renamed example to params

examples/params/app.js

@@ -0,0 +1,64 @@
+
+// Expose modules in ./support for demo purposes
+require.paths.unshift(__dirname + '/../../support');
+
+/**
+ * Module dependencies.
+ */
+
+var express = require('../../lib/express')
+  , app = express.createServer();
+
+// Faux database
+
+var users = [
+    { name: 'tj' }
+  , { name: 'tobi' }
+  , { name: 'loki' }
+  , { name: 'jane' }
+  , { name: 'bandit' }
+];
+
+// Convert :to and :from to integers
+
+app.param(['to', 'from'], function(n){ return parseInt(n, 10); });
+
+// Load user by id
+
+app.param('user', function(req, res, next, id){
+  if (req.user = users[id]) {
+    next();
+  } else {
+    next(new Error('failed to find user'));
+  }
+});
+
+/**
+ * GET index.
+ */
+
+app.get('/', function(req, res){
+  res.send('Visit /user/0 or /users/0-2');
+});
+
+/**
+ * GET :user.
+ */
+
+app.get('/user/:user', function(req, res, next){
+  res.send('user ' + req.user.name);
+});
+
+/**
+ * GET users :from - :to.
+ */
+
+app.get('/users/:from-:to', function(req, res, next){
+  var from = req.params.from
+    , to = req.params.to
+    , names = users.map(function(user){ return user.name; });
+  res.send('users ' + names.slice(from, to).join(', '));
+});
+
+app.listen(3000);
+console.log('Express application listening on port 3000');