from django.utils import simplejson as json
from django.utils.html import escape
from philo.models import Tag, Attribute
+from philo.models.fields.entities import ForeignKeyAttribute, ManyToManyAttribute
from philo.admin.forms.attributes import AttributeForm, AttributeInlineFormSet
from philo.admin.widgets import TagFilteredSelectMultiple
+from philo.forms.entities import EntityForm, proxy_fields_for_entity_model
from mptt.admin import MPTTModelAdmin
template = 'admin/philo/edit_inline/tabular_attribute.html'
+def hide_proxy_fields(cls, attname, proxy_field_set):
+ val_set = set(getattr(cls, attname))
+ if proxy_field_set & val_set:
+ cls._hidden_attributes[attname] = list(val_set)
+ setattr(cls, attname, list(val_set - proxy_field_set))
+
+
+class EntityAdminMetaclass(admin.ModelAdmin.__metaclass__):
+ def __new__(cls, name, bases, attrs):
+ # HACK to bypass model validation for proxy fields by masking them as readonly fields
+ new_class = super(EntityAdminMetaclass, cls).__new__(cls, name, bases, attrs)
+ form = getattr(new_class, 'form', None)
+ if form:
+ opts = form._meta
+ if issubclass(form, EntityForm) and opts.model:
+ proxy_fields = proxy_fields_for_entity_model(opts.model).keys()
+
+ # Store readonly fields iff they have been declared.
+ if 'readonly_fields' in attrs or not hasattr(new_class, '_real_readonly_fields'):
+ new_class._real_readonly_fields = new_class.readonly_fields
+
+ readonly_fields = new_class.readonly_fields
+ new_class.readonly_fields = list(set(readonly_fields) | set(proxy_fields))
+
+ # Additional HACKS to handle raw_id_fields and other attributes that the admin
+ # uses model._meta.get_field to validate.
+ new_class._hidden_attributes = {}
+ proxy_fields = set(proxy_fields)
+ hide_proxy_fields(new_class, 'raw_id_fields', proxy_fields)
+ #END HACK
+ return new_class
+
+
class EntityAdmin(admin.ModelAdmin):
+ __metaclass__ = EntityAdminMetaclass
+ form = EntityForm
inlines = [AttributeInline]
save_on_top = True
+
+ def __init__(self, *args, **kwargs):
+ # HACK PART 2 restores the actual readonly fields etc. on __init__.
+ if hasattr(self, '_real_readonly_fields'):
+ self.readonly_fields = self.__class__._real_readonly_fields
+ if hasattr(self, '_hidden_attributes'):
+ for name, value in self._hidden_attributes.items():
+ setattr(self, name, value)
+ # END HACK
+ super(EntityAdmin, self).__init__(*args, **kwargs)
+
+ def formfield_for_dbfield(self, db_field, **kwargs):
+ """
+ Override the default behavior to provide special formfields for EntityEntitys.
+ Essentially clones the ForeignKey/ManyToManyField special behavior for the Attribute versions.
+ """
+ if not db_field.choices and isinstance(db_field, (ForeignKeyAttribute, ManyToManyAttribute)):
+ request = kwargs.pop("request", None)
+ # Combine the field kwargs with any options for formfield_overrides.
+ # Make sure the passed in **kwargs override anything in
+ # formfield_overrides because **kwargs is more specific, and should
+ # always win.
+ if db_field.__class__ in self.formfield_overrides:
+ kwargs = dict(self.formfield_overrides[db_field.__class__], **kwargs)
+
+ # Get the correct formfield.
+ if isinstance(db_field, ManyToManyAttribute):
+ formfield = self.formfield_for_manytomanyattribute(db_field, request, **kwargs)
+ elif isinstance(db_field, ForeignKeyAttribute):
+ formfield = self.formfield_for_foreignkeyattribute(db_field, request, **kwargs)
+
+ # For non-raw_id fields, wrap the widget with a wrapper that adds
+ # extra HTML -- the "add other" interface -- to the end of the
+ # rendered output. formfield can be None if it came from a
+ # OneToOneField with parent_link=True or a M2M intermediary.
+ # TODO: Implement this.
+ #if formfield and db_field.name not in self.raw_id_fields:
+ # formfield.widget = admin.widgets.RelatedFieldWidgetWrapper(formfield.widget, db_field, self.admin_site)
+
+ return formfield
+ return super(EntityAdmin, self).formfield_for_dbfield(db_field, **kwargs)
+
+ def formfield_for_foreignkeyattribute(self, db_field, request=None, **kwargs):
+ """Get a form field for a ForeignKeyAttribute field."""
+ db = kwargs.get('using')
+ if db_field.name in self.raw_id_fields:
+ kwargs['widget'] = admin.widgets.ForeignKeyRawIdWidget(db_field, db)
+ #TODO: Add support for radio fields
+ #elif db_field.name in self.radio_fields:
+ # kwargs['widget'] = widgets.AdminRadioSelect(attrs={
+ # 'class': get_ul_class(self.radio_fields[db_field.name]),
+ # })
+ # kwargs['empty_label'] = db_field.blank and _('None') or None
+
+ return db_field.formfield(**kwargs)
+
+ def formfield_for_manytomanyattribute(self, db_field, request=None, **kwargs):
+ """Get a form field for a ManyToManyAttribute field."""
+ db = kwargs.get('using')
+
+ if db_field.name in self.raw_id_fields:
+ kwargs['widget'] = admin.widgets.ManyToManyRawIdWidget(db_field, using=db)
+ kwargs['help_text'] = ''
+ #TODO: Add support for filtered fields.
+ #elif db_field.name in (list(self.filter_vertical) + list(self.filter_horizontal)):
+ # kwargs['widget'] = widgets.FilteredSelectMultiple(db_field.verbose_name, (db_field.name in self.filter_vertical))
+
+ return db_field.formfield(**kwargs)
class TreeAdmin(MPTTModelAdmin):
pass
-class TreeEntityAdmin(TreeAdmin, EntityAdmin):
+class TreeEntityAdmin(EntityAdmin, TreeAdmin):
pass
git.ithinksw.org / philo.git / blobdiff