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<?php
// $Id: nodereference.module,v 1.138.2.38 2008/10/06 15:11:39 karens Exp $
/**
* @file
* Defines a field type for referencing one node from another.
*/
/**
* Implementation of hook_menu().
*/
function nodereference_menu() {
$items = array();
$items['nodereference/autocomplete'] = array(
'title' => 'Nodereference autocomplete',
'page callback' => 'nodereference_autocomplete',
'access arguments' => array('access content'),
'type' => MENU_CALLBACK
);
return $items;
}
/**
* Implementation of hook_theme().
*/
function nodereference_theme() {
return array(
'nodereference_select' => array(
'arguments' => array('element' => NULL),
),
'nodereference_buttons' => array(
'arguments' => array('element' => NULL),
),
'nodereference_autocomplete' => array(
'arguments' => array('element' => NULL),
),
'nodereference_formatter_default' => array(
'arguments' => array('element'),
),
'nodereference_formatter_plain' => array(
'arguments' => array('element'),
),
'nodereference_formatter_full' => array(
'arguments' => array('element'),
'function' => 'theme_nodereference_formatter_full_teaser',
),
'nodereference_formatter_teaser' => array(
'arguments' => array('element'),
'function' => 'theme_nodereference_formatter_full_teaser',
),
);
}
/**
* Implementation of hook_field_info().
*
* Here we indicate that the content module will use its default
* handling for the view of this field.
*
* Callbacks can be omitted if default handing is used.
* They're included here just so this module can be used
* as an example for custom modules that might do things
* differently.
*/
function nodereference_field_info() {
return array(
'nodereference' => array(
'label' => t('Node reference'),
'description' => t('Store the ID of a related node as an integer value.'),
'callbacks' => array(
'tables' => CONTENT_CALLBACK_DEFAULT,
'arguments' => CONTENT_CALLBACK_DEFAULT,
),
),
);
}
/**
* Implementation of hook_field_settings().
*/
function nodereference_field_settings($op, $field) {
switch ($op) {
case 'form':
$form = array();
$form['referenceable_types'] = array(
'#type' => 'checkboxes',
'#title' => t('Content types that can be referenced'),
'#multiple' => TRUE,
'#default_value' => is_array($field['referenceable_types']) ? $field['referenceable_types'] : array(),
'#options' => node_get_types('names'),
);
if (module_exists('views')) {
$views = array('--' => '--');
$all_views = views_get_all_views();
foreach ($all_views as $view) {
// Only 'node' views that have fields will work for our purpose.
if ($view->base_table == 'node' && !empty($view->display['default']->display_options['fields'])) {
if ($view->type == 'Default') {
$views[t('Default Views')][$view->name] = $view->name;
}
else {
$views[t('Existing Views')][$view->name] = $view->name;
}
}
}
if (count($views) > 1) {
$form['advanced'] = array(
'#type' => 'fieldset',
'#title' => t('Advanced - Nodes that can be referenced (View)'),
'#collapsible' => TRUE,
'#collapsed' => !isset($field['advanced_view']) || $field['advanced_view'] == '--',
);
$form['advanced']['advanced_view'] = array(
'#type' => 'select',
'#title' => t('View used to select the nodes'),
'#options' => $views,
'#default_value' => isset($field['advanced_view']) ? $field['advanced_view'] : '--',
'#description' => t('Choose the "Views module" view that selects the nodes that can be referenced.<br />Note:<ul><li>Only views that have fields will work for this purpose.</li><li>This will discard the "Content types" settings above. Use the view\'s "filters" section instead.</li><li>Use the view\'s "fields" section to display additional informations about candidate nodes on node creation/edition form.</li><li>Use the view\'s "sort criteria" section to determine the order in which candidate nodes will be displayed.</li></ul>'),
);
$form['advanced']['advanced_view_args'] = array(
'#type' => 'textfield',
'#title' => t('View arguments'),
'#default_value' => isset($field['advanced_view_args']) ? $field['advanced_view_args'] : '',
'#required' => FALSE,
'#description' => t('Provide a comma separated list of arguments to pass to the view.'),
);
}
}
return $form;
case 'save':
$settings = array('referenceable_types');
if (module_exists('views')) {
$settings[] = 'advanced_view';
$settings[] = 'advanced_view_args';
}
return $settings;
case 'database columns':
$columns = array(
'nid' => array('type' => 'int', 'unsigned' => TRUE, 'not null' => FALSE),
);
return $columns;
case 'views data':
$data = content_views_field_views_data($field);
$db_info = content_database_info($field);
$table_alias = content_views_tablename($field);
// Swap the filter handler to the 'in' operator.
