Submit AngularJS form with CodeIgniter

Let me preface this by saying I'm new to AngularJS & CodeIgniter. Trying to create a single page app. In the center it displays news stories. On the side is a form to submit new stories. I'm to the point where the stories display fine from the DB. But when I try to create new stories from the form on the side, it enters 0 into the DB. I assume I have an issue with my function in the model. And it's probably as basic as not having the information encoded correctly to pass between MVC.

index.php

<div class="span2" ng-controller="NewStoryCtrl">
  <h4>New Story</h4>
  <form name="newStory">
      <label for="title">Title: </label>
      <input type="text" name ="title" ng-model="news.title" required>
      <label for="text">Text: </label>
      <textarea type="text" name="text" ng-model="news.text"required></textarea>
      <button ng-click="createNews()">Submit</button>
</form>

controller.js

function NewStoryCtrl($scope, $http) {
$scope.news = {title:$scope.title, text:$scope.text};
$scope.createNews = function(){
    $http.post('/ci/index.php/news/create/',$scope.news);
};}

news.php (controller)

public function create() {
    $this->news_model->set_news();
}

news_model.php (model)

public function set_news() {
$this->load->helper('url');

$slug = url_title($this->input->post('title'), 'dash', TRUE);

$data = array(
    'title' => $this->input->post('title'),
    'slug' => $slug,
    'time' => time(),
    'text' => $this->input->post('text')
);

return $this->db->insert('news', $data);
}

The stuff in the model is leftover from my initial CI news tutorial. That's why I assume the error is here. What's the best way to pass the information from the controllers.js to the model?

As expected, my issue was with not getting the right type of data. Controller was expecting a variable, but in Angular controller I was passing it as JSON. I hadn't ever gone through decoding.

news.php (controller)

public function create() {
   $data = json_decode(file_get_contents('php://input'), TRUE);
   $this->news_model->set_news($data);
}

And then in the model, I just needed to pass it as a parameter to set_news(). I ended up changing some variable names, just for personal clarification.

*news_model.php*

public function set_news($data) {
    $this->load->helper('url');
    $slug = url_title($data['title'], 'dash', TRUE);

    $retval = array(
        'title' => $data['title'],
        'slug' => $slug,
        'time' => time(),
        'text' => $data['text']
    );

    return $this->db->insert('news', $retval);
}

I haven't used Angular.js, but your data format is probably correct. For example, Backbone sends a single $_POST variable called model with json encoded data, as I have used it.

It is imperative that you use Firebug, Webdev or other tools to see what is going on when you try to do AJAX work like this; otherwise you will go crazy . Look at the variable being sent to your backend - it is probably described, an encoded single var you will need to collect, json_decode, CLEAN & VALIDATE and then use.