public static function AttributeHelper::attributeExists in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Template/AttributeHelper.php \Drupal\Core\Template\AttributeHelper::attributeExists()

Checks if the given attribute collection has an attribute.

Parameters

string $name: The name of the attribute to check for.

\Drupal\Core\Template\Attribute|array $collection: An Attribute object or an array of attributes.

Return value

bool TRUE if the attribute exists, FALSE otherwise.

Throws

\InvalidArgumentException When the input $collection is neither an Attribute object nor an array.

2 calls to AttributeHelper::attributeExists()

AttributeHelperTest::testAttributeExists in core/tests/Drupal/Tests/Core/Template/AttributeHelperTest.php

@covers ::attributeExists @dataProvider providerTestAttributeExists

template_preprocess_image in core/includes/theme.inc

Prepares variables for image templates.

File

core/lib/Drupal/Core/Template/AttributeHelper.php, line 34

Class

AttributeHelper

Helper class to deal with mixed array and Attribute operations.

Namespace

Drupal\Core\Template

Code

public static function attributeExists($name, $collection) {
  if ($collection instanceof Attribute) {
    return $collection
      ->hasAttribute($name);
  }
  elseif (is_array($collection)) {
    return array_key_exists($name, $collection);
  }
  throw new \InvalidArgumentException('Invalid collection argument');
}