Codeigniter + Angular Js: How to receive JSON data

This is the situation: I have a simple app made in Angular JS that comunicate with the server through an API made in codeigniter. There is a login system in the app. When the user enter email and password, this data are sent to the server, if the email exist and the password match, it return true. I have made many attempts but not figure out how can i do this properly. This is the code: The form: ``` <form role="form" method="post" novalidate ng-submit="submitForm()"> <div class="form-group"> <label for="exampleInputEmail1">Email address</label> <input type="email" class="form-control" name="email" ng-model="user.name" placeholder="Enter email"> </div> <div class="form-group"> <label for="exampleInputPassword1">Password</label> <input type="password" class="form-control" name="password" ng-model="user.password" placeholder="Password"> </div> <button type="submit" class="btn btn-default">Submit</button> </form> ``` This is the Angular js controller: ``` $scope.authorized = false; $scope.user = {}; $scope.submitForm = function() { console.log("posting data...."); $http({ method : 'POST', url : 'http://127.0.0.1/api/main/login', headers: {'Content-Type': 'application/json'}, data : JSON.stringify({email:$scope.user.email, password:$scope.user.password}) }).success(function(data) { console.log(data); $scope.authorized = data; if ($scope.authorized) { $location.path("memberArea"); }; }); } ``` In the codeigniter method have tried many things. Right now there is just this: ``` function login() { print json_encode($_POST); } ``` But i don't know if can receive the data into the $_POST because it seems to be empty. So the question is: How can i receive data in the codeigniter method? Is better to send as JSON and then json_decode? I have also tried json_decode($_POST, true); But was null. But if the data are not in $_POST where are? I am little confused.. Thank you for help! EDIT: Thanks guys for reply. That was one thing that have tried. But somehow is not working. Now for example the method is like this: ``` function login() { $email = $this->input->post('email'); var_dump($email); print json_encode($email); } ``` But what is returned is a boolean false.