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