admin/base.py

   1 from django.conf import settings
   2 from django.contrib import admin
   3 from django.contrib.contenttypes import generic
   4 from django.http import HttpResponse
   5 from django.utils import simplejson as json
   6 from django.utils.html import escape
   7 from philo.models import Tag, Attribute
   8 from philo.forms import AttributeForm, AttributeInlineFormSet
   9 from philo.admin.widgets import TagFilteredSelectMultiple
  10 from mptt.admin import MPTTModelAdmin
  11
  12
  13 COLLAPSE_CLASSES = ('collapse', 'collapse-closed', 'closed',)
  14
  15
  16 class AttributeInline(generic.GenericTabularInline):
  17         ct_field = 'entity_content_type'
  18         ct_fk_field = 'entity_object_id'
  19         model = Attribute
  20         extra = 1
  21         allow_add = True
  22         classes = COLLAPSE_CLASSES
  23         form = AttributeForm
  24         formset = AttributeInlineFormSet
  25         fields = ['key', 'value_content_type']
  26         if 'grappelli' in settings.INSTALLED_APPS:
  27                 template = 'admin/philo/edit_inline/grappelli_tabular_attribute.html'
  28         else:
  29                 template = 'admin/philo/edit_inline/tabular_attribute.html'
  30
  31
  32 class EntityAdmin(admin.ModelAdmin):
  33         inlines = [AttributeInline]
  34         save_on_top = True
  35
  36
  37 class TreeAdmin(MPTTModelAdmin):
  38         pass
  39
  40
  41 class TreeEntityAdmin(TreeAdmin, EntityAdmin):
  42         pass
  43
  44
  45 class TagAdmin(admin.ModelAdmin):
  46         list_display = ('name', 'slug')
  47         prepopulated_fields = {"slug": ("name",)}
  48         search_fields = ["name"]
  49
  50         def response_add(self, request, obj, post_url_continue='../%s/'):
  51                 # If it's an ajax request, return a json response containing the necessary information.
  52                 if request.is_ajax():
  53                         return HttpResponse(json.dumps({'pk': escape(obj._get_pk_val()), 'unicode': escape(obj)}))
  54                 return super(TagAdmin, self).response_add(request, obj, post_url_continue)
  55
  56
  57 class AddTagAdmin(admin.ModelAdmin):
  58         def formfield_for_manytomany(self, db_field, request=None, **kwargs):
  59                 """
  60                 Get a form Field for a ManyToManyField.
  61                 """
  62                 # If it uses an intermediary model that isn't auto created, don't show
  63                 # a field in admin.
  64                 if not db_field.rel.through._meta.auto_created:
  65                         return None
  66
  67                 if db_field.rel.to == Tag and db_field.name in (list(self.filter_vertical) + list(self.filter_horizontal)):
  68                         opts = Tag._meta
  69                         if request.user.has_perm(opts.app_label + '.' + opts.get_add_permission()):
  70                                 kwargs['widget'] = TagFilteredSelectMultiple(db_field.verbose_name, (db_field.name in self.filter_vertical))
  71                                 return db_field.formfield(**kwargs)
  72
  73                 return super(AddTagAdmin, self).formfield_for_manytomany(db_field, request, **kwargs)
  74
  75
  76 admin.site.register(Tag, TagAdmin)