Failure to redirect - using put method instead of Get

index.js

var express = require('express');
var router = express.Router();

var isAuthenticated = function (req, res, next) {
	// if user is authenticated in the session, call the next() to call the next request handler 
	// Passport adds this method to request object. A middleware is allowed to add properties to
	// request and response objects
	if (req.isAuthenticated())
		return next();
	// if the user is not authenticated then redirect him to the login page
	res.redirect('/');
}

var isAdmin = function (req, res, next){
	if (req.user.isAdmin == true)
		return next();
	req.flash('message','This action requires an admin account!');
	res.redirect('/home');
}

module.exports = function(passport){

	/* GET login page. */
	router.get('/', function(req, res) {
    	// Display the Login page with any flash message, if any
		res.render('index', { message: req.flash('message') });
	});

	/* Handle Login POST */
	router.post('/login', passport.authenticate('login', {
		successRedirect: '/home',
		failureRedirect: '/',
		failureFlash : true  
	}));

	/* GET Registration Page */
	router.get('/signup', function(req, res){
		res.render('register',{message: req.flash('message')});
	});

	/* Handle Registration POST */
	router.post('/signup', passport.authenticate('signup', {
		successRedirect: '/home',
		failureRedirect: '/signup',
		failureFlash : true  
	}));

	/* GET Home Page */
	router.get('/home', isAuthenticated, function(req, res){
		res.render('home', { user: req.user, message: req.flash('message')});
	});

	/* GET search Page */
	router.get('/search', isAuthenticated, function(req, res){
		res.render('search', { user: req.user, username : req.user.username, message: req.flash('message')});
	});

	/* GET search Page */
	router.get('/addProd', isAuthenticated, isAdmin, function(req, res){
		res.render('addProd', { user: req.user, message: req.flash('message')});
	});

	/* Handle Logout */
	router.get('/signout', function(req, res) {
		req.logout();
		res.redirect('/');
	});


	return router;
}

product-controller.js

app.controller('productController', ['$scope', '$resource', function ($scope, $resource) {

	$scope.prod={};
	$scope.edited={};
	$scope.prod.currentProd=null;
	$scope.edited.inv=null;

	var Inventory = $resource('/api/inventory/:id', {}, {update : {method : 'PUT'}});

	getInventory = function(req, res){
		Inventory.query(function (results){
			$scope.inventory=results;
			//console.log(user);
	})}

	$scope.getProductBySKU = function (product){
		//console.log(product);
		$scope.prod.currentProd=product;
		$scope.prod.searchSKU.SKU = product.SKU;
		$scope.prod.NameBySKU = product.Product_Name;
		$scope.prod.DescBySKU = product.Product_Description;
		$scope.prod.quantityBySKU = product.Quantity;
		$scope.prod.locationBySKU = product.Product_Location;
		$scope.prod.hideList = true;
		$scope.edited = $scope.prod;
	}

	$scope.getProductByName = function (product){
		$scope.prod.currentProd=product;
		$scope.prod.searchName.Product_Name = product.Product_Name;
		$scope.prod.SKUByName = product.SKU;
		$scope.prod.DescByName = product.Product_Description;
		$scope.prod.quantityByName = product.Quantity;
		$scope.prod.locationByName = product.Product_Location;
		$scope.prod.hideList = true;
	}

	$scope.restoreProduct = function () {
		//console.log(JSON.stringify($scope.prod.currentProd));
		$scope.prod.searchSKU.SKU = $scope.prod.currentProd.SKU;
		$scope.prod.NameBySKU = $scope.prod.currentProd.Product_Name;
		$scope.prod.DescBySKU = $scope.prod.currentProd.Product_Description;
		$scope.prod.quantityBySKU = $scope.prod.currentProd.Quantity;
		$scope.prod.locationBySKU = $scope.prod.currentProd.Product_Location;
		$scope.prod.hideList = true;
	}

	$scope.setEdit=function(){
		$scope.edited.inv = $scope.prod.currentProd;
		$scope.edited.SKU = $scope.prod.searchSKU.SKU;
		$scope.edited.Name = $scope.prod.NameBySKU;
		$scope.edited.Desc = $scope.prod.DescBySKU;
		$scope.edited.quantity = $scope.prod.quantityBySKU;
		$scope.edited.locations = $scope.prod.locationBySKU;
		//console.log('setEdit:' + JSON.stringify($scope.edited.inv));
	}

