Merge pull request #3 from eug-vs/hooks

Expand authorId field in polls

1 files changed, 40 insertions, 0 deletions

diff --git a/services/polls/polls.hooks.ts b/services/polls/polls.hooks.ts
new file mode 100644
index 0000000..fc5fa45
--- /dev/null
+++ b/services/polls/polls.hooks.ts
@@ -0,0 +1,40 @@
+import { HookContext } from '@feathersjs/feathers';
+import bluebird from 'bluebird';
+import _ from 'lodash';
+
+import { Poll, PollSchema } from '../../models/polls/poll.schema';
+import { User } from '../../models/users/user.schema';
+import UserModel from '../../models/users/user.model';
+
+
+const expandAuthor = async (poll: PollSchema): Promise<Poll | null> => {
+  return UserModel.findById(poll.authorId)
+    .lean<User>()
+    .exec()
+    .then((author: User | null): Poll | null => {
+      return author && _.merge(_.omit(poll, 'authorId'), { author });
+    })
+    .catch(err => {
+      console.error(err);
+      return err;
+    });
+};
+
+const expandAuthorHook = async (context: HookContext): Promise<HookContext> => {
+  context.result = await expandAuthor(context.result);
+  return context;
+};
+
+const expandAuthorManyHook = async (context: HookContext): Promise<HookContext> => {
+  const polls = await bluebird.map(context.result, (poll: any) => expandAuthor(poll));
+  context.result = _.compact(polls);
+  return context;
+};
+
+
+export default {
+  after: {
+    get: [expandAuthorHook],
+    find: [expandAuthorManyHook]
+  }
+}