Add optional thumbnail model field.

categories/admin.py

@@ -81,7 +81,7 @@ class CategoryAdmin(TreeEditor, admin.ModelAdmin):
     prepopulated_fields = {'slug': ('name',)}
     fieldsets = (
         (None, {
-            'fields': ('parent', 'name')
+            'fields': ('parent', 'name', 'thumbnail')
         }),
         ('Meta Data', {
             'fields': ('alternate_title', 'description', 'meta_keywords', 'meta_extra'),
@@ -117,4 +117,4 @@ class Media:
                 'fieldsets': fieldsets + (('Categories',{
                     'fields': fields
                 }),)
-            }))
+            }))

categories/migration/add_thumbnail.sql

@@ -0,0 +1,3 @@
+BEGIN;
+ALTER TABLE "categories_category" ADD COLUMN "thumbnail" varchar(100);
+COMMIT;

categories/models.py

@@ -9,7 +9,7 @@
 
 from mptt.models import MPTTModel
 
-from settings import RELATION_MODELS, RELATIONS
+from settings import RELATION_MODELS, RELATIONS, THUMBNAIL_UPLOAD_PATH
 
 class Category(MPTTModel):
     parent = models.ForeignKey('self', 
@@ -19,6 +19,7 @@ class Category(MPTTModel):
         help_text="Leave this blank for an Category Tree", 
         verbose_name='Parent')
     name = models.CharField(max_length=100)
+    thumbnail = models.ImageField(upload_to=THUMBNAIL_UPLOAD_PATH, null=True, blank=True)
     order = models.IntegerField(blank=True, null=True)
     slug = models.SlugField()
     alternate_title = models.CharField(

categories/settings.py

@@ -8,3 +8,6 @@
 DEFAULT_RELATION_MODELS = []
 RELATION_MODELS = getattr(settings, 'CATEGORIES_RELATION_MODELS', DEFAULT_RELATION_MODELS) or []
 RELATIONS = [Q(app_label=al, model=m) for al, m in [x.split('.') for x in RELATION_MODELS]]
+
+# For assigning a thumbnail to a category
+THUMBNAIL_UPLOAD_PATH = getattr(settings, 'CATEGORIES_THUMBNAIL_UPLOAD_PATH', 'uploads/categories/thumbnails')