Codeigniter中的全局数据数组

Question

I have an array like this

  $meta = array(
       'meta_description' => 'lorem ipsum',
       'meta_keywords' => 'this, is, a, keyword'
  );

If I have this in my controller method, I can pass it to a partial like so: $this->template->set_partial('header', 'layouts/header', $meta) and it passes fine.

I store the meta tags in the database, so I'd ideally like to put it in MY_Controller and populate the array based on the database values for that post's meta tags.

If I move it outside of the controller method, I get Message: Undefined variable: meta as an error.

How can I make it globally available?

Answer 1

I think I figured it out.

I just created a new model for handling meta data, then I insert the following into MY_Controller's construct method:

 $meta = $this->meta_data_model->get_item_meta();

 $this->template->set_partial('header', 'layouts/header', $meta);

This seems to work fine, not sure if there is a better way of doing it.

Answer 2

Anything you want to access globally should be stored in the user session:

$this->load->library('session'); // Unless auto loaded
$this->session->set_userdata('meta', $meta);

Then retrieve it where you need it:

$meta = $this->session->userdata('meta');