$data[$table_alias][$field['field_name'] .'_nid']['filter']['handler'] = 'content_handler_filter_many_to_one';
// Add a relationship for related node.
$data[$table_alias][$field['field_name'] .'_nid']['relationship'] = array(
'base' => 'node',
'field' => $db_info['columns']['nid']['column'],
'handler' => 'content_handler_relationship',
'label' => t($field['widget']['label']),
'multiple' => $field['multiple'],
);
return $data;
}
}
/**
* Implementation of hook_field().
*/
function nodereference_field($op, &$node, $field, &$items, $teaser, $page) {
switch ($op) {
// When preparing a translation, load any translations of existing references.
case 'prepare translation':
$addition = array();
$addition[$field['field_name']] = array();
if (isset($node->translation_source->$field['field_name']) && is_array($node->translation_source->$field['field_name'])) {
foreach ($node->translation_source->$field['field_name'] as $key => $reference) {
$reference_node = node_load($reference['nid']);
// Test if the referenced node type is translatable and, if so,
// load translations if the reference is not for the current language.
// We can assume the translation module is present because it invokes 'prepare translation'.
if (translation_supported_type($reference_node->type) && !empty($reference_node->language) && $reference_node->language != $node->language && $translations = translation_node_get_translations($reference_node->tnid)) {
// If there is a translation for the current language, use it.
$addition[$field['field_name']][] = array(
'nid' => isset($translations[$node->language]) ? $translations[$node->language]->nid : $reference['nid'],
);
}
}
}
return $addition;
break;
case 'validate':
$refs = _nodereference_potential_references($field);
foreach ($items as $delta => $item) {
if (is_array($item)) {
$error_element = isset($item['_error_element']) ? $item['_error_element'] : '';
if (is_array($item) && isset($item['_error_element'])) unset($item['_error_element']);
if (!empty($item['nid'])) {
if (!isset($refs[$item['nid']])) {
form_set_error($error_element, t("%name: this post can't be referenced.", array('%name' => t($field['widget']['label']))));
}
}
}
}
return $items;
}
}
/**
* Implementation of hook_content_is_empty().
*/
function nodereference_content_is_empty($item, $field) {
if (empty($item['nid'])) {
return TRUE;
}
return FALSE;
}
/**
* Implementation of hook_field_formatter_info().
*/
function nodereference_field_formatter_info() {
return array(
'default' => array(
'label' => t('Title (link)'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_CORE,
),
'plain' => array(
'label' => t('Title (no link)'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_CORE,
),
'full' => array(
'label' => t('Full node'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_CORE,
),
'teaser' => array(
'label' => t('Teaser'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_CORE,
),
);
}
/**
* Theme function for 'default' nodereference field formatter.
*/
function theme_nodereference_formatter_default($element) {
$output = '';
if (!empty($element['#item']['nid']) && is_numeric($element['#item']['nid']) && ($title = _nodereference_titles($element['#item']['nid']))) {
$output = l($title, 'node/'. $element['#item']['nid']);
}
return $output;
}
/**
* Theme function for 'plain' nodereference field formatter.
*/
function theme_nodereference_formatter_plain($element) {
$output = '';
if (!empty($element['#item']['nid']) && is_numeric($element['#item']['nid']) && ($title = _nodereference_titles($element['#item']['nid']))) {
$output = check_plain($title);
}
return $output;
}
/**
* Proxy theme function for 'full' and 'teaser' nodereference field formatters.
*/
function theme_nodereference_formatter_full_teaser($element) {
static $recursion_queue = array();
$output = '';
if (!empty($element['#item']['nid']) && is_numeric($element['#item']['nid'])) {
$node = $element['#node'];
$field = content_fields($element['#field_name'], $element['#type_name']);
// If no 'referencing node' is set, we are starting a new 'reference thread'
if (!isset($node->referencing_node)) {
$recursion_queue = array();
}
$recursion_queue[] = $node->nid;
if (in_array($element['#item']['nid'], $recursion_queue)) {
// Prevent infinite recursion caused by reference cycles:
// if the node has already been rendered earlier in this 'thread',
// we fall back to 'default' (node title) formatter.
return theme('nodereference_formatter_default', $element);
}
if ($referenced_node = node_load($element['#item']['nid'])) {
$referenced_node->referencing_node = $node;
$referenced_node->referencing_field = $field;
_nodereference_titles($element['#item']['nid'], $referenced_node->title);
$output = node_view($referenced_node, $element['#formatter'] == 'teaser');
}
}
return $output;
}
/**
* Helper function for formatters.
*
* Store node titles collected in the curent request.
