Question

我创建了一个用于获取数据然后编写代码的模型

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);
    }
}

由于只需要编写一次，如何在构造函数的控制器中调用模型？

Answer 1

要实现您想要的目标，可以执行以下操作...

您需要使$ data数组成为类的属性
在整个类中引用新的$ this->数据
您需要将调用移至构造函数中的模型。

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);
    }
}

Answer 2

蒂姆的方法只能找到，但我倾向于这样做。

class Quiz extends CI_Controller {

    public $courses; // can also be set to private

    public function __construct(){
        parent::__construct();
        $this->load->model('Mastermodel','',TRUE);
        $this->courses = $this->Mastermodel->get_courses();
    }
    public function index()
    {
        $data['courses'] = $this->courses;
        $data['view_file'] = "content/quiz/quiz_list";
        $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

2 个答案: