Merge pull request #362 from SchrodingersGat/api-fixes

Api fixes

InvenTree/build/api.py

@@ -40,6 +40,17 @@ class BuildList(generics.ListCreateAPIView):
     ]
 
 
+class BuildDetail(generics.RetrieveUpdateAPIView):
+    """ API endpoint for detail view of a Build object """
+
+    queryset = Build.objects.all()
+    serializer_class = BuildSerializer
+
+    permission_classes = [
+        permissions.IsAuthenticatedOrReadOnly,
+    ]
+
+
 class BuildItemList(generics.ListCreateAPIView):
     """ API endpoint for accessing a list of BuildItem objects
 
@@ -85,5 +96,7 @@ build_item_api_urls = [
 build_api_urls = [
     url(r'^item/?', include(build_item_api_urls)),
 
+    url(r'^(?P<pk>\d+)/', BuildDetail.as_view(), name='api-build-detail'),
+
     url(r'^.*$', BuildList.as_view(), name='api-build-list'),
 ]

InvenTree/part/models.py

@@ -379,7 +379,7 @@ class Part(models.Model):
 
         total -= self.allocation_count
 
-        return total
+        return max(total, 0)
 
     def isStarredBy(self, user):
         """ Return True if this part has been starred by a particular user """

InvenTree/part/serializers.py

@@ -50,6 +50,7 @@ class PartBriefSerializer(serializers.ModelSerializer):
             'url',
             'full_name',
             'description',
+            'total_stock',
             'available_stock',
             'image_url',
         ]