Fieldtype::loadPageField() method

Load the given page field from the database table and return the value.

Return NULL if the value is not available.
Return the value as it exists in the database, without further processing.
This is intended only to be called by Page objects on an as-needed basis.
Typically this is only called for fields that don't have 'autojoin' turned on.
Any actual conversion of the value should be handled by the Fieldtype::wakeupValue() method.

Usage

$mixed = $fieldtype->loadPageField(Page $page, Field $field);

Arguments

Name	Type(s)	Description
`page`	Page	Page object to save.
`field`	Field	Field to retrieve from the page.

Return value

mixed null

Hooking Fieldtype::loadPageField(…)

You can add your own hook events that are executed either before or after the Fieldtype::loadPageField(…) method is executed. Examples of both are included below. A good place for hook code such as this is in your /site/ready.php file.

Hooking before

The 'before' hooks are called immediately before each Fieldtype::loadPageField(…) method call is executed. This type of hook is especially useful for modifying arguments before they are sent to the method.

$this->addHookBefore('Fieldtype::loadPageField', function(HookEvent $event) {
  // Get the object the event occurred on, if needed
  $Fieldtype = $event->object;

  // Get values of arguments sent to hook (and optionally modify them)
  $page = $event->arguments(0);
  $field = $event->arguments(1);

  /* Your code here, perhaps modifying arguments */

  // Populate back arguments (if you have modified them)
  $event->arguments(0, $page);
  $event->arguments(1, $field);
});

Hooking after

The 'after' hooks are called immediately after each Fieldtype::loadPageField(…) method call is executed. This type of hook is especially useful for modifying the value that was returned by the method call.

$this->addHookAfter('Fieldtype::loadPageField', function(HookEvent $event) {
  // Get the object the event occurred on, if needed
  $Fieldtype = $event->object;

  // An 'after' hook can retrieve and/or modify the return value
  $return = $event->return;

  // Get values of arguments sent to hook (if needed)
  $page = $event->arguments(0);
  $field = $event->arguments(1);

  /* Your code here, perhaps modifying the return value */

  // Populate back return value, if you have modified it
  $event->return = $return;
});

Fieldtype methods and properties

API reference based on ProcessWire core version 3.0.236