	$scope.updateProduct = function() {
		//$scope.edited.inv = $scope.edited.searchSKU;
		$scope.edited.inv.SKU = $scope.edited.SKU;
		$scope.edited.inv.Product_Name = $scope.edited.Name;
		$scope.edited.inv.Product_Description = $scope.edited.Desc;
		$scope.edited.inv.Quantity = $scope.edited.quantity;
		$scope.edited.inv.Product_Location = $scope.edited.locations;
		//console.log('Edited: ' + JSON.stringify($scope.edited.inv));
		//console.log('Not Edited: ' + JSON.stringify($scope.prod.currentProd));
		var inventory = new Inventory($scope.edited.inv);
		//console.log('edited.inv._id: ' + $scope.edited.inv._id);
		inventory.$update({id : $scope.edited.inv._id}, inventory, function (err, results){
			if(err){};
			console.log(results);
		});
	}

	$scope.hideEdit = function(){
		$scope.prod.showEdit = false;
	}
	$scope.showEdit = function(){
		$scope.prod.showEdit = true;
	}

	$scope.showList = function(){
		$scope.prod.hideList = false;
	}

	$scope.orderBySKU = 'SKU';
	$scope.orderByName = 'Product_Name';
	$scope.hideEdit();
	getInventory();
	
	
}]);

search.jade

extends layout

block navigation
	div#navbar.navbar.navbar-default
		ul.nav.nav-pills
			li
				a(href='/home') Home
			li.active
				a(href='/search') Product Search
			li
				a(href='/addProd') Add Inventory
			li#user
				| Signed in as: #{username}
			li#signout
				a(href="/signout") Sign Out
block heading
	script(text="text/javascript", src="../js/controllers/product-controller.js")
block content
	div#outerForm.panel.panel-primary(ng-controller="productController")
		h4#mainHeading.panel.panel-heading(ng-hide="prod.showEdit==true")
			| Product Search
		h4#mainHeading.panel.panel-heading(ng-show="prod.showEdit==true")
			| Edit Product
		ul.nav.nav-tabs(ng-hide="prod.showEdit==true")
			li(ng-class="{active:Search===SKU}")
				a(ng-click="Search = SKU; loadSKUSearch()") SKU
			li(ng-class="{active:Search===!SKU}")
				a(ng-click="Search = ! SKU; loadNameSearch()") Product Name
		div#innerForm.panel.panel-info(ng-show='Search === SKU')
			h4.panel.panel-heading(ng-hide="prod.showEdit==true")
				| Search by SKU:
			h4.panel.panel-heading(ng-show="prod.showEdit==true")
				| Edit:
			div#formContainer.container-fluid
				div#prodImg.column
					img#productpic(class='thumbnail', src='./img/StockPhoto.jpg')
					button#editProdButton.btn.btn-primary(ng-hide="prod.showEdit == true" ng-click='showEdit();setEdit()') Edit
				div#prodForm.column
					form#SKUSearch(class='form' autocomplete='off' ng-hide="prod.showEdit == true")
								label SKU:
								input(type='text', name='SKU', class='form-control', placeholder='SKU', ng-model='prod.searchSKU.SKU',  ng-change="showList()", ng-click="showList()", required, autofocus)
								div(ng-hide= "prod.searchSKU.SKU == null || prod.hideList == true")
									div#prodList
										table
											tr
												th SKU
												th Product Name
											tr(ng-repeat="prod in inventory | orderBy: orderBySKU | filter: prod.searchSKU")
												td 
													a(href="" ng-click="getProductBySKU(prod)") {{prod.SKU}}
												td {{prod.Product_Name}}
								label Product Name:
								input(type='text', ng-model="prod.NameBySKU" name='prodName', class='form-control nomargin', placeholder='Product Name', readonly)
								label Product Description:
								textarea#desc(type='text', ng-model="prod.DescBySKU" name='prodDesc', class='form-control', placeholder='Product Description',readonly)
								label Quantity Available:
								input(type='text', ng-model="prod.quantityBySKU" name='quantity', class='form-control', placeholder='Quantity Available',readonly)
								label Location:
								input(type='text', ng-model="prod.locationBySKU" name='location', class='form-control', placeholder='Location',readonly)
								#message
									if message
										h2.text-center.error-message #{message}
								span.clearfix
					form#editSKUProd(class='form' autocomplete='off' ng-show="prod.showEdit == true")
								label SKU:
								input(type='text', ng-model='edited.SKU', name='SKU', class='form-control', placeholder='SKU')
								label Product Name:
								input(type='text', ng-model="edited.Name" name='prodName', class='form-control nomargin', placeholder='Product Name')
								label Product Description:
								textarea#desc(type='text', ng-model="edited.Desc" name='prodDesc', class='form-control', placeholder='Product Description')
								label Quantity Available:
								input(type='text', ng-model="edited.quantity" name='quantity', class='form-control', placeholder='Quantity Available')
								label Location:
								input(type='text', ng-model="edited.locations" name='location', class='form-control', placeholder='Location')
								span.clearfix
									button#editButtonGroup(class='btn btn-primary', type='button', ng-click="updateProduct(edited);hideEdit();restoreProduct()") Submit
									button#editButtonGroup(class='btn btn-primary', type='button' ng-click="restoreProduct();hideEdit()") Cancel
		div#searchNameForm.panel.panel-info(ng-show="Search === ! SKU")
			h4.panel.panel-heading
				| Search by Produt Name:
			div#formContainer.container-fluid
				div#prodImg.column
					img#productpic(class='thumbnail', src='./img/StockPhoto.jpg')
					button#editProdButton.btn.btn-primary
						a#editProdLink(href='/home') Edit Item
				div#prodForm
					form#NameSearch(class='form' autocomplete='off')
								label Product Name:
								input(type='text', name='prodName', class='form-control', placeholder='Product Name', ng-model="prod.searchName.Product_Name", ng-change="showList()", ng-click="showList()", required, autofocus)
								div(ng-hide="prod.searchName.Product_Name == null || prod.hideList == true")
									div#prodList
										table
											tr
												th SKU
												th Product Name
											tr(ng-repeat="prod in inventory | orderBy: orderByName | filter: prod.searchName")
												td 
													a(href="" ng-click="getProductByName(prod)") {{prod.SKU}}
												td {{prod.Product_Name}}
								label SKU:
								input(type='text', ng-model="prod.SKUByName" name='SKU', class='form-control', placeholder='SKU',required, readonly)
								label Product Description:
								textarea#desc(type='text', ng-model="prod.DescByName" name='prodDesc', class='form-control', placeholder='Product Description',readonly)
								label Quantity Available:
								input(type='text', ng-model="prod.quantityByName" name='quantity', class='form-control', placeholder='Quantity Available',readonly)
								label Location:
								input(type='text', ng-model="prod.locationByName" name='location', class='form-control', placeholder='Location',readonly)
								//- button(class='btn btn-lg btn-primary btn-block', type='submit') Search
								span.clearfix
block footer	
	p &copy Acme Warehouse Managment Systems 2015

