trait ToStringTrait

Same name in other branches
  1. 9 core/lib/Drupal/Component/Utility/ToStringTrait.php \Drupal\Component\Utility\ToStringTrait
  2. 8.9.x core/lib/Drupal/Component/Utility/ToStringTrait.php \Drupal\Component\Utility\ToStringTrait
  3. 11.x core/lib/Drupal/Component/Utility/ToStringTrait.php \Drupal\Component\Utility\ToStringTrait

Wraps __toString in a trait to avoid some fatal errors.

Hierarchy

2 files declare their use of ToStringTrait
DateTimePlus.php in core/lib/Drupal/Component/Datetime/DateTimePlus.php
TranslatableMarkup.php in core/lib/Drupal/Core/StringTranslation/TranslatableMarkup.php

File

core/lib/Drupal/Component/Utility/ToStringTrait.php, line 8

Namespace

Drupal\Component\Utility
View source 
trait ToStringTrait {
    
    /**
     * Implements the magic __toString() method.
     */
    public function __toString() {
        try {
            return (string) $this->render();
        } catch (\Exception $e) {
            // User errors in __toString() methods are considered fatal in the Drupal
            // error handler.
            trigger_error(get_class($e) . ' thrown while calling __toString on a ' . static::class . ' object in ' . $e->getFile() . ' on line ' . $e->getLine() . ': ' . $e->getMessage(), E_USER_ERROR);
            // In case we are using another error handler that did not fatal on the
            // E_USER_ERROR, we terminate execution. However, for test purposes allow
            // a return value.
            return $this->_die();
        }
    }
    
    /**
     * For test purposes, wrap die() in an overridable method.
     */
    protected function _die() {
        die;
    }
    
    /**
     * Renders the object as a string.
     *
     * @return string|object
     *   The rendered string or an object implementing __toString().
     */
    public abstract function render();

}

Members

Title Modifiers Object type Summary Overrides
ToStringTrait::render abstract public function Renders the object as a string. 2
ToStringTrait::_die protected function For test purposes, wrap die() in an overridable method.
ToStringTrait::__toString public function Implements the magic __toString() method.

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