Fieldtype::createField() method

Create a new field table in the database.

This method should execute the SQL query necessary to create $field->table It should throw a WireException if failure occurs. Most Fieldtype modules use this built-in implementation.

Usage

$bool = $fieldtype->createField(Field $field);

Arguments

NameType(s)Description
fieldField

Return value

bool

Exceptions

Method can throw exceptions on error:

  • WireException


Hooking Fieldtype::createField(…)

You can add your own hook events that are executed either before or after the Fieldtype::createField(…) 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::createField(…) method call is executed. This type of hook is especially useful for modifying arguments before they are sent to the method.

$this->addHookBefore('Fieldtype::createField', 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)
  $field = $event->arguments(0);

  /* Your code here, perhaps modifying arguments */

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

Hooking after

The 'after' hooks are called immediately after each Fieldtype::createField(…) 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::createField', 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)
  $field = $event->arguments(0);

  /* 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 3.0.148

Twitter updates

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Latest news

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    This week we’ve got a few new and interesting core updates in progress, though none quite ready to release just yet. So rather than releasing version 3.0.154 today, I thought we'd instead take a brief look at what’s coming over the next few weeks. This post covers all the details.
    Blog / 3 April 2020
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