Error 404 on delete row codeigniter 2 - codeigniter

Question

im deleting a row in coneigniter2 but it takes me to 404 page
(The page you requested was not found.)
this is my code
Controler Post
class Posts extends CI_Controller{
public function index(){
$data['title'] = 'Ultimos Post';
$data['posts'] = $this->Post_model->get_posts();
$this->load->view('templates/header');
$this->load->view('posts/index',$data);
$this->load->view('templates/footer');
}
...
public function delete($id){
//apagar post pelo id
$this->Post_Model->delete_post($id);
redirect('posts');
}}
Post Model
class Post_model extends Ci_Model{
...
public function delete_post($id) {
$this->db->where('id',$id);
$this->db->delete('posts');
}}
In the View.php
<?php echo form_open('/posts/delete/'.$post['id']);?>
<input type="submit" value="Delete" class="btn btn-danger" name="delete">
Routes.php
$route['posts/create'] = 'posts/create';
$route['posts/(:any)'] = 'posts/view/$1';
$route['posts'] = 'posts/index';
$route['default_controller'] = "pages/view";
$route['(:any)'] = 'pages/view/$1';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;

Answer 1

Replace this code
Controller
class Posts extends CI_Controller{
...
public function delete(){
$id = $this->input->post('id');
$this->Post_Model->delete_post($id);
redirect('posts');
}
}
Model
class Post_model extends Ci_Model{
...
public function delete_post($id) {
$this->db->where('id',$id);
$this->db->delete('posts');
}
}
View
<?php echo form_open('/posts/delete'); ?>
<input type="hidden" name="id" value="<?php echo $post['id']; ?>" />
<input type="submit" value="Delete" class="btn btn-danger" name="delete">
</form>

Answer 2

After deleting your redirecting its on Posts,
Which calling the index function of Posts controller .
The problem in you Posts controller index method , Please
share that method or check it yourself .

Answer 3

Based on your config, posts/delete/2 route to posts/view/delete/2. Change your routes config to following code:
$route['posts/create'] = 'posts/create';
$route['posts/delete/(:num)'] = 'posts/delete/$1';
$route['posts/(:any)'] = 'posts/view/$1';
$route['posts'] = 'posts/index';
$route['default_controller'] = "pages/view";
$route['(:any)'] = 'pages/view/$1';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;

Answer 4

Solved by doing this on the controller and Route
Controller
class Posts extends CI_Controller{
...
public function delete(){
$id = $this->uri->segment(3);
$this->Post_model->delete_post($id);
redirect('posts');
}
}
Route.php
$route['posts/delete/(:num)'] = 'posts/delete/$1'