codeigniter_test/application/models/M_admin.php

<?php
class M_admin extends CI_Model{
 
    function get_post_all()
    {
        $query=$this->db->query("SELECT * FROM post ORDER BY id DESC");
        return $query->result();
    }
	
	function save_post()
	{
		$simpan_data=array(
            'post_title'  => $this->input->post('title'),
            'post_content'      => $this->input->post('content'),
       );
        $simpan = $this->db->insert('post', $simpan_data);
        return $simpan;
	}
	
	function edit_post($id)
	{
		$q="SELECT * FROM  post WHERE id='$id'";
        $query=$this->db->query($q);
        return $query->row();
	}
	
	function save_edit_post($id, $judul, $isi)
    {
        $data = array(
            'id'        => $id,
            'post_title'			 => $judul,
            'post_content'       	 => $isi
        );
        $this->db->where('id', $id);
        $this->db->update('post', $data);    
    }
	
	function delete_post($id)
    {
        $query=$this->db->query("DELETE FROM post WHERE id='$id'");
    }
}