From cfccae41a7122b1b8f8f7c2917e7d07095dd6f38 Mon Sep 17 00:00:00 2001
From: Tina Holly <tinacious.design@gmail.com>
Date: Mon, 5 Jun 2017 20:45:35 -0400
Subject: [PATCH] add missing/problematic field to the response body

---
 tests/validate-test.js | 7 ++++++-
 validate.js            | 3 ++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/tests/validate-test.js b/tests/validate-test.js
index 7dd3600..4fadae5 100644
--- a/tests/validate-test.js
+++ b/tests/validate-test.js
@@ -1,4 +1,5 @@
 const request = require('supertest');
+const assert = require('assert');
 
 
 describe('validate() middleware', () => {
@@ -37,7 +38,11 @@ describe('validate() middleware', () => {
       request(server)
         .post('/contacts')
         .send({ firstName: 'Tina' })
-        .expect(400, done)
+        .expect(400)
+        .end((err, res) => {
+          assert.equal(res.body.field, 'email');
+          done();
+        })
     });
     
     it('returns 200 for successful body validation', (done) => {
diff --git a/validate.js b/validate.js
index 778ed5f..1fbd3d8 100644
--- a/validate.js
+++ b/validate.js
@@ -28,7 +28,8 @@ const validate = (schema) => (
     return Joi.validate(obj, schema, (err) => {
       if (err) {
         const message = `${err.details[0].message.replace(/"/g, "'")} at ${err.details[0].path}`;
-        res.status(400).json({ message }).end();
+        const field = err.details[0].context.key;
+        res.status(400).json({ message, field }).end();
         return;
       }