Fixing rating bug

Users could rate their own answers. Added a check to make sure users can only rate other user's answers as stated on the assignment brief

core/views/answer.hbs

@@ -66,6 +66,7 @@
             <small class="date">{{ date }}</small>
 
             {{#if ../auth}}
+                {{#if_diff user_id ../id }}
                 <form action ="/question/{{ ../question.id }}/rate/{{ id }}" method = "POST" class="rate">
                     <select placeholder="your rate" name="rate">
                         <option value="" selected>Rate this answer</option>
@@ -79,6 +80,7 @@
                     <input type="submit" value="RATE">
                 </form>
                 <p>{{average_rate}}★</p>
+                {{/if_diff}}
             {{/if}}
         </article>
         {{/each}}

server.js

@@ -7,6 +7,7 @@ const serve = require('koa-static')
 const koaBody = require('koa-body')
 const bodyParser = require('koa-bodyparser')
 const session = require('koa-encrypted-session')
+const Handlebars = require('handlebars')
 
 // CUSTOM MODULES IMPORTS
 const answerRoutes = require('./core/routes/answerRoutes')
@@ -15,6 +16,7 @@ const questionRoutes = require('./core/routes/questionRoutes')
 const rateRoutes = require('./core/routes/rateRoutes')
 
 const app = new Koa()
+
 app.keys = ['darkSecret']
 
 app.use(serve('public'))
@@ -37,6 +39,15 @@ app.use(views(`${__dirname}/core/views`,
 	})
 )
 
+Handlebars.registerHelper('if_diff', function(a, b, opts) {
+	if (a !== b) {
+		console.log(this)
+		return opts.fn(this)
+	} else {
+		return opts.inverse(this)
+	}
+})
+
 app.use(answerRoutes.routes())
 app.use(answerRoutes.allowedMethods())