*/
function _nodereference_titles($nid, $known_title = NULL) {
static $titles = array();
if (!isset($titles[$nid])) {
$title = $known_title ? $known_title : db_result(db_query("SELECT title FROM {node} WHERE nid=%d", $nid));
$titles[$nid] = $title ? $title : '';
}
return $titles[$nid];
}
/**
* Implementation of hook_widget_info().
*
* We need custom handling of multiple values for the nodereference_select
* widget because we need to combine them into a options list rather
* than display multiple elements.
*
* We will use the content module's default handling for default value.
*
* Callbacks can be omitted if default handing is used.
* They're included here just so this module can be used
* as an example for custom modules that might do things
* differently.
*/
function nodereference_widget_info() {
return array(
'nodereference_select' => array(
'label' => t('Select list'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_MODULE,
'callbacks' => array(
'default value' => CONTENT_CALLBACK_DEFAULT,
),
),
'nodereference_buttons' => array(
'label' => t('Check boxes/radio buttons'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_MODULE,
'callbacks' => array(
'default value' => CONTENT_CALLBACK_DEFAULT,
),
),
'nodereference_autocomplete' => array(
'label' => t('Autocomplete text field'),
'field types' => array('nodereference'),
'multiple values' => CONTENT_HANDLE_CORE,
'callbacks' => array(
'default value' => CONTENT_CALLBACK_DEFAULT,
),
),
);
}
/**
* Implementation of FAPI hook_elements().
*
* Any FAPI callbacks needed for individual widgets can be declared here,
* and the element will be passed to those callbacks for processing.
*
* Drupal will automatically theme the element using a theme with
* the same name as the hook_elements key.
*
* Autocomplete_path is not used by text_widget but other widgets can use it
* (see nodereference and userreference).
*/
function nodereference_elements() {
return array(
'nodereference_select' => array(
'#input' => TRUE,
'#columns' => array('uid'), '#delta' => 0,
'#process' => array('nodereference_select_process'),
),
'nodereference_buttons' => array(
'#input' => TRUE,
'#columns' => array('uid'), '#delta' => 0,
'#process' => array('nodereference_buttons_process'),
),
'nodereference_autocomplete' => array(
'#input' => TRUE,
'#columns' => array('name'), '#delta' => 0,
'#process' => array('nodereference_autocomplete_process'),
'#autocomplete_path' => FALSE,
),
);
}
/**
* Implementation of hook_widget().
*
* Attach a single form element to the form. It will be built out and
* validated in the callback(s) listed in hook_elements. We build it
* out in the callbacks rather than here in hook_widget so it can be
* plugged into any module that can provide it with valid
* $field information.
*
* Content module will set the weight, field name and delta values
* for each form element. This is a change from earlier CCK versions
* where the widget managed its own multiple values.
*
* If there are multiple values for this field, the content module will
* call this function as many times as needed.
*
* @param $form
* the entire form array, $form['#node'] holds node information
* @param $form_state
* the form_state, $form_state['values'][$field['field_name']]
* holds the field's form values.
* @param $field
* the field array
* @param $items
* array of default values for this field
* @param $delta
* the order of this item in the array of subelements (0, 1, 2, etc)
*
* @return
* the form item for a single element for this field
*/
function nodereference_widget(&$form, &$form_state, $field, $items, $delta = 0) {
switch ($field['widget']['type']) {
case 'nodereference_select':
$element = array(
'#type' => 'nodereference_select',
'#default_value' => $items,
);
break;
case 'nodereference_buttons':
$element = array(
'#type' => 'nodereference_buttons',
'#default_value' => $items,
);
break;
case 'nodereference_autocomplete':
$element = array(
'#type' => 'nodereference_autocomplete',
'#default_value' => isset($items[$delta]) ? $items[$delta] : NULL,
'#value_callback' => 'nodereference_autocomplete_value',
);
break;
}
return $element;
}
/**
* Value for a nodereference autocomplete element.
*
* Substitute in the node title for the node nid.
*/
function nodereference_autocomplete_value($element, $edit = FALSE) {
$field_key = $element['#columns'][0];
if (!empty($element['#default_value'][$field_key])) {
$nid = $element['#default_value'][$field_key];
$value = db_result(db_query(db_rewrite_sql('SELECT n.title FROM {node} n WHERE n.nid = %d'), $nid));
$value .= ' [nid:'. $nid .']';
return array($field_key => $value);
}
return array($field_key => NULL);
}
/**
* Process an individual element.
*
* Build the form element. When creating a form using FAPI #process,
* note that $element['#value'] is already set.
*
* The $fields array is in $form['#field_info'][$element['#field_name']].
*/
function nodereference_select_process($element, $edit, $form_state, $form) {
// The nodereference_select widget doesn't need to create its own
// element, it can wrap around the optionwidgets_select element.
