class Twig_Node_Expression_Filter_Default

Returns the value or the default value when it is undefined or empty.

<pre> {{ var.foo|default('foo item on var is not defined') }} </pre>

@package twig @author Fabien Potencier <fabien@symfony.com>

Hierarchy

Expanded class hierarchy of Twig_Node_Expression_Filter_Default

1 string reference to 'Twig_Node_Expression_Filter_Default'
Twig_Extension_Core::getFilters in drupal/core/vendor/twig/twig/lib/Twig/Extension/Core.php
Returns a list of filters to add to the existing list.

File

drupal/core/vendor/twig/twig/lib/Twig/Node/Expression/Filter/Default.php, line 22

View source
class Twig_Node_Expression_Filter_Default extends Twig_Node_Expression_Filter {
  public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null) {
    $default = new Twig_Node_Expression_Filter($node, new Twig_Node_Expression_Constant('_default', $node
      ->getLine()), $arguments, $node
      ->getLine());
    if ('default' === $filterName
      ->getAttribute('value') && ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr)) {
      $test = new Twig_Node_Expression_Test_Defined(clone $node, 'defined', new Twig_Node(), $node
        ->getLine());
      $false = count($arguments) ? $arguments
        ->getNode(0) : new Twig_Node_Expression_Constant('', $node
        ->getLine());
      $node = new Twig_Node_Expression_Conditional($test, $default, $false, $node
        ->getLine());
    }
    else {
      $node = $default;
    }
    parent::__construct($node, $filterName, $arguments, $lineno, $tag);
  }
  public function compile(Twig_Compiler $compiler) {
    $compiler
      ->subcompile($this
      ->getNode('node'));
  }

}

Members

Namesort descending Modifiers Type Description Overrides
Twig_Node::$attributes protected property
Twig_Node::$lineno protected property
Twig_Node::$nodes protected property
Twig_Node::$tag protected property
Twig_Node::count public function
Twig_Node::getAttribute public function Gets an attribute.
Twig_Node::getIterator public function
Twig_Node::getLine public function Overrides Twig_NodeInterface::getLine
Twig_Node::getNode public function Gets a node by name.
Twig_Node::getNodeTag public function Overrides Twig_NodeInterface::getNodeTag
Twig_Node::hasAttribute public function Returns true if the attribute is defined.
Twig_Node::hasNode public function Returns true if the node with the given identifier exists.
Twig_Node::removeAttribute public function Removes an attribute.
Twig_Node::removeNode public function Removes a node by name.
Twig_Node::setAttribute public function Sets an attribute.
Twig_Node::setNode public function Sets a node.
Twig_Node::toXml public function
Twig_Node::__toString public function
Twig_Node_Expression_Filter::compileFilter protected function
Twig_Node_Expression_Filter_Default::compile public function Compiles the node to PHP. Overrides Twig_Node_Expression_Filter::compile
Twig_Node_Expression_Filter_Default::__construct public function Constructor. Overrides Twig_Node_Expression_Filter::__construct