Add document folder list API endpoint

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

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

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'),
 )