Argthtjtr

How can I find the 'base hook' to override a template file using a custom module?

'node' and 'user' are pretty straightforward, but others can be a little more elusive.

Example code...

MYMODULE.module:

/**

 ** Implements hook_theme().

 **/

function MYMODULE_theme($existing, $type, $theme, $path) {

  return [

    'username' => [

      'template' => 'username',

      'base hook' => 'how do you get this?',

    ],

  ];

}

Look into the *.module file where the base hook is defined, in this case the User module. The base hook is the key of the template definition:

user.module:

/**

 * Implements hook_theme().

 */



function user_theme() {

  return [

    ... 

    'username' => [

      'variables' => ['account' => NULL, 'attributes' => , 'link_options' => ],

    ],

  ];

}

Then in your *.module file

mymodule.module

/**

 * Implements hook_theme().

 */

function mymodule_theme() {

  return [

    'username__mymodule_template' => [

      'base hook' => 'username',

    ],

  ];

}

Start the name of your own hook with the base hook and double underscores.