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php - 如何在构造函数的控制器中调用模型，因为我只需要编写一次

问题描述

我创建了一个用于获取数据的模型，然后编写代码

模型..

 function get_courses(){
        $this->db->from(TABLE_COURSE);
        $this->db->where('name !=', '');
        $query = $this->db->get();
        $result = '';
        if($query){
            if($query->num_rows() > 0)
                $result = $query->result();
        }
        return $result;
    }

控制器

defined('BASEPATH') OR exit('No direct script access allowed');
class Quiz extends CI_Controller {
    public function __construct(){
        parent::__construct();
        $this->load->model('Mastermodel','',TRUE);
    }
    public function index()
    {
        $data['courses'] = $this->Mastermodel->get_courses();
        $data['view_file'] = "content/quiz/quiz_list";
        $this->load->view('layout/dashboard/layout', $data);
    }
    public function quiz_of_day()
    {
        $data['courses'] = $this->Mastermodel->get_courses();
        $data['view_file'] = "content/quiz/quiz_of_day";
        $this->load->view('layout/dashboard/layout', $data);
    }
    public function quiz_edit()
    {
        $data['courses'] = $this->Mastermodel->get_courses();
        $data['view_file'] = "content/quiz/quiz_edit";
        $this->load->view('layout/dashboard/layout', $data);
    }
}

如何在构造函数的控制器中调用模型，因为我只需要编写一次？

标签： phpcodeigniter

解决方案

要实现您想要的，您可以执行以下操作...

  1. 您需要使 $data 数组成为该类的属性

  2. 在整个类中引用新的 $this->data

  3. 您需要将调用移动到构造函数中的模型。

所以你得到的是这个

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Quiz extends CI_Controller {

    protected $data = array(); // Old school definition of an array (instead of [])for safety

    public function __construct() {
        parent::__construct();
        $this->load->model('Mastermodel', '', TRUE);

        $this->data['courses'] = $this->Mastermodel->get_courses();
    }

    public function index() {

        $this->data['view_file'] = "content/quiz/quiz_list";
        $this->load->view('layout/dashboard/layout', $this->data);
    }

    public function quiz_of_day() {
        $this->data['view_file'] = "content/quiz/quiz_of_day";
        $this->load->view('layout/dashboard/layout', $this->data);
    }

    public function quiz_edit() {
        $this->data['view_file'] = "content/quiz/quiz_edit";
        $this->load->view('layout/dashboard/layout', $this->data);
    }
}

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