How to remove theme from a preprocess function?
Removing theme() call from a preprocess function: Removing drupal_render() from a preprocess function is just a matter of removing the call: Common is that drupal_render() was called when adding to table data.
How to use preprocess function in Twig template?
Calling these functions in the Twig template rather than the preprocess function can cut down on function calls since variables passed to the template might not get printed in the template at all. In the preprocess function: $variables[‘no_content_text’] = t(‘You have not created any content types yet.
What’s the best way to preprocess an element?
Preprocess everything into separate variables, and pass those into the template. You may need to unset the things you render into variables from the whole element (in this case form) before rendering the rest. Print the content exactly as intended into the template.
When to remove Drupal _ render from a preprocess function?
Removing drupal_render() from a preprocess function is just a matter of removing the call: Common is that drupal_render() was called when adding to table data. While render arrays provide an addressable, alterable structure for data all the way through to the template, not all variables require render arrays.
Do you call Drupal _ render ( ) in twig?
Twig renders everything automatically so there is no need to call drupal_render() or theme() within a preprocess function. Instead, render arrays should be passed to the template since this allows for much more customization than an already-rendered HTML string. Removing theme() call from a preprocess function:
When to use the preprocess function in Drupal?
Adds a default set of helper variables for preprocessors and templates. This function is called for theme hooks implemented as templates only, not for theme hooks implemented as functions. This preprocess function is the first in the sequence of preprocessing functions that are called when preparing variables for a template.
How to preprocesse attributes in a.theme file?
You could inspect the $variables object with a condition to determine which menu you are working with. The elements within $variables become available in twig after theme Pre-Processing. So now to extend our example, let’s assume we want to add the class “my-main-menu” to the main menu of your site.