From b20314cd435ce8597fd20c6f79fc97f80f475920 Mon Sep 17 00:00:00 2001
From: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>
Date: Fri, 3 Oct 2014 09:28:59 -0400
Subject: [PATCH] Add document folder list API endpoint

---
 mayan/apps/tags/api_views.py   | 28 ++++++++++++++++++++++++++++
 mayan/apps/tags/serializers.py |  1 +
 mayan/apps/tags/urls.py        |  3 ++-
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/mayan/apps/tags/api_views.py b/mayan/apps/tags/api_views.py
index 203e08b8b5..602d36f43b 100644
--- a/mayan/apps/tags/api_views.py
+++ b/mayan/apps/tags/api_views.py
@@ -1,8 +1,14 @@
 from __future__ import absolute_import
 
+from django.core.exceptions import PermissionDenied
+from django.shortcuts import get_object_or_404
+
 from rest_framework import generics
 from taggit.models import Tag
 
+from documents.models import Document
+from documents.permissions import PERMISSION_DOCUMENT_VIEW
+from permissions.models import Permission
 from rest_api.filters import MayanObjectPermissionsFilter
 from rest_api.permissions import MayanPermission
 
@@ -31,3 +37,25 @@ class APITagListView(generics.ListAPIView):
 
     filter_backends = (MayanObjectPermissionsFilter,)
     mayan_object_permissions = {'GET': [PERMISSION_TAG_VIEW]}
+
+
+class APIDocumentTagListView(generics.ListAPIView):
+    """
+    Returns a list of all the tags attached to a document.
+    """
+
+    serializer_class = TagSerializer
+
+    permission_classes = (MayanPermission,)
+    filter_backends = (MayanObjectPermissionsFilter,)
+    mayan_object_permissions = {'GET': [PERMISSION_TAG_VIEW]}
+
+    def get_queryset(self):
+        document = get_object_or_404(Document, pk=self.kwargs['pk'])
+        try:
+            Permission.objects.check_permissions(self.request.user, [PERMISSION_DOCUMENT_VIEW])
+        except PermissionDenied:
+            AccessEntry.objects.check_access(PERMISSION_DOCUMENT_VIEW, self.request.user, document)
+
+        queryset = document.tags.all()
+        return queryset
diff --git a/mayan/apps/tags/serializers.py b/mayan/apps/tags/serializers.py
index 36d6217648..9bba498440 100644
--- a/mayan/apps/tags/serializers.py
+++ b/mayan/apps/tags/serializers.py
@@ -17,4 +17,5 @@ class TagSerializer(serializers.HyperlinkedModelSerializer):
     color = serializers.CharField(source='properties.get.color')
 
     class Meta:
+        fields = ('id', 'url', 'name', 'color', 'slug')
         model = Tag
diff --git a/mayan/apps/tags/urls.py b/mayan/apps/tags/urls.py
index 51d880aae4..fdcfe8b24d 100644
--- a/mayan/apps/tags/urls.py
+++ b/mayan/apps/tags/urls.py
@@ -2,7 +2,7 @@ from __future__ import absolute_import
 
 from django.conf.urls import patterns, url
 
-from .api_views import APITagListView, APITagView
+from .api_views import APIDocumentTagListView, APITagListView, APITagView
 
 urlpatterns = patterns('tags.views',
     url(r'^list/$', 'tag_list', (), 'tag_list'),
@@ -26,4 +26,5 @@ urlpatterns = patterns('tags.views',
 api_urls = patterns('',
     url(r'^tags/(?P<pk>[0-9]+)/$', APITagView.as_view(), name='tag-detail'),
     url(r'^tags/$', APITagListView.as_view(), name='tag-list'),
+    url(r'^document/(?P<pk>[0-9]+)/tags/$', APIDocumentTagListView.as_view(), name='document-tag-list'),
 )