Drupal 7 custom module load css for specific theme template

Question

I have a custom module that i've created and I have set the theme template like this:

/**
 * Implemtnation of hook_theme()
 */
function custom_slider_theme($existing, $type, $theme, $path) {
    return array(
        'custom_slider' => array(
            'variables' => array('nodes' => NULL),
            'template' => 'custom_slider',
        ),
    );
}

This is all working fine.

What I can't find is how to load a css file for that template so when custom_slider.tpl.php is loaded the relevent css file is loaded. I don't need that css loaded on every page. I would rather call drupal_add_css() only when it's needed.

Any help with this is very much appreciated.

C

Clive · Accepted Answer · 2013-03-30 12:38:46Z

2

You could add it in a preprocess function, e.g.

function custom_slider_preprocess_custom_slider(&$vars) {
  drupal_add_css(drupal_get_path('module', 'custom_slider') . '/file.css');
}

answered Mar 30, 2013 at 12:38

Clive

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5 Comments

Cybercampbell Over a year ago

Thnaks @Clive - But what if I want the module to be self seficient and loads it's own resources? I know how to add it to the .info file of the module but I only want it to load when the templete used in that module is being used.

Clive Over a year ago

Not sure I understand - the above method is exactly how to do that unless I've missed something?

Clive Over a year ago

You can implement a preprocess function for a theme in the same module that defines that theme - could that be the confusion?

Cybercampbell Over a year ago

Sorry for the confusion. Does this function add the css to every page or just the page that uses the template custom_slider.tpl.php which is only called when the url is /mycustomslider

Clive Over a year ago

The CSS will only be added when theme('custom_slider') is called, so it won't be added to any page that doesn't call it

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