feat(associate): routes to associate objects with each other

README.md

@@ -78,6 +78,9 @@ DELETE /role/{id}/teams?members=5
 DELETE /team/{id}/role/{id}
 DELETE /role/{id}/team/{id}
 
+# you also get routes to associate objects with each other
+GET /associate/role/{id}/employee/{id} # associates role {id} with employee {id}
+
 # you can specify a prefix to change the URLs like this:
 GET /v1/team/{id}/roles
 ```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hapi-sequelize-crud",
-  "version": "1.2.1",
+  "version": "1.3.0",
   "description": "Hapi plugin that automatically generates RESTful API for CRUD",
   "main": "build/index.js",
   "config": {
@@ -28,6 +28,7 @@
     "grunt-contrib-watch": "0.6.1"
   },
   "dependencies": {
-    "joi": "7.2.1"
+    "joi": "7.2.1",
+    "lodash": "4.0.0"
   }
 }

src/associations/associate.js

@@ -0,0 +1,37 @@
+import joi from 'joi';
+import error from '../error';
+import { capitalize } from 'lodash/string';
+
+let prefix;
+
+export default (server, a, b, options) => {
+  prefix = options.prefix;
+
+  console.log(`${prefix}/associate/${a._singular}/{aid}/${b._singular}/{bid}`);
+  server.route({
+    method: 'GET',
+    path: `${prefix}/associate/${a._singular}/{aid}/${b._singular}/{bid}`,
+
+    @error
+    async handler(request, reply) {
+      let instanceb = await b.findOne({
+        where: {
+          id: request.params.bid
+        }
+      });
+
+      let instancea = await a.findOne({
+        where: {
+          id: request.params.aid
+        }
+      });
+
+      let fna = (instancea['add' + b.name] || instancea['set' + b.name]).bind(instancea);
+      let fnb = (instanceb['add' + a.name] || instanceb['set' + a.name]).bind(instanceb);
+      await fna(instanceb);
+      await fnb(instancea);
+
+      reply(instancea);
+    }
+  })
+}

src/associations/index.js

@@ -1,4 +1,5 @@
 import oneToOne from './one-to-one';
 import oneToMany from './one-to-many';
+import associate from './associate';
 
-export { oneToOne, oneToMany };
+export { oneToOne, oneToMany, associate };

src/index.js

@@ -50,6 +50,9 @@ const register = (server, options = {}, next) => {
           associations.oneToMany(server, source, target, options);
           associations.oneToMany(server, target, source, options);
         }
+
+        associations.associate(server, source, target, options);
+        associations.associate(server, target, source, options);
       } catch(e) {
         // There might be conflicts in case of models associated with themselves and some other
         // rare cases.