feat: add expandAuthor hook to polls

Author: eug-vs

services/polls/polls.hooks.ts

@@ -0,0 +1,38 @@
+import { HookContext } from '@feathersjs/feathers';
+import bluebird from 'bluebird';
+import _ from 'lodash';
+
+import { PollSchema } from '../../models/polls/poll.schema';
+import { UserSchema } from '../../models/users/user.schema';
+import UserModel from '../../models/users/user.model';
+
+
+interface Poll extends Omit<PollSchema, 'authorId'> {
+  author: UserSchema;
+}
+
+const expandAuthor = async (poll: PollSchema): Promise<Poll | null> => {
+  return UserModel.findById(poll.authorId).then((author: UserSchema | null): Poll | null => {
+    if (author) return _.merge(_.omit(poll, 'authorId'), { author });
+    return null;
+  });
+};
+
+const expandAuthorHook = async (context: HookContext): Promise<HookContext> => {
+  context.result = await expandAuthor(context.result);
+  return context;
+};
+
+const expandAuthorManyHook = async (context: HookContext): Promise<HookContext> => {
+  context.result = await bluebird.map(context.result, (poll: any) => expandAuthor(poll));
+  console.log(context.result);
+  return context;
+};
+
+
+export default {
+  after: {
+    get: [expandAuthorHook],
+    find: [expandAuthorManyHook]
+  }
+}

services/polls/polls.service.ts

@@ -1,10 +1,12 @@
 import { Application } from '@feathersjs/express';
 import Model from '../../models/polls/poll.model';
 import service from 'feathers-mongoose';
+import hooks from './polls.hooks'
 
 const PollService = service({ Model });
 
 export default (app: Application): void => {
   app.use('/polls', PollService);
+  app.service('polls').hooks(hooks);
 };