Collects the available languages for the given entity type and field.

If the given field has language support enabled, an array of available languages will be returned, otherwise only LANGUAGE_NONE will be returned. Since the default value for a 'translatable' entity property is FALSE, we ensure that only entities that are able to handle translations actually get translatable fields.

Parameters

$entity_type: The type of the entity the field is attached to, e.g. 'node' or 'user'.

$field: A field structure.

Return value

An array of valid language codes.

Related topics

12 calls to field_available_languages()

FieldTranslationsTestCase::testFieldAvailableLanguages in modules/field/tests/field.test

Ensures that only valid values are returned by field_available_languages().

FieldTranslationsTestCase::testFieldFormTranslationRevisions in modules/field/tests/field.test

Tests field translations when creating a new revision.

FieldTranslationsTestCase::testFieldInvoke in modules/field/tests/field.test

Test the multilanguage logic of _field_invoke().

FieldTranslationsTestCase::testFieldInvokeMultiple in modules/field/tests/field.test

Test the multilanguage logic of _field_invoke_multiple().

FieldTranslationsTestCase::testTranslatableFieldSaveLoad in modules/field/tests/field.test

Test translatable fields storage/retrieval.

... See full list

1 string reference to 'field_available_languages'

field_info_cache_clear in modules/field/field.info.inc

Clears the field info cache without clearing the field data cache.

File

modules/field/field.multilingual.inc, line 89

Code

function field_available_languages($entity_type, $field) {
    static $drupal_static_fast;
    if (!isset($drupal_static_fast)) {
        $drupal_static_fast['field_languages'] =& drupal_static(__FUNCTION__);
    }
    $field_languages =& $drupal_static_fast['field_languages'];
    $field_name = $field['field_name'];
    if (!isset($field_languages[$entity_type][$field_name])) {
        // If the field has language support enabled we retrieve an (alterable) list
        // of enabled languages, otherwise we return just LANGUAGE_NONE.
        if (field_is_translatable($entity_type, $field)) {
            $languages = field_content_languages();
            // Let other modules alter the available languages.
            $context = array(
                'entity_type' => $entity_type,
                'field' => $field,
            );
            drupal_alter('field_available_languages', $languages, $context);
            $field_languages[$entity_type][$field_name] = $languages;
        }
        else {
            $field_languages[$entity_type][$field_name] = array(
                LANGUAGE_NONE,
            );
        }
    }
    return $field_languages[$entity_type][$field_name];
}

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