问在codeigniter中，模型和视图有直接关系

EN

<form method="post">
        <input type="text" name="profession_name" />
        <input type="button" name="submit" value="Add Profession" onClick="add_profession" class="btn btn-success" />
    </form>

<?php 
class Model_model  extends CI_Model{
    function __construct(){
    parent::__construct();  
}
    function insert_data(){
        $data =  array(
            "profession_name" => $_POST['profession_name']
        );  
        $this->db->insert('table_name',$data);
    }   

}?>