CI框架擴展系統類庫

CI框架不支持像yii2框架那樣，能夠直接在controllers下建立CommonController並繼承父類，那麼咱們想要作登陸控制或權限控制時，直接在父類控制器操做是不合理的。 這時比較方便的方法就是擴展父類的CI_Controller.

一，建立自定義的父類控制器

在core目錄下建立一個自定義類,以MY_爲前綴，如MY_Controller,注意這個前綴不能隨意填寫，受到config.php中配置的約束，並讓MY_Controller繼承CI_Controller

<?php
 
 
class MY_Controller extends CI_Controller {
 
    /**
     * 後臺登陸控制
     * MY_Controller constructor.
     */
    public function __construct()
    {
        parent::__construct();
        $this->load->library('session');
        if (!isset($this->session->user/isLogin)) {
            redirect('login/index');
        }
    }

    public function ajaxReturn($arr) {
		echo json_encode($arr);
		die;
	}
}

二，建立控制器繼承自定義父類

<?php
class admin extends My_Controller {

	public function index() {

		$this->load->view("public/title");
		$this->load->view("public/menu");
		$this->load->view("admin");
	}

	public function shopList() {
		$result = $this->db->select('*')->from('shop_list')->get()->result_array();

		$data = [];
		$data['result'] = $result;
		$this->load->view("public/title");
		$this->load->view("public/menu");
		$this->load->view("shopList", $data);
	}

	public function addshop() {
		if ($this->input->post()) {
			$data = [];
			$data['name'] = $this->input->post("name");
			$data['price'] = number_format($this->input->post("price"), 2);
			$data['sb'] = $this->input->post("sb");
			$data['img_url'] = $this->input->post("img_url");
			$data['content'] = htmlspecialchars($this->input->post("content"));
			$data['content2'] = htmlspecialchars($this->input->post("content2"));
			$data['content3'] = htmlspecialchars($this->input->post("content3"));
			$data['create_time'] = date("Y-m-d H:i:s", time());
			$this->db->insert("shop_list", $data);

			$this->ajaxReturn(['status' => 1, 'info' => '上傳成功']);
		}


		$this->load->view("public/title");
		$this->load->view("public/menu");
		$this->load->view("shopAdd");
	}
}