OpenConceptLab/ocl_issues#1126 | fixing source/collection summary sav…

…e tasks

core/common/tasks.py

@@ -501,37 +501,41 @@ def index_source_mappings(source_id):
 def update_source_active_concepts_count(source_id):
     from core.sources.models import Source
     source = Source.objects.filter(id=source_id).first()
-    before_active_concepts = source.active_concepts
-    source.set_active_concepts()
-    if before_active_concepts != source.active_concepts:
-        source.save(update_fields=['active_concepts'])
+    if source:
+        before_active_concepts = source.active_concepts
+        source.set_active_concepts()
+        if before_active_concepts != source.active_concepts:
+            source.save(update_fields=['active_concepts'])
 
 
 @app.task
 def update_source_active_mappings_count(source_id):
     from core.sources.models import Source
     source = Source.objects.filter(id=source_id).first()
-    before_active_mappings = source.active_mappings
-    source.set_active_mappings()
-    if before_active_mappings != source.active_mappings:
-        source.save(update_fields=['active_mappings'])
+    if source:
+        before_active_mappings = source.active_mappings
+        source.set_active_mappings()
+        if before_active_mappings != source.active_mappings:
+            source.save(update_fields=['active_mappings'])
 
 
 @app.task
 def update_collection_active_concepts_count(collection_id):
     from core.collections.models import Collection
     collection = Collection.objects.filter(id=collection_id).first()
-    before_active_concepts = collection.active_concepts
-    collection.set_active_concepts()
-    if before_active_concepts != collection.active_concepts:
-        collection.save(update_fields=['active_concepts'])
+    if collection:
+        before_active_concepts = collection.active_concepts
+        collection.set_active_concepts()
+        if before_active_concepts != collection.active_concepts:
+            collection.save(update_fields=['active_concepts'])
 
 
 @app.task
 def update_collection_active_mappings_count(collection_id):
     from core.collections.models import Collection
     collection = Collection.objects.filter(id=collection_id).first()
-    before_active_mappings = collection.active_mappings
-    collection.set_active_mappings()
-    if before_active_mappings != collection.active_mappings:
-        collection.save(update_fields=['active_mappings'])
+    if collection:
+        before_active_mappings = collection.active_mappings
+        collection.set_active_mappings()
+        if before_active_mappings != collection.active_mappings:
+            collection.save(update_fields=['active_mappings'])