django1/django/contrib/admin/widgets.py

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"""
Form Widget classes specific to the Django admin site.
"""
import django.utils.copycompat as copy
from django import forms
from django.forms.widgets import RadioFieldRenderer
from django.forms.util import flatatt
from django.utils.html import escape
from django.utils.text import truncate_words
from django.utils.translation import ugettext as _
from django.utils.safestring import mark_safe
from django.utils.encoding import force_unicode
from django.conf import settings
from django.core.urlresolvers import reverse, NoReverseMatch
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
"""
class Media:
js = (settings.ADMIN_MEDIA_PREFIX + "js/core.js",
settings.ADMIN_MEDIA_PREFIX + "js/SelectBox.js",
settings.ADMIN_MEDIA_PREFIX + "js/SelectFilter2.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(u'<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(u'SelectFilter.init("id_%s", "%s", %s, "%s"); });</script>\n' % \
(name, self.verbose_name.replace('"', '\\"'), int(self.is_stacked), settings.ADMIN_MEDIA_PREFIX))
return mark_safe(u''.join(output))
class AdminDateWidget(forms.DateInput):
class Media:
js = (settings.ADMIN_MEDIA_PREFIX + "js/calendar.js",
settings.ADMIN_MEDIA_PREFIX + "js/admin/DateTimeShortcuts.js")
def __init__(self, attrs={}, format=None):
super(AdminDateWidget, self).__init__(attrs={'class': 'vDateField', 'size': '10'}, format=format)
class AdminTimeWidget(forms.TimeInput):
class Media:
js = (settings.ADMIN_MEDIA_PREFIX + "js/calendar.js",
settings.ADMIN_MEDIA_PREFIX + "js/admin/DateTimeShortcuts.js")
def __init__(self, attrs={}, format=None):
super(AdminTimeWidget, self).__init__(attrs={'class': 'vTimeField', 'size': '8'}, 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 mark_safe(u'<p class="datetime">%s %s<br />%s %s</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 mark_safe(u'<ul%s>\n%s\n</ul>' % (
flatatt(self.attrs),
u'\n'.join([u'<li>%s</li>' % force_unicode(w) for w in self]))
)
class AdminRadioSelect(forms.RadioSelect):
renderer = AdminRadioFieldRenderer
class AdminFileWidget(forms.FileInput):
"""
A FileField Widget that shows its current value if it has one.
"""
def __init__(self, attrs={}):
super(AdminFileWidget, self).__init__(attrs)
def render(self, name, value, attrs=None):
output = []
if value and hasattr(value, "url"):
output.append('%s <a target="_blank" href="%s">%s</a> <br />%s ' % \
(_('Currently:'), value.url, value, _('Change:')))
output.append(super(AdminFileWidget, self).render(name, value, attrs))
return mark_safe(u''.join(output))
class ForeignKeyRawIdWidget(forms.TextInput):
"""
A Widget for displaying ForeignKeys in the "raw_id" interface rather than
in a <select> box.
"""
def __init__(self, rel, attrs=None, using=None):
self.rel = rel
self.db = using
super(ForeignKeyRawIdWidget, self).__init__(attrs)
def render(self, name, value, attrs=None):
if attrs is None:
attrs = {}
related_url = '../../../%s/%s/' % (self.rel.to._meta.app_label, self.rel.to._meta.object_name.lower())
params = self.url_parameters()
if params:
url = '?' + '&amp;'.join(['%s=%s' % (k, v) for k, v in params.items()])
else:
url = ''
if not attrs.has_key('class'):
attrs['class'] = 'vForeignKeyRawIdAdminField' # The JavaScript looks for this hook.
output = [super(ForeignKeyRawIdWidget, self).render(name, value, attrs)]
# TODO: "id_" is hard-coded here. This should instead use the correct
# API to determine the ID dynamically.
output.append('<a href="%s%s" class="related-lookup" id="lookup_id_%s" onclick="return showRelatedObjectLookupPopup(this);"> ' % \
(related_url, url, name))
output.append('<img src="%simg/admin/selector-search.gif" width="16" height="16" alt="%s" /></a>' % (settings.ADMIN_MEDIA_PREFIX, _('Lookup')))
if value:
output.append(self.label_for_value(value))
return mark_safe(u''.join(output))
def base_url_parameters(self):
params = {}
if self.rel.limit_choices_to and hasattr(self.rel.limit_choices_to, 'items'):
items = []
for k, v in self.rel.limit_choices_to.items():
if isinstance(v, list):
v = ','.join([str(x) for x in v])
else:
v = str(v)
items.append((k, v))
params.update(dict(items))
return params
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})
except self.rel.to.DoesNotExist:
return ''
return '&nbsp;<strong>%s</strong>' % escape(truncate_words(obj, 14))
class ManyToManyRawIdWidget(ForeignKeyRawIdWidget):
"""
A Widget for displaying ManyToMany ids in the "raw_id" interface rather than
in a <select multiple> box.
"""
def __init__(self, rel, attrs=None, using=None):
super(ManyToManyRawIdWidget, self).__init__(rel, attrs, using=None)
def render(self, name, value, attrs=None):
attrs['class'] = 'vManyToManyRawIdAdminField'
if value:
value = ','.join([str(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, None)
if value and ',' in value:
return data[name].split(',')
if value:
return [value]
return None
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_unicode(pk1) != force_unicode(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 self.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
def _media(self):
return self.widget.media
media = property(_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())
try:
related_url = reverse('admin:%s_%s_add' % info, current_app=self.admin_site.name)
except NoReverseMatch:
info = (self.admin_site.root_path, rel_to._meta.app_label, rel_to._meta.object_name.lower())
related_url = '%s%s/%s/add/' % info
self.widget.choices = self.choices
output = [self.widget.render(name, value, *args, **kwargs)]
if self.can_add_related:
# TODO: "id_" is hard-coded here. This should instead use the correct
# API to determine the ID dynamically.
output.append(u'<a href="%s" class="add-another" id="add_id_%s" onclick="return showAddAnotherPopup(this);"> ' % \
(related_url, name))
output.append(u'<img src="%simg/admin/icon_addlink.gif" width="10" height="10" alt="%s"/></a>' % (settings.ADMIN_MEDIA_PREFIX, _('Add Another')))
return mark_safe(u''.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):
def __init__(self, attrs=None):
final_attrs = {'class': 'vIntegerField'}
if attrs is not None:
final_attrs.update(attrs)
super(AdminIntegerFieldWidget, self).__init__(attrs=final_attrs)
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)