server.js

var express = require('express'),
	mongoose = require('mongoose'),
	dbConfig = require('./server/db/db.js'),
	bodyparser = require('body-parser'),
	cookieParser = require('cookie-parser'),
	stylus	= require('stylus'),
	http = require('http'),
	serverController = require('./server/controllers/server-controller');

var app = express();

//DB connection
mongoose.connect(dbConfig.url);

// mongoose.connect('mongodb://localhost:27017/anidopt');

//View engine config
app.set('views', __dirname + '/client/views');
app.set('view engine', 'jade');

// app.use(defaultContentTypeMiddleware);
app.use(bodyparser.json());
app.use(bodyparser.urlencoded({extended: true}));
app.use(cookieParser());
app.use(express.static(__dirname + '/client/'));

//Configure Passport Authentication
var passport = require('passport');
//Session Handling
var expressSession = require('express-session');
app.use(expressSession({secret : 'mySecretKey'}));
app.use(passport.initialize());
app.use(passport.session());

// Using the flash middleware provided by connect-flash to store messages in session
 // and displaying in templates
var flash = require('connect-flash');
app.use(flash());

// Initialize Passport
var initPassport = require('./server/passport/init');
initPassport(passport);

//routes defined for passport authentication
var routes = require('./client/js/routes/index')(passport);
app.use('/', routes);

//REST API Routes
app.post('/api/addProd', serverController.addProduct);
app.get('/api/inventory', serverController.getInventory);
app.put('/api/inventory/:_id', serverController.editInventory);

//Start server on port 3000
app.listen(3000, function () {
	console.log("Server is listening...");
});