Internal Server Error when using $this->db->insert

Hi guys I have problem with updating my database.

I'm using Codeigniter 3.0

When I copy sample code from doc everything works:

PHP Code:

$data = array(
                    'title' => 'My title',
                    'name' => 'My Name',
                    'date' => 'My date'
            );

            $sql = $this->db->insert('mytable', $data);
            echo $sql; 


But when I'm trying send my array:

PHP Code:

Array(
    [id_store] => 78
    [id_campaigns] => 42
    [cause] => 1
    [name] => sd
    [weight] => 45345
    [contact] => sdfsd
    [phone] => fsdf
    [contacted] => 1
    [added] => 2015-05-21 18:24:03
) 


I always get blank page and Invalid HTTP status code 500

The page is in AngularJS, I geting data from form in JSON format

I my controller I have:

PHP Code:

        // JSON
        $post = file_get_contents('php://input');
        $_POST = json_decode( $post , true ); 


What I'm doing wrong?

Turn up error reporting (to 4) and check the log file it generates in /application/logs.

It could be due to your query failing or something in your code that you aren't showing. Are you using form validation? If so, wiping out POST with a json string probably won't work.