Tutorial Codeigniter #13: Membuat Fitur Pencarian

<?php

class Article_model extends CI_Model
{

	private $_table = 'article';

	public function rules()
	{
		return [
			[
				'field' => 'title',
				'label' => 'Title',
				'rules' => 'required|max_length[128]'
			],
			[
				'field' => 'draft',
				'label' => 'Draft',
				'rules' => 'required|in_list[true,false]'
			],
			[
				'field' => 'content',
				'label' => 'Content',
				'rules' => '' // <-- rules dikosongkan
			]
		];
	}

	public function get()
	{
		$query = $this->db->get($this->_table);
		return $query->result();
	}

	public function count()
	{
		return $this->db->count_all($this->_table);
	}

	public function get_published($limit = null, $offset = null)
	{
		if (!$limit && $offset) {
			$query = $this->db
				->get_where($this->_table, ['draft' => 'FALSE']);
		} else {
			$query =  $this->db
				->get_where($this->_table, ['draft' => 'FALSE'], $limit, $offset);
		}
		return $query->result();
	}

	public function find_by_slug($slug)
	{
		if (!$slug) {
			return;
		}
		$query = $this->db->get_where($this->_table, ['slug' => $slug]);
		return $query->row();
	}

	public function find($id)
	{
		if (!$id) {
			return;
		}

		$query = $this->db->get_where($this->_table, array('id' => $id));
		return $query->row();
	}

	public function search($keyword)
	{
		if(!$keyword){
			return null;
		}
		$this->db->like('title', $keyword);
		$this->db->or_like('content', $keyword);
		$query = $this->db->get($this->_table);
		return $query->result();
	}

	public function insert($article)
	{
		return $this->db->insert($this->_table, $article);
	}

	public function update($article)
	{
		if (!isset($article['id'])) {
			return;
		}

		return $this->db->update($this->_table, $article, ['id' => $article['id']]);
	}

	public function delete($id)
	{
		if (!$id) {
			return;
		}

		return $this->db->delete($this->_table, ['id' => $id]);
	}
}

<?php

class Post extends CI_Controller
{
	public function __construct()
	{
		parent::__construct();
		$this->load->model('article_model');
		$this->load->model('auth_model');
		if(!$this->auth_model->current_user()){
			redirect('auth/login');
		}
	}

	public function index()
	{
		$data['current_user'] = $this->auth_model->current_user();

		$data['articles'] = $this->article_model->get();
		
		$data['keyword'] = $this->input->get('keyword');

		if(!empty($this->input->get('keyword'))){
			$data['articles'] = $this->article_model->search($data['keyword']);
		}
		
		if(count($data['articles']) <= 0 && !$this->input->get('keyword')){
			$this->load->view('admin/post_empty.php', $data);
		} else {
			$this->load->view('admin/post_list.php', $data);
		}
	}

	public function new()
	{
		$data['current_user'] = $this->auth_model->current_user();
		$this->load->library('form_validation');
		if ($this->input->method() === 'post') {
			// Lakukan validasi sebelum menyimpan ke model
			$rules = $this->article_model->rules();
			$this->form_validation->set_rules($rules);

			if($this->form_validation->run() === FALSE){
				return $this->load->view('admin/post_new_form.php', $data);
			}

			// generate unique id and slug
			$id = uniqid('', true);
			$slug = url_title($this->input->post('title'), 'dash', TRUE) . '-' . $id;

			$article = [
				'id' => $id,
				'title' => $this->input->post('title'),
				'slug' => $slug,
				'content' => $this->input->post('content'),
				'draft' => $this->input->post('draft')
			];

			$saved = $this->article_model->insert($article);

			if ($saved) {
				$this->session->set_flashdata('message', 'Article was created');
				return redirect('admin/post');
			}
		}

		$this->load->view('admin/post_new_form.php', $data);
	}

	public function edit($id = null)
	{
		$data['current_user'] = $this->auth_model->current_user();
		$data['article'] = $this->article_model->find($id);
		$this->load->library('form_validation');

		if (!$data['article'] || !$id) {
			show_404();
		}
		
		if ($this->input->method() === 'post') {
			// lakukan validasi data sebelum simpan ke model
			$rules = $this->article_model->rules();
			$this->form_validation->set_rules($rules);

			if($this->form_validation->run() === FALSE){
				return $this->load->view('admin/post_edit_form.php', $data );
			}

			$article = [
				'id' => $id,
				'title' => $this->input->post('title'),
				'content' => $this->input->post('content'),
				'draft' => $this->input->post('draft')
			];
			$updated = $this->article_model->update($article);
			if ($updated) {
				$this->session->set_flashdata('message', 'Article was updated');
				redirect('admin/post');
			}
		}

		$this->load->view('admin/post_edit_form.php', $data);
	}

	public function delete($id = null)
	{
		if (!$id) {
			show_404();
		}

		$deleted = $this->article_model->delete($id);
		if ($deleted) {
			$this->session->set_flashdata('message', 'Article was deleted');
			redirect('admin/post');
		}
	}
}