public TwigExtension::escapeFilter(\Twig_Environment $env, $arg, $strategy = 'html', $charset = NULL, $autoescape = FALSE)
Overrides twig_escape_filter().
Replacement function for Twig's escape filter.
Note: This function should be kept in sync with theme_render_and_autoescape().
@todo Refactor this to keep it in sync with theme_render_and_autoescape() in https://www.drupal.org/node/2575065
Parameters
\Twig_Environment $env: A Twig_Environment instance.
mixed $arg: The value to be escaped.
string $strategy: The escaping strategy. Defaults to 'html'.
string $charset: The charset.
bool $autoescape: Whether the function is called by the auto-escaping feature (TRUE) or by the developer (FALSE).
Return value
string|null The escaped, rendered output, or NULL if there is no valid output.
Throws
\Exception When $arg is passed as an object which does not implement __toString(), RenderableInterface or toString().
File
- core/lib/Drupal/Core/Template/TwigExtension.php, line 412
Class
- TwigExtension
- A class providing Drupal Twig extensions.
Namespace
Drupal\Core\Template
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | public function escapeFilter(\Twig_Environment $env, $arg, $strategy = 'html', $charset = NULL, $autoescape = FALSE) { // Check for a numeric zero int or float. if ($arg === 0 || $arg === 0.0) { return 0; } // Return early for NULL and empty arrays. if ($arg == NULL) { return NULL; } $this->bubbleArgMetadata($arg); // Keep Twig_Markup objects intact to support autoescaping. if ($autoescape && ($arg instanceof \Twig_Markup || $arg instanceof MarkupInterface)) { return $arg; } $return = NULL; if (is_scalar($arg)) { $return = (string) $arg; } elseif (is_object($arg)) { if ($arg instanceof RenderableInterface) { $arg = $arg->toRenderable(); } elseif (method_exists($arg, '__toString')) { $return = (string) $arg; } // You can't throw exceptions in the magic PHP __toString() methods, see // http://php.net/manual/language.oop5.magic.php#object.tostring so // we also support a toString method. elseif (method_exists($arg, 'toString')) { $return = $arg->toString(); } else { throw new \Exception('Object of type ' . get_class($arg) . ' cannot be printed.'); } } // We have a string or an object converted to a string: Autoescape it! if (isset($return)) { if ($autoescape && $return instanceof MarkupInterface) { return $return; } // Drupal only supports the HTML escaping strategy, so provide a // fallback for other strategies. if ($strategy == 'html') { return Html::escape($return); } return twig_escape_filter($env, $return, $strategy, $charset, $autoescape); } // This is a normal render array, which is safe by definition, with // special simple cases already handled. // Early return if this element was pre-rendered (no need to re-render). if (isset($arg['#printed']) && $arg['#printed'] == TRUE && isset($arg['#markup']) && strlen($arg['#markup']) > 0) { return $arg['#markup']; } $arg['#printed'] = FALSE; return $this->renderer->render($arg);} |
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