2} {3}</p>',
_('Date:'), rendered_widgets[0],
_('Time:'), rendered_widgets[1])
class AdminRadioFieldRenderer(RadioFieldRenderer):
def render(self):
"""Outputs a <ul> for this set of radio fields."""
return format_html('<ul{0}>\n{1}\n</ul>',
flatatt(self.attrs),
format_html_join('\n', '<li>{0}</li>',
((force_text(w),) for w in self)))
class AdminRadioSelect(forms.RadioSelect):
renderer = AdminRadioFieldRenderer
class AdminFileWidget(forms.ClearableFileInput):
template_with_initial = ('<p class="file-upload">%s</p>'
% forms.ClearableFileInput.template_with_initial)
template_with_clear = ('<span class="clearable-file-input">%s</span>'
% forms.ClearableFileInput.template_with_clear)
def url_params_from_lookup_dict(lookups):
"""
Converts the type of lookups specified in a ForeignKey limit_choices_to
attribute to a dictionary of query parameters
"""
params = {}
if lookups and hasattr(lookups, 'items'):
items = []
for k, v in lookups.items():
if isinstance(v, (tuple, list)):
v = ','.join([str(x) for x in v])
elif isinstance(v, bool):
# See django.db.fields.BooleanField.get_prep_lookup
v = ('0', '1')[v]
else:
v = six.text_type(v)
items.append((k, v))
params.update(dict(items))
return params
class ForeignKeyRawIdWidget(forms.TextInput):
"""
A Widget for displaying ForeignKeys in the "raw_id" interface rather than
in a <select> box.
"""
def __init__(self, rel, admin_site, attrs=None, using=None):
self.rel = rel
self.admin_site = admin_site
self.db = using
super(ForeignKeyRawIdWidget, self).__init__(attrs)
def render(self, name, value, attrs=None):
rel_to = self.rel.to
if attrs is None:
attrs = {}
extra = []
if rel_to in self.admin_site._registry:
# The related object is registered with the same AdminSite
related_url = reverse('admin:%s_%s_changelist' %
(rel_to._meta.app_label,
rel_to._meta.module_name),
current_app=self.admin_site.name)
params = self.url_parameters()
if params:
url = '?' + '&amp;'.join(['%s=%s' % (k, v) for k, v in params.items()])
else:
url = ''
if "class" not in attrs:
attrs['class'] = 'vForeignKeyRawIdAdminField' # The JavaScript code looks for this hook.
# TODO: "lookup_id_" is hard-coded here. This should instead use
# the correct API to determine the ID dynamically.
extra.append('<a href="%s%s" class="related-lookup" id="lookup_id_%s" onclick="return showRelatedObjectLookupPopup(this);"> '
% (related_url, url, name))
extra.append('<img src="%s" width="16" height="16" alt="%s" /></a>'
% (static('admin/img/selector-search.gif'), _('Lookup')))
output = [super(ForeignKeyRawIdWidget, self).render(name, value, attrs)] + extra
if value:
output.append(self.label_for_value(value))
return mark_safe(''.join(output))
def base_url_parameters(self):
return url_params_from_lookup_dict(self.rel.limit_choices_to)
def url_parameters(self):
from django.contrib.admin.views.main import TO_FIELD_VAR
params = self.base_url_parameters()
params.update({TO_FIELD_VAR: self.rel.get_related_field().name})
return params
def label_for_value(self, value):
key = self.rel.get_related_field().name
try:
obj = self.rel.to._default_manager.using(self.db).get(**{key: value})
return '&nbsp;<strong>%s</strong>' % escape(Truncator(obj).words(14, truncate='...'))
except (ValueError, self.rel.to.DoesNotExist):
return ''
class ManyToManyRawIdWidget(ForeignKeyRawIdWidget):
"""
A Widget for displaying ManyToMany ids in the "raw_id" interface rather than
in a <select multiple> box.
