Muster zur Performancesteigerung der GraphQL Anfragen (SaaS)

app/graphql/resolvers/event_records_search.rb

@@ -5,8 +5,17 @@
 
 class Resolvers::EventRecordsSearch
   include SearchObject.module(:graphql)
+  extras [:lookahead]
 
-  scope { EventRecord.upcoming(context[:current_user]) }
+  scope {
+    lookahead = context[:current_arguments][:lookahead]
+    event_records = EventRecord.upcoming(context[:current_user])
+    event_records = event_records.includes(:addresses) if lookahead.selects?(:addresses)
+    event_records = event_records.includes(:categories) if lookahead.selects?(:categories)
+    event_records = event_records.includes(:dates) if lookahead.selects?(:list_date) || lookahead.selects?(:dates)
+
+    event_records
+  }
 
   type types[Types::QueryTypes::EventRecordType]
 
@@ -88,35 +97,35 @@ def apply_location(scope, value)
   end
 
   def apply_order_with_created_at_desc(scope)
-    scope.order("created_at DESC")
+    scope.order("event_records.created_at DESC")
   end
 
   def apply_order_with_created_at_asc(scope)
-    scope.order("created_at ASC")
+    scope.order("event_records.created_at ASC")
   end
 
   def apply_order_with_updated_at_desc(scope)
-    scope.order("updated_at DESC")
+    scope.order("event_records.updated_at DESC")
   end
 
   def apply_order_with_updated_at_asc(scope)
-    scope.order("updated_at ASC")
+    scope.order("event_records.updated_at ASC")
   end
 
   def apply_order_with_id_desc(scope)
-    scope.order("id DESC")
+    scope.order("event_records.id DESC")
   end
 
   def apply_order_with_id_asc(scope)
-    scope.order("id ASC")
+    scope.order("event_records.id ASC")
   end
 
   def apply_order_with_title_desc(scope)
-    scope.order("title DESC")
+    scope.order("event_records.title DESC")
   end
 
   def apply_order_with_title_asc(scope)
-    scope.order("title ASC")
+    scope.order("event_records.title ASC")
   end
 
   def apply_order_with_list_date_desc(scope)

app/graphql/types/query_type.rb

@@ -19,7 +19,7 @@ class QueryType < Types::BaseObject
       argument :id, ID, required: true
     end
 
-    field :event_records, function: Resolvers::EventRecordsSearch
+    field :event_records, [QueryTypes::EventRecordType], resolver: Resolvers::EventRecordsSearch, extras: [:lookahead]
     field :event_record, QueryTypes::EventRecordType, null: false do
       argument :id, ID, required: true
     end