Codeigniter 2.1 - 结合来自 __construct 和被调用函数的 $data

Question

我有几个 $data 在控制器中的几乎所有函数中都被调用。有没有办法在 __construct 函数中创建这个 $data 并将它们与被调用函数中的 $data 结合起来？示例：

function __construct() {
        parent::__construct();

        $this->load->model('ad_model', 'mgl');
        $this->load->model('global_info_model', 'gi');
        $this->load->model('user_model', 'um');        
        $this->load->library('global_functions');
        $this->css = "<link rel=\"stylesheet\" href=\" " . CSS . "mali_oglasi.css\">";
        $this->gi_cat = $this->gi->gi_get_category();
        $this->gi_loc = $this->gi->gi_get_location();        
        $this->gi_type = $this->gi->gi_get_type();       
        }

    function index() {     
        $count = $this->db->count_all('ad');        
        $data['pagination_links'] = $this->global_functions->global_pagination('mali_oglasi', $count, 2);

        $data['title'] = "Mali Oglasi | 010";
        $data['oglasi'] =  $this->mgl->mgl_get_all_home(10);
        $data['loc'] = $this->gi_loc;
        $data['cat'] = $this->gi_cat;
        $data['stylesheet'] = $this->css;
        $data['main_content'] = 'mali_oglasi';

    $this->load->view('template',$data);
    }

如果我想放 $data['loc'], $data['cat'] 和 $data['stylesheet'] 在 __construct 我将不得不在 $this->load->view('template',$data);

有没有办法把这两者结合起来？

Answer 1

为你的控制器添加一个私有成员，并根据需要在构造函数中设置它：

private $data;

function __construct() {
    ...
    $this->data = array(...);
    ...
}

然后您可以在同一个控制器类中的所有控制器操作中访问此私有成员。

您可以使用array union operator (+)^Docs 合并两个数组：

$data = $this->data + $data;

另请参阅：Properties^Docs

Answer 2

当然，你可以这样做，

class ControllerName extends CI_Controller {

    private $_data = array();

    function __construct()
    {
        $this->_data['loc'] = this->gi_loc;
        $this->_data['cat'] = this->gi_cat;
        $this->_data['stylesheet'] = this->css;
    }

    function index()
    {
        // Your data

        // Merge them before the $this->load->view();
        $data = array_merge($this->_data, $data);
    }
}