refactor: Refactor queries by using related query from objectionjs

packages/backend/src/graphql/queries/get-flows.ts

@@ -1,19 +1,21 @@
 import { GraphQLList } from 'graphql';
-import Flow from '../../models/flow';
 import RequestWithCurrentUser from '../../types/express/request-with-current-user';
 import flowType from '../types/flow';
 
-const getFlowsResolver = async (req: RequestWithCurrentUser): Promise<any[]> => {
-  const flows = await Flow.query()
-    .withGraphJoined('[steps.[connection]]')
-    .where({'flows.user_id': req.currentUser.id});
+const getFlowsResolver = async (
+  req: RequestWithCurrentUser
+): Promise<any[]> => {
+  const flows = await req.currentUser
+    .$relatedQuery('flows')
+    .withGraphJoined('[steps.[connection]]');
 
   return flows;
-}
+};
 
 const getFlows = {
   type: GraphQLList(flowType),
-  resolve: (_: any, _params: any, req: RequestWithCurrentUser) => getFlowsResolver(req)
-}
+  resolve: (_: any, _params: any, req: RequestWithCurrentUser) =>
+    getFlowsResolver(req),
+};
 
 export default getFlows;