"""
def render(self, name, value, attrs=None):
if attrs is None:
attrs = {}
if self.rel.to in self.admin_site._registry:
# The related object is registered with the same AdminSite
attrs['class'] = 'vManyToManyRawIdAdminField'
if value:
value = ','.join([force_text(v) for v in value])
else:
value = ''
return super(ManyToManyRawIdWidget, self).render(name, value, attrs)
def url_parameters(self):
return self.base_url_parameters()
def label_for_value(self, value):
return ''
def value_from_datadict(self, data, files, name):
value = data.get(name)
if value:
return value.split(',')
def _has_changed(self, initial, data):
if initial is None:
initial = []
if data is None:
data = []
if len(initial) != len(data):
return True
for pk1, pk2 in zip(initial, data):
if force_text(pk1) != force_text(pk2):
return True
return False
class RelatedFieldWidgetWrapper(forms.Widget):
"""
This class is a wrapper to a given widget to add the add icon for the
admin interface.
"""
def __init__(self, widget, rel, admin_site, can_add_related=None):
self.is_hidden = widget.is_hidden
self.needs_multipart_form = widget.needs_multipart_form
self.attrs = widget.attrs
self.choices = widget.choices
self.widget = widget
self.rel = rel
# Backwards compatible check for whether a user can add related
# objects.
if can_add_related is None:
can_add_related = rel.to in admin_site._registry
self.can_add_related = can_add_related
# so we can check if the related object is registered with this AdminSite
self.admin_site = admin_site
def __deepcopy__(self, memo):
obj = copy.copy(self)
obj.widget = copy.deepcopy(self.widget, memo)
obj.attrs = self.widget.attrs
memo[id(self)] = obj
return obj
@property
def media(self):
return self.widget.media
def render(self, name, value, *args, **kwargs):
rel_to = self.rel.to
info = (rel_to._meta.app_label, rel_to._meta.object_name.lower())
self.widget.choices = self.choices
output = [self.widget.render(name, value, *args, **kwargs)]
if self.can_add_related:
related_url = reverse('admin:%s_%s_add' % info, current_app=self.admin_site.name)
# TODO: "add_id_" is hard-coded here. This should instead use the
# correct API to determine the ID dynamically.
output.append('<a href="%s" class="add-another" id="add_id_%s" onclick="return showAddAnotherPopup(this);"> '
% (related_url, name))
output.append('<img src="%s" width="10" height="10" alt="%s"/></a>'
% (static('admin/img/icon_addlink.gif'), _('Add Another')))
return mark_safe(''.join(output))
def build_attrs(self, extra_attrs=None, **kwargs):
"Helper function for building an attribute dictionary."
self.attrs = self.widget.build_attrs(extra_attrs=None, **kwargs)
return self.attrs
def value_from_datadict(self, data, files, name):
return self.widget.value_from_datadict(data, files, name)
def _has_changed(self, initial, data):
return self.widget._has_changed(initial, data)
def id_for_label(self, id_):
return self.widget.id_for_label(id_)
class AdminTextareaWidget(forms.Textarea):
def __init__(self, attrs=None):
final_attrs = {'class': 'vLargeTextField'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminTextareaWidget, self).__init__(attrs=final_attrs)
class AdminTextInputWidget(forms.TextInput):
def __init__(self, attrs=None):
final_attrs = {'class': 'vTextField'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminTextInputWidget, self).__init__(attrs=final_attrs)
class AdminURLFieldWidget(forms.TextInput):
def __init__(self, attrs=None):
final_attrs = {'class': 'vURLField'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminURLFieldWidget, self).__init__(attrs=final_attrs)
class AdminIntegerFieldWidget(forms.TextInput):
class_name = 'vIntegerField'
def __init__(self, attrs=None):
final_attrs = {'class': self.class_name}
if attrs is not None:
final_attrs.update(attrs)
super(AdminIntegerFieldWidget, self).__init__(attrs=final_attrs)
class AdminBigIntegerFieldWidget(AdminIntegerFieldWidget):
class_name = 'vBigIntegerField'
class AdminCommaSeparatedIntegerFieldWidget(forms.TextInput):
def __init__(self, attrs=None):
final_attrs = {'class': 'vCommaSeparatedIntegerField'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminCommaSeparatedIntegerFieldWidget, self).__init__(attrs=final_attrs)