Get the value of a field inside a paragraph field in hook_preprocess_field

Question

I'm usign the module Paragraphs for Drupal 8. I need to print the raw value of a paragraph field in the twig template, so I'm trying to access to the value of the field in the hook_preprocess_field, but I don't know how to access the value in $variables.

Any idea?

Answer 1

You can use preprocess field hook which is supported in drupal 8 also . Example below:

function example_preprocess_field(&$variables) {
    if (($variables['element']['#field_name'] == 'example')) {
    //get the value of the field
    dsm($variables);
   print_r($variables);
    // add a class to the field        
    $variables['attributes']['class'] = [
     'example'
      ];
  }
}

Answer 2

To get at the value of a paragraphs field for manipulation etc you can use template_preprocess_paragraph(&$variables) or more specifically template_preprocess_paragraph__PARAGRAPH_TYPE(&$variables)

Answer 3

One Good solution for that is to first install Devel module and then you can use dsm function.

this function is easy to use just write dsm($variables) and it will print a hierarchical form of element.

Using that you will know how to have access to your desired values and fields.