lib/contextio/api/resource_collection.rb in contextio-1.2.4 vs lib/contextio/api/resource_collection.rb in contextio-1.3.0

@@ -118,10 +118,13 @@
       # @!attribute [r] associations_hash
       #   @return [Hash{Symbol => Resource}] A hash of association names to the
       #     associated resource of that type.
       def associations_hash
         @associations_hash ||= self.class.associations.inject({}) do |memo, association_name|
-          memo[association_name.to_sym] = self.send(association_name)
+          if (association = self.send(association_name))
+            memo[association_name.to_sym] = association
+          end
+
           memo
         end
       end
 
       # Make sure a ResourceCollection has the declarative syntax handy.