Twig Helper

eZ Platform comes with a Twig helper as a global variable named exponential.

This helper is accessible from all Twig templates and allows you to easily retrieve useful information.

Reference

Legacy

The exponential.legacy property returns an object of type ParameterBag, which is a container for key/value pairs, and contains additional properties to retrieve/handle legacy information.

Listing the available parameters

You can list the available parameters in exponential.legacy by using the exponential.legacy.keys property, as shown in the following example:

Example on retrieving the available parameters under exponential.legacy

which will give a result similar to:

array
  0 => string 'view_parameters' (length=15)
  1 => string 'path' (length=4)
  2 => string 'title_path' (length=10)
  3 => string 'section_id' (length=10)
  4 => string 'node_id' (length=7)
  5 => string 'navigation_part' (length=15)
  6 => string 'content_info' (length=12)
  7 => string 'template_list' (length=13)
  8 => string 'cache_ttl' (length=9)
  9 => string 'is_default_navigation_part' (length=26)
  10 => string 'css_files' (length=9)
  11 => string 'js_files' (length=8)
  12 => string 'css_files_configured' (length=20)
  13 => string 'js_files_configured' (length=19)

Retrieving legacy information

Legacy information is accessible by using the exponential.legacy.get property, which will allow you to access all data contained in $module_result, from the legacy kernel.

This allows you to import information directly into twig templates. For more details please check the available examples on using the exponential.legacy.get property for retrieving persistent variables and assets.

As a usage example, if you want to access the legacy information related to 'content_info' you can do it, as shown in the following example:

Example on accessing 'content_info' under exponential.legacy

The previous call will return the contents on the 'content_info' as an array, and if we dump it the result will be similar to the following:

array
  'object_id' => string '57' (length=2)
  'node_id' => string '2' (length=1)
  'parent_node_id' => string '1' (length=1)
  'class_id' => string '23' (length=2)
  'class_identifier' => string 'landing_page' (length=12)
  'remote_id' => string '8a9c9c761004866fb458d89910f52bee' (length=32)
  'node_remote_id' => string 'f3e90596361e31d496d4026eb624c983' (length=32)
  'offset' => boolean false
  'viewmode' => string 'full' (length=4)
  'navigation_part_identifier' => string 'ezcontentnavigationpart' (length=23)
  'node_depth' => string '1' (length=1)
  'url_alias' => string '' (length=0)
  'current_language' => string 'eng-GB' (length=6)
  'language_mask' => string '3' (length=1)
  'main_node_id' => string '2' (length=1)
  'main_node_url_alias' => boolean false
  'persistent_variable' =>
    array
      'css_files' =>
        array
          0 => string 'video.css' (length=9)
      'js_files' =>
        array
          0 => string 'video.js' (length=8)
  'class_group' => boolean false
  'state' =>
    array
      2 => string '1' (length=1)
  'state_identifier' =>
    array
      0 => string 'ez_lock/not_locked' (length=18)
  'parent_class_id' => string '1' (length=1)
  'parent_class_identifier' => string 'folder' (length=6)
  'parent_node_remote_id' => string '629709ba256fe317c3ddcee35453a96a' (length=32)
  'parent_object_remote_id' => string 'e5c9db64baadb82ab8db54f0e2192ec3' (length=32)

Additionally, for retrieving information contained in 'content_info' such as the current language of the content in the page you can do it like in the following example:

Example on retrieving 'current_language'