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from django import forms
from django.conf import settings
from django.utils.html import escape
from django.utils.safestring import mark_safe
from django.utils.encoding import force_unicode
from django.contrib.admin.util import flatten_fieldsets
from django.contrib.contenttypes.models import ContentType
from django.utils.translation import ugettext_lazy as _
ACTION_CHECKBOX_NAME = '_selected_action'
class ActionForm(forms.Form):
action = forms.ChoiceField(label=_('Action:'))
checkbox = forms.CheckboxInput({'class': 'action-select'}, lambda value: False)
class AdminForm(object):
def __init__(self, form, fieldsets, prepopulated_fields):
self.form, self.fieldsets = form, normalize_fieldsets(fieldsets)
self.prepopulated_fields = [{
'field': form[field_name],
'dependencies': [form[f] for f in dependencies]
} for field_name, dependencies in prepopulated_fields.items()]
def __iter__(self):
for name, options in self.fieldsets:
yield Fieldset(self.form, name, **options)
def first_field(self):
try:
fieldset_name, fieldset_options = self.fieldsets[0]
field_name = fieldset_options['fields'][0]
if not isinstance(field_name, basestring):
field_name = field_name[0]
return self.form[field_name]
except (KeyError, IndexError):
pass
try:
return iter(self.form).next()
except StopIteration:
return None
def _media(self):
media = self.form.media
for fs in self:
media = media + fs.media
return media
media = property(_media)
class Fieldset(object):
def __init__(self, form, name=None, fields=(), classes=(), description=None):
self.form = form
self.name, self.fields = name, fields
self.classes = u' '.join(classes)
self.description = description
def _media(self):
if 'collapse' in self.classes:
return forms.Media(js=['%sjs/admin/CollapsedFieldsets.js' % settings.ADMIN_MEDIA_PREFIX])
return forms.Media()
media = property(_media)
def __iter__(self):
for field in self.fields:
yield Fieldline(self.form, field)
class Fieldline(object):
def __init__(self, form, field):
self.form = form # A django.forms.Form instance
if isinstance(field, basestring):
self.fields = [field]
else:
self.fields = field
def __iter__(self):
for i, field in enumerate(self.fields):
yield AdminField(self.form, field, is_first=(i == 0))
def errors(self):
return mark_safe(u'\n'.join([self.form[f].errors.as_ul() for f in self.fields]).strip('\n'))
class AdminField(object):
def __init__(self, form, field, is_first):
self.field = form[field] # A django.forms.BoundField instance
self.is_first = is_first # Whether this field is first on the line
self.is_checkbox = isinstance(self.field.field.widget, forms.CheckboxInput)
def label_tag(self):
classes = []
if self.is_checkbox:
classes.append(u'vCheckboxLabel')
contents = force_unicode(escape(self.field.label))
else:
contents = force_unicode(escape(self.field.label)) + u':'
if self.field.field.required:
classes.append(u'required')
if not self.is_first:
classes.append(u'inline')
attrs = classes and {'class': u' '.join(classes)} or {}
return self.field.label_tag(contents=contents, attrs=attrs)
class InlineAdminFormSet(object):
"""
A wrapper around an inline formset for use in the admin system.
"""
def __init__(self, inline, formset, fieldsets):
self.opts = inline
self.formset = formset
self.fieldsets = fieldsets
def __iter__(self):
for form, original in zip(self.formset.initial_forms, self.formset.get_queryset()):
yield InlineAdminForm(self.formset, form, self.fieldsets, self.opts.prepopulated_fields, original)
for form in self.formset.extra_forms:
yield InlineAdminForm(self.formset, form, self.fieldsets, self.opts.prepopulated_fields, None)
def fields(self):
fk = getattr(self.formset, "fk", None)
for field_name in flatten_fieldsets(self.fieldsets):
if fk and fk.name == field_name:
continue
yield self.formset.form.base_fields[field_name]
def _media(self):
media = self.opts.media + self.formset.media
for fs in self:
media = media + fs.media
return media
media = property(_media)
class InlineAdminForm(AdminForm):
"""
A wrapper around an inline form for use in the admin system.
"""
def __init__(self, formset, form, fieldsets, prepopulated_fields, original):
self.formset = formset
self.original = original
if original is not None:
self.original_content_type_id = ContentType.objects.get_for_model(original).pk
self.show_url = original and hasattr(original, 'get_absolute_url')
super(InlineAdminForm, self).__init__(form, fieldsets, prepopulated_fields)
def __iter__(self):
for name, options in self.fieldsets:
yield InlineFieldset(self.formset, self.form, name, **options)
def has_auto_field(self):
if self.form._meta.model._meta.has_auto_field:
return True
# Also search any parents for an auto field.
for parent in self.form._meta.model._meta.get_parent_list():
if parent._meta.has_auto_field:
return True
return False
def field_count(self):
# tabular.html uses this function for colspan value.
num_of_fields = 0
if self.has_auto_field():
num_of_fields += 1
num_of_fields += len(self.fieldsets[0][1]["fields"])
if self.formset.can_order:
num_of_fields += 1
if self.formset.can_delete:
num_of_fields += 1
return num_of_fields
def pk_field(self):
return AdminField(self.form, self.formset._pk_field.name, False)
def fk_field(self):
fk = getattr(self.formset, "fk", None)
if fk:
return AdminField(self.form, fk.name, False)
else:
return ""
def deletion_field(self):
from django.forms.formsets import DELETION_FIELD_NAME
return AdminField(self.form, DELETION_FIELD_NAME, False)
def ordering_field(self):
from django.forms.formsets import ORDERING_FIELD_NAME
return AdminField(self.form, ORDERING_FIELD_NAME, False)
class InlineFieldset(Fieldset):
def __init__(self, formset, *args, **kwargs):
self.formset = formset
super(InlineFieldset, self).__init__(*args, **kwargs)
def __iter__(self):
fk = getattr(self.formset, "fk", None)
for field in self.fields:
if fk and fk.name == field:
continue
yield Fieldline(self.form, field)
class AdminErrorList(forms.util.ErrorList):
"""
Stores all errors for the form/formsets in an add/change stage view.
"""
def __init__(self, form, inline_formsets):
if form.is_bound:
self.extend(form.errors.values())
for inline_formset in inline_formsets:
self.extend(inline_formset.non_form_errors())
for errors_in_inline_form in inline_formset.errors:
self.extend(errors_in_inline_form.values())
def normalize_fieldsets(fieldsets):
"""
Make sure the keys in fieldset dictionaries are strings. Returns the
normalized data.
"""
result = []
for name, options in fieldsets:
result.append((name, normalize_dictionary(options)))
return result
def normalize_dictionary(data_dict):
"""
Converts all the keys in "data_dict" to strings. The keys must be
convertible using str().
"""
for key, value in data_dict.items():
if not isinstance(key, str):
del data_dict[key]
data_dict[str(key)] = value
return data_dict
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