144 lines
4.5 KiB
PHP
144 lines
4.5 KiB
PHP
<?php
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/**
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* @file
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* Hooks provided by the Field UI module.
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*/
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/**
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* @addtogroup field_types
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* @{
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*/
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/**
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* Add settings to a field settings form.
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*
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* Invoked from field_ui_field_settings_form() to allow the module defining the
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* field to add global settings (i.e. settings that do not depend on the bundle
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* or instance) to the field settings form. If the field already has data, only
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* include settings that are safe to change.
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*
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* @todo: Only the field type module knows which settings will affect the
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* field's schema, but only the field storage module knows what schema
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* changes are permitted once a field already has data. Probably we need an
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* easy way for a field type module to ask whether an update to a new schema
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* will be allowed without having to build up a fake $prior_field structure
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* for hook_field_update_forbid().
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*
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* @param $field
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* The field structure being configured.
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* @param $instance
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* The instance structure being configured.
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* @param $has_data
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* TRUE if the field already has data, FALSE if not.
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*
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* @return
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* The form definition for the field settings.
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*/
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function hook_field_settings_form($field, $instance, $has_data) {
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$settings = $field['settings'];
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$form['max_length'] = array(
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'#type' => 'number',
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'#title' => t('Maximum length'),
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'#default_value' => $settings['max_length'],
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'#required' => FALSE,
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'#min' => 1,
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'#description' => t('The maximum length of the field in characters. Leave blank for an unlimited size.'),
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);
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return $form;
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}
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/**
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* Add settings to an instance field settings form.
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*
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* Invoked from field_ui_field_edit_form() to allow the module defining the
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* field to add settings for a field instance.
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*
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* @param $field
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* The field structure being configured.
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* @param $instance
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* The instance structure being configured.
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*
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* @return
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* The form definition for the field instance settings.
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*/
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function hook_field_instance_settings_form($field, $instance) {
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$settings = $instance['settings'];
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$form['text_processing'] = array(
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'#type' => 'radios',
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'#title' => t('Text processing'),
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'#default_value' => $settings['text_processing'],
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'#options' => array(
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t('Plain text'),
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t('Filtered text (user selects text format)'),
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),
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);
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if ($field['type'] == 'text_with_summary') {
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$form['display_summary'] = array(
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'#type' => 'select',
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'#title' => t('Display summary'),
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'#options' => array(
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t('No'),
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t('Yes'),
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),
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'#description' => t('Display the summary to allow the user to input a summary value. Hide the summary to automatically fill it with a trimmed portion from the main post.'),
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'#default_value' => !empty($settings['display_summary']) ? $settings['display_summary'] : 0,
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);
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}
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return $form;
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}
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/**
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* Alter the formatter settings form.
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*
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* @param $element
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* Form array as returned by hook_field_formatter_settings_form().
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* @param $form_state
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* The form state of the (entire) configuration form.
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* @param $context
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* An associative array with the following elements:
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* - formatter: The formatter object.
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* - field: The field structure being configured.
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* - instance: The instance structure being configured.
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* - view_mode: The view mode being configured.
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* - form: The (entire) configuration form array.
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*/
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function hook_field_formatter_settings_form_alter(&$element, &$form_state, $context) {
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// Add a 'mysetting' checkbox to the settings form for 'foo_field' fields.
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if ($context['field']['type'] == 'foo_field') {
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$element['mysetting'] = array(
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'#type' => 'checkbox',
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'#title' => t('My setting'),
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'#default_value' => $context['formatter']->getSetting('mysetting'),
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);
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}
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}
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/**
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* Alter the field formatter settings summary.
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*
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* @param $summary
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* The summary as returned by hook_field_formatter_settings_summary().
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* @param $context
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* An associative array with the following elements:
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* - formatter: The formatter object.
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* - field: The field structure being configured.
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* - instance: The instance structure being configured.
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* - view_mode: The view mode being configured.
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*/
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function hook_field_formatter_settings_summary_alter(&$summary, $context) {
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// Append a message to the summary when an instance of foo_field has
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// mysetting set to TRUE for the current view mode.
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if ($context['field']['type'] == 'foo_field') {
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if ($context['formatter']->getSetting('mysetting')) {
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$summary .= '<br />' . t('My setting enabled.');
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}
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}
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}
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/**
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* @} End of "addtogroup field_types".
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*/
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