Add html class to body

Question

I've got a block created with views, which displaying a slider. The slider is created as an unpublished content type with two field collections:

Settings[one value]:

• selectors type: thumbs or bullets
• slider class: fixed position, faded etc.

Slider content[multiple values]:

• slide class
• content class
• Image
• content

I do not use views slideshow module
I'm using views-view--slider-block.tpl.php file to customize the output

All works, but I have stuck with one specific setting "fixed position" - this setting should add to html a special class, which I guess can be added only by preprocess_html function:

function MYTHEME_preprocess_html(&$variables) { 
    if ( SLIDER HAS "fixed" SETTING ){
        $variables['classes_array'][] = 'slider_fixed';
    }
}

the problem is:

1. how to compose the if statement?
2. Did I have to load $view object which allows me to check what setting is used?

I'm looking for the solution which has the lowest influence on the performance.

any suggestions?

Answer 1

The Context API allow to pass a variable from view.tpl to template.php file

Example:

In view.tpl file :

context_set('slider_settings', 'slider_class', 'fixed_position');

In theme template file :

function MYTHEME_preprocess_html(&$variables) {

$slider_class = context_get('slider_settings', 'slider_class');
if ($slider_class == 'fixed_position'){
    $variables['classes_array'][] = 'slider_fixed';
}

}

It is an aswer for my own question, because I found a solution by myself, and it might be useful for someone I think..