We're nowusing a nested tag serializer for the API

apps/rp/api/serializers.py

 from rest_framework import serializers
 
-from taggit.managers import TaggableManager
+from taggit.models import Tag
 from rp.models import Article
 
 
-class TagListSerializer(serializers.Field):
-    class Meta:
-        model = TaggableManager(blank=True)
-
-    def to_representation(self, obj):
-        if type(obj) is not list:
-            return [tag.name for tag in obj.all()]
-        return obj
+class TagListSerializer(serializers.ModelSerializer):
+    name = serializers.CharField(max_length=200)
 
-    def to_internal_value(self, data):
-        return [tag.strip() for tag in data.split(",")]
+    class Meta:
+        model = Tag
+        fields = ('name', )
 
 
 class ArticleSerializer(serializers.ModelSerializer):
     #: List of short tags to describe the article (eg. "Privacy", "Copyright")
     tags = TagListSerializer(help_text="""
-        List of short tags to describe the article (eg."Privacy, Copyright").
-        Must be a list of tags, coma separated (or an empty string).
-        """, default="")
+        List of short tags to describe the article (eg."Privacy", "Copyright").
+        It must be a valid JSON list of items with a field named name.
+
+        For instance [{"name": "Privacy"}, {"name": "Copyright"}]
+        """, many=True, required=False)
 
     class Meta:
         model = Article

apps/rp/tests/test_article.py

@@ -158,7 +158,7 @@ class TestArticleApi(TestCase):
                              {'url': a.url, 'title': a.title,
                               'tags': ''
                               })
-        assert [t.name for t in a.tags.all()] == r.data['tags']
+        assert [t.name for t in a.tags.all()] == [t['name'] for t in r.data['tags']]
 
     def test_api_recover(self):
         # Can we recover if we're no Jedis