function show in Drupal 8

Same name and namespace in other branches

1. 7 includes/common.inc \show()
2. 9 core/includes/common.inc \show()
3. 10 core/includes/common.inc \show()

Shows a hidden element for later rendering.

You can also use render($element), which shows the element while rendering it.

The first time render() or drupal_render() is called on an element tree, as each element in the tree is rendered, it is marked with a #printed flag and the rendered children of the element are cached. Subsequent calls to render() or drupal_render() will not traverse the child tree of this element again: they will just use the cached children. So if you want to show an element, be sure to call show() on the element before its parent tree is rendered for the first time, as it will have no effect on subsequent renderings of the parent tree.

Parameters

$element: The element to be shown.

Return value

The element.

See also

render()

hide()

2 calls to show()

render in core/includes/common.inc

Renders an element.

template_preprocess_file_widget_multiple in core/modules/file/file.field.inc

Prepares variables for multi file form widget templates.

8 string references to 'show'

Node::buildFilters in core/modules/node/src/Plugin/views/wizard/Node.php

Overrides Drupal\views\Plugin\views\wizard\WizardPluginBase::buildFilters().

Node::defaultDisplayFiltersUser in core/modules/node/src/Plugin/views/wizard/Node.php

Retrieves filter information based on user input for the default display.

NodeRevision::defaultDisplayFiltersUser in core/modules/node/src/Plugin/views/wizard/NodeRevision.php

Retrieves filter information based on user input for the default display.

ViewAddForm::form in core/modules/views_ui/src/ViewAddForm.php

Gets the actual form array to be built.

ViewAddForm::validateForm in core/modules/views_ui/src/ViewAddForm.php

Form validation handler.

... See full list

File

core/includes/common.inc, line 934

Common functions that many Drupal modules will need to reference.

Code

function show(&$element) {
  $element['#printed'] = FALSE;
  return $element;
}