Added STATIC_URL to context for icons.
[philo.git] / admin / base.py
index acba9c3..75fa336 100644 (file)
@@ -5,8 +5,10 @@ from django.http import HttpResponse
 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
 
 
@@ -29,16 +31,115 @@ class AttributeInline(generic.GenericTabularInline):
                template = 'admin/philo/edit_inline/tabular_attribute.html'
 
 
+# HACK to bypass model validation for proxy fields
+class SpoofedHiddenFields(object):
+       def __init__(self, proxy_fields, value):
+               self.value = value
+               self.spoofed = list(set(value) - set(proxy_fields))
+       
+       def __get__(self, instance, owner):
+               if instance is None:
+                       return self.spoofed
+               return self.value
+
+
+class SpoofedAddedFields(SpoofedHiddenFields):
+       def __init__(self, proxy_fields, value):
+               self.value = value
+               self.spoofed = list(set(value) | set(proxy_fields))
+
+
+def hide_proxy_fields(cls, attname):
+       val = getattr(cls, attname, [])
+       proxy_fields = getattr(cls, 'proxy_fields')
+       if val:
+               setattr(cls, attname, SpoofedHiddenFields(proxy_fields, val))
+
+def add_proxy_fields(cls, attname):
+       val = getattr(cls, attname, [])
+       proxy_fields = getattr(cls, 'proxy_fields')
+       setattr(cls, attname, SpoofedAddedFields(proxy_fields, val))
+
+
+class EntityAdminMetaclass(admin.ModelAdmin.__metaclass__):
+       def __new__(cls, name, bases, attrs):
+               new_class = super(EntityAdminMetaclass, cls).__new__(cls, name, bases, attrs)
+               hide_proxy_fields(new_class, 'raw_id_fields')
+               add_proxy_fields(new_class, 'readonly_fields')
+               return new_class
+# END HACK
+
 class EntityAdmin(admin.ModelAdmin):
+       __metaclass__ = EntityAdminMetaclass
+       form = EntityForm
        inlines = [AttributeInline]
        save_on_top = True
+       proxy_fields = []
+       
+       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