function field_valid_language

Ensures that a given language code is valid.

Checks whether the given language is one of the enabled languages. Otherwise, it returns the current, global language; or the site's default language, if the additional parameter $default is TRUE.

Parameters

$langcode: The language code to validate.

$default: Whether to return the default language code or the current language code in case $langcode is invalid.

Return value

A valid language code.

Related topics

Field Language API
Handling of multilingual fields.
3 calls to field_valid_language()
FieldTranslationsTestCase::testFieldFormTranslationRevisions in drupal/modules/field/tests/field.test
Tests field translations when creating a new revision.
field_attach_form in drupal/modules/field/field.attach.inc
Add form elements for all fields for an entity to a form structure.
field_language in drupal/modules/field/field.multilingual.inc
Returns the display language for the fields attached to the given entity.

File

drupal/modules/field/field.multilingual.inc, line 228
Functions implementing Field API multilingual support.

Code

function field_valid_language($langcode, $default = TRUE) {
  $enabled_languages = field_content_languages();
  if (in_array($langcode, $enabled_languages)) {
    return $langcode;
  }
  global $language_content;
  return $default ? language_default('language') : $language_content->language;
}