add meta tag to head in drupal 8

Question

Iam new to drupal 8 and want to add meta tag to my drupal 8 site.

I had done this:

1. added below code in my THEME.theme file

   /**
    * Implements hook_page_attachments_alter().
    *
    * Include meta tags and fonts using attachment method.
    */
   function bartik_page_attachments_alter(array &$page) {
    // echo "<pre>"; echo "BEFORE"; print_r($page);
     // Include fonts.
     $font_attributes = array(
       'rel' => 'stylesheet',
       'type' => 'text/css',
       'href' => 'https://fonts.googleapis.com/css?family=Lato:400,100,100italic,300,300italic,400italic,700',
     );
   
     $page['#attached']['html_head_link'][] = array($font_attributes);
   
     // Set up meta tags.
     // Modern IE & chrome-frame rendering engine tag.
     $rendering_meta = array(
       '#type' => 'html_tag',
       '#tag' => 'meta',
       '#attributes' => array(
         'name' => 'SKYPE_TOOLBAR',
         'content' => 'SKYPE_TOOLBAR_PARSER_COMPATIBLE',
       ),
     );
     $page['#attached']['html_head'][] = [$rendering_meta, 'rendering_meta'];
    //echo "<pre>"; echo "AFTER"; print_r($page);
   }
   

   2. cleared cashe.

This code just attaches the meta tag for login page i.e in my case is:

mysite.com/user/login

Where I am doing wrong? What should I do to attach it for whole site

Answer 1

What I did to add meta tag to head was:

function theme_preprocess_html(&$variables) {

  $xuacompatible = [
    '#tag' => 'meta',
    '#attributes' => [
      'http-equiv' => 'x-ua-compatible',
      'content' => 'ie=edge',
    ],
  ];


  $variables['page']['#attached']['html_head'][] = [$xuacompatible, 'x-ua-compatible'];
}; 

It results in

<meta http-equiv="x-ua-compatible" content="ie=edge">

Maybe not the best solution but it works :)

Good luck