Autoloading form_validation library - codeigniter

Question

I am having problem autoloading the form_validation library in Codeigniter. I have a controller Posts with a create function which works great.
public function create(){
$data['title']='New Post';
$this->load->view('templates/header');
$this->load->view('posts/create', $data);
$this->load->view('templates/footer');
}
Now I want to do form validation . Something like this :
public function create(){
$data['title']='New Post';
$this->form_validation->set_rules('title', 'Title','trim|required|min_length[5]|max_length[128]');
$this->form_validation->set_rules('body', 'Blog','trim|required|min_length[5]');
if($this->form_validation->run==FALSE){
$data['errors']=validation_errors();
$this->load->view('templates/header');
$this->load->view('posts/create', $data);
$this->load->view('templates/footer');
}else {
$this->load->view('templates/header');
$this->load->view('posts/success', $data);
$this->load->view('templates/footer');
}
}
For now I am not calling any model to store the data, just showing the success message by loading posts/success view . However , even before I code the create function with the validation(that is the above code) , the moment I add form_validation in the autoload.php (even with the first code) like so :
$autoload['libraries'] = array('database','form_validation');
I am getting the below error :
Message: Undefined property: Post_model::$load
Filename: libraries/Form_validation.php
Line Number: 147
Backtrace:
File: C:\xampp\htdocs\ciblog\index.php Line: 292 Function:
require_once
I do not understand the error as I am not even using the Post_model in the method .
My Post_model.php is :
class Post_model extends CI_Controller {
public function get_post($slug=NULL){
if(!$slug) {
$query = $this->db->get('posts');
return $query->result();
} else {
$this->db->where('slug',$slug);
$query = $this->db->get("posts");
return $query->result();
}
}
}
My complete post controller is this :
<?php
class Posts extends CI_Controller {
public function index(){
$data['title']='Latest Posts';
$posts=$this->post_model->get_post();
$data['posts']=$posts;
$this->load->view('templates/header');
$this->load->view('posts/index',$data);
$this->load->view('templates/footer');
}
public function view($slug){
$posts=$this->post_model->get_post($slug);
if(empty($posts)){
show_404();
} else {
$data['posts']=$posts;
$this->load->view('templates/header');
$this->load->view('posts/view',$data);
$this->load->view('/templates/footer');
}
}
public function create(){
$data['title']='New Post';
$this->form_validation->set_rules('title', 'Title','trim|required|min_length[5]|max_length[128]');
$this->form_validation->set_rules('body', 'Blog','trim|required|min_length[5]');
if($this->form_validation->run()==FALSE){
$data['errors']=validation_errors();
$this->load->view('templates/header');
$this->load->view('posts/create', $data);
$this->load->view('templates/footer');
}else {
$this->load->view('templates/header');
$this->load->view('posts/success', $data);
$this->load->view('templates/footer');
}
}
}
I have autoladed the model which is working .I searched other posts , most were to do with the first letter of the model name being not in caps which is not my case . Could somebody please make me understand whats going wrong ?

Answer 1

You used your model in your controller without loading it, you have to load it first:
$this->load->model('post_model');
Another error here is that model extends CI_Model:
class Post_model extends CI_Model

Answer 2

As the documentation says ref you have to validate like this :
I have seen mistake behind the run() method
Please fix it with :
if ($this->form_validation->run() == FALSE)
Also you can check by loading form_validation library directly by updating your constructor
public function __construct()
{
parent::__construct();
$this->load->library('form_validation');
$this->load->helper('form');
}