interface RenderCallbackInterface in Drupal 9

Indicates all public methods are safe to use in render callbacks.

This should only be used when all public methods on the class are supposed to used as render callbacks or the class implements ElementInterface. If this is not the case then use TrustedCallbackInterface instead.

Hierarchy

• interface \Drupal\Core\Render\Element\RenderCallbackInterface

See also

\Drupal\Core\Render\Element\ElementInterface

\Drupal\Core\Security\TrustedCallbackInterface

\Drupal\Core\Render\Renderer::doCallback()

4 files declare their use of RenderCallbackInterface

BlockRenderAlterContent.php in core/modules/block/tests/modules/block_test/src/BlockRenderAlterContent.php

ColorSystemBrandingBlockAlter.php in core/modules/color/src/ColorSystemBrandingBlockAlter.php

HistoryRenderCallback.php in core/modules/history/src/HistoryRenderCallback.php

Renderer.php in core/lib/Drupal/Core/Render/Renderer.php

File

core/lib/Drupal/Core/Render/Element/RenderCallbackInterface.php, line 16

Namespace

Drupal\Core\Render\Element

interface RenderCallbackInterface {

}