Move context example to a standalone app

Author: Miroslav Bajtoš

example/client-server/models.js

@@ -18,10 +18,6 @@ CartItem.sum = function(cartId, callback) {
         return prev + cur;
       }, 0);
 
-    var ns = loopback.getCurrentContext();
-    if (ns && ns.get('http')) {
-      console.log('Remote call via url: %s', ns.get('http').req.url);
-    }
     callback(null, total);
   });
 }

example/client-server/server.js

@@ -5,7 +5,7 @@ var memory = loopback.createDataSource({
   connector: loopback.Memory
 });
 
-server.use(loopback.rest({context: {enableHttpContext: true}}));
+server.use(loopback.rest());
 server.model(CartItem);
 
 CartItem.attachTo(memory);

example/context/app.js

@@ -0,0 +1,29 @@
+var loopback = require('../../');
+var app = loopback();
+
+// Create a LoopBack context for all requests
+app.use(loopback.context());
+
+// Store a request property in the context
+app.use(function saveHostToContext(req, res, next) {
+  var ns = loopback.getCurrentContext();
+  ns.set('host', req.host);
+  next();
+});
+
+app.use(loopback.rest());
+
+var Color = loopback.createModel('color', { 'name': String });
+Color.beforeRemote('**', function (ctx, unused, next) {
+  // Inside LoopBack code, you can read the property from the context
+  var ns = loopback.getCurrentContext();
+  console.log('Request to host', ns && ns.get('host'));
+  next();
+});
+
+app.dataSource('db', { connector: 'memory' });
+app.model(Color, { dataSource: 'db' });
+
+app.listen(3000, function() {
+  console.log('A list of colors is available at http://localhost:3000/colors');
+});