Merge branch 'entity_raw_id_fields'

[philo.git] / admin / base.py

diff --git a/admin/base.py b/admin/base.py
index f4a5f2f..81ff8f8 100644 (file)
--- a/admin/base.py
+++ b/admin/base.py
@@ -1,7 +1,15 @@
+from django.conf import settings

 from django.contrib import admin
 from django.contrib.contenttypes import generic
 from django.contrib import admin
 from django.contrib.contenttypes import generic

+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 import Tag, Attribute

-from philo.forms import AttributeForm, AttributeInlineFormSet
+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

 
 
 COLLAPSE_CLASSES = ('collapse', 'collapse-closed', 'closed',)
 
 
 COLLAPSE_CLASSES = ('collapse', 'collapse-closed', 'closed',)


@@ -12,22 +20,158 @@ class AttributeInline(generic.GenericTabularInline):
        ct_fk_field = 'entity_object_id'
        model = Attribute
        extra = 1
        ct_fk_field = 'entity_object_id'
        model = Attribute
        extra = 1

-       template = 'admin/philo/edit_inline/tabular_attribute.html'

        allow_add = True
        classes = COLLAPSE_CLASSES
        form = AttributeForm
        formset = AttributeInlineFormSet
        allow_add = True
        classes = COLLAPSE_CLASSES
        form = AttributeForm
        formset = AttributeInlineFormSet

-       exclude = ['value_object_id']
+       fields = ['key', 'value_content_type']
+       if 'grappelli' in settings.INSTALLED_APPS:
+               template = 'admin/philo/edit_inline/grappelli_tabular_attribute.html'
+       else:
+               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()
+                               readonly_fields = new_class.readonly_fields
+                               new_class._real_readonly_fields = readonly_fields
+                               new_class.readonly_fields = list(readonly_fields) + 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):
 
 
 class EntityAdmin(admin.ModelAdmin):

+       __metaclass__ = EntityAdminMetaclass
+       form = EntityForm

        inlines = [AttributeInline]
        save_on_top = True
        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(EntityAdmin, TreeAdmin):
+       pass

 
 
 class TagAdmin(admin.ModelAdmin):
        list_display = ('name', 'slug')
        prepopulated_fields = {"slug": ("name",)}
        search_fields = ["name"]
 
 
 class TagAdmin(admin.ModelAdmin):
        list_display = ('name', 'slug')
        prepopulated_fields = {"slug": ("name",)}
        search_fields = ["name"]

+       
+       def response_add(self, request, obj, post_url_continue='../%s/'):
+               # If it's an ajax request, return a json response containing the necessary information.
+               if request.is_ajax():
+                       return HttpResponse(json.dumps({'pk': escape(obj._get_pk_val()), 'unicode': escape(obj)}))
+               return super(TagAdmin, self).response_add(request, obj, post_url_continue)
+
+
+class AddTagAdmin(admin.ModelAdmin):
+       def formfield_for_manytomany(self, db_field, request=None, **kwargs):
+               """
+               Get a form Field for a ManyToManyField.
+               """
+               # If it uses an intermediary model that isn't auto created, don't show
+               # a field in admin.
+               if not db_field.rel.through._meta.auto_created:
+                       return None
+               
+               if db_field.rel.to == Tag and db_field.name in (list(self.filter_vertical) + list(self.filter_horizontal)):
+                       opts = Tag._meta
+                       if request.user.has_perm(opts.app_label + '.' + opts.get_add_permission()):
+                               kwargs['widget'] = TagFilteredSelectMultiple(db_field.verbose_name, (db_field.name in self.filter_vertical))
+                               return db_field.formfield(**kwargs)
+               
+               return super(AddTagAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)
+

 
 admin.site.register(Tag, TagAdmin)
\ No newline at end of file
 
 admin.site.register(Tag, TagAdmin)
\ No newline at end of file