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    <p>Angular js provides its own routes. rails routes will always be used when you want to connect your views with database(CRUD). that is data binding with angular.js now i will show you how to use it with rails...</p> <p>I want to add new user using angular js views and list all users. i will use rails as backend to store users in database so i will create user_controller</p> <ol> <li><p>First Create resource of user. we will not create any views so be carefull for that</p> <pre><code>rails g resource user name:string </code></pre></li> <li><p>Then go to route.rb and check there is a route created, and create Home controller with index action that we will use as our single page application where our output will be yield.</p> <pre><code>rails g controller home index root to: "home#index" </code></pre></li> <li><p>type this command on terminal where you will see our 7 routes. we never use new and edit method, because new and edit don't respond to json.</p> <pre><code>rake routes </code></pre></li> <li><p>Now we want all user with a unique name so go to create_user migration and uncomment this line and then we will migrate the database.</p> <pre><code>add_index :users, :name, unique: true rake db:migrate </code></pre></li> <li><p>Now modify our controller so that all data fetching and insertion will be done with json format. so put this code inside users_controller.rb, if you are using rails 4 then follow this otherwise not. attributes will be adjustable in model.</p> <pre><code>class UsersController &lt; ApplicationController respond_to :json def index respond_with User.all end def create respond_with User.create(user_params) end private def user_params params.require(:user).permit(:name) end end </code></pre> <p>Its time to use angulajs in our rails application</p></li> <li><p>Go to application.html.erb replace tag line with this</p> <pre><code> &lt;html ng-app="userApp"&gt; </code></pre></li> <li><p>Now add angular.js file in asses/javascripts, download it from <a href="http://angularjs.org/" rel="noreferrer">http://angularjs.org/</a></p></li> <li><p>Now we will create a controller to handle our angular application routes to know then that this controller wants something from me. so type this on terminal</p> <pre><code>mkdir -p app/assets/javascripts/angular/controllers </code></pre></li> <li><p>Now let's create the controller file itself. I'm calling this controller the "userCtrl", Thus our filename will be app/assets/javascripts/angular/controllers/userCtrl.js.coffee</p></li> <li><p>In controller userCtrl</p> <pre><code>app = angular.module("userApp", ["ngResource"]) @userCtrl = ($scope, $resource) -&gt; User = $resource("/users", {id: "@id"}, {update: {method: "PUT"}}) $scope.users = User.query() $scope.createUser = -&gt; user = User.save($scope.newUser) $scope.users.push(user) </code></pre> <p>(This will insert new user record into database, by creating createUser method)</p></li> <li><p>Create a view for taking input from user write this code in home/index.html.erb.</p> <pre><code>&lt;div ng-controller="userCtrl"&gt; &lt;form ng-submit="createUser()"&gt; &lt;label&gt;Enter Name&lt;/label&gt; &lt;input type="text" placeholder="Enter user name" ng-model="newUser.name" /&gt; &lt;button ng-click="createUser()" class="button tiny"&gt;Submit&lt;/button&gt; &lt;/form&gt; &lt;!-- List all usres --&gt; &lt;h4 ng-show="users.$resolved &amp;&amp; users.length &gt; 1"&gt;All users&lt;/h4&gt; &lt;span ng-repeat="c in users"&gt; {{c.name}}&lt;br&gt; &lt;/span&gt; &lt;/div&gt; </code></pre></li> </ol> <p>Run application and watch output.</p>
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