// This will create a new, nested instance of the field.
// Add a validation step where the value can be unwrapped.
$field_key = $element['#columns'][0];
$element[$field_key] = array(
'#type' => 'optionwidgets_select',
'#default_value' => isset($element['#value']) ? $element['#value'] : '',
// The following values were set by the content module and need
// to be passed down to the nested element.
'#title' => $element['#title'],
'#required' => $element['#required'],
'#description' => $element['#description'],
'#field_name' => $element['#field_name'],
'#type_name' => $element['#type_name'],
'#delta' => $element['#delta'],
'#columns' => $element['#columns'],
);
if (empty($element[$field_key]['#element_validate'])) {
$element[$field_key]['#element_validate'] = array();
}
array_unshift($element[$field_key]['#element_validate'], 'nodereference_optionwidgets_validate');
return $element;
}
/**
* Process an individual element.
*
* Build the form element. When creating a form using FAPI #process,
* note that $element['#value'] is already set.
*
* The $fields array is in $form['#field_info'][$element['#field_name']].
*/
function nodereference_buttons_process($element, $edit, $form_state, $form) {
// The nodereference_select widget doesn't need to create its own
// element, it can wrap around the optionwidgets_select element.
// This will create a new, nested instance of the field.
// Add a validation step where the value can be unwrapped.
$field_key = $element['#columns'][0];
$element[$field_key] = array(
'#type' => 'optionwidgets_buttons',
'#default_value' => isset($element['#value']) ? $element['#value'] : '',
// The following values were set by the content module and need
// to be passed down to the nested element.
'#title' => $element['#title'],
'#required' => $element['#required'],
'#description' => $element['#description'],
'#field_name' => $element['#field_name'],
'#type_name' => $element['#type_name'],
'#delta' => $element['#delta'],
'#columns' => $element['#columns'],
);
if (empty($element[$field_key]['#element_validate'])) {
$element[$field_key]['#element_validate'] = array();
}
array_unshift($element[$field_key]['#element_validate'], 'nodereference_optionwidgets_validate');
return $element;
}
/**
* Process an individual element.
*
* Build the form element. When creating a form using FAPI #process,
* note that $element['#value'] is already set.
*
*/
function nodereference_autocomplete_process($element, $edit, $form_state, $form) {
// The nodereference autocomplete widget doesn't need to create its own
// element, it can wrap around the text_textfield element and add an autocomplete
// path and some extra processing to it.
// Add a validation step where the value can be unwrapped.
$field_key = $element['#columns'][0];
$element[$field_key] = array(
'#type' => 'text_textfield',
'#default_value' => isset($element['#value']) ? $element['#value'] : '',
'#autocomplete_path' => 'nodereference/autocomplete/'. $element['#field_name'],
// The following values were set by the content module and need
// to be passed down to the nested element.
'#title' => $element['#title'],
'#required' => $element['#required'],
'#description' => $element['#description'],
'#field_name' => $element['#field_name'],
'#type_name' => $element['#type_name'],
'#delta' => $element['#delta'],
'#columns' => $element['#columns'],
);
if (empty($element[$field_key]['#element_validate'])) {
$element[$field_key]['#element_validate'] = array();
}
array_unshift($element[$field_key]['#element_validate'], 'nodereference_autocomplete_validate');
// Used so that hook_field('validate') knows where to flag an error.
$element['_error_element'] = array(
'#type' => 'value',
// Wrapping the element around a text_textfield element creates a
// nested element, so the final id will look like 'field-name-0-nid-nid'.
'#value' => implode('][', array_merge($element['#parents'], array($field_key, $field_key))),
);
return $element;
}
/**
* Validate a select/buttons element.
*
* Remove the wrapper layer and set the right element's value.
* We don't know exactly where this element is, so we drill down
* through the element until we get to our key.
*
* We use $form_state['values'] instead of $element['#value']
* to be sure we have the most accurate value when other modules
* like optionwidgets are using #element_validate to alter the value.
*
*/
function nodereference_optionwidgets_validate($element, &$form_state) {
$field_key = $element['#columns'][0];
$value = $form_state['values'];
$new_parents = array();
foreach ($element['#parents'] as $parent) {
$value = $value[$parent];
// Use === to be sure we get right results if parent is a zero (delta) value.
if ($parent === $field_key) {
$element['#parents'] = $new_parents;
form_set_value($element, $value, $form_state);
break;
}
$new_parents[] = $parent;
}
}
/**
* Validate an autocomplete element.
*
* Remove the wrapper layer and set the right element's value.
* This will move the nested value at 'field-name-0-nid-nid'
* back to its original location, 'field-name-0-nid'.
*/
function nodereference_autocomplete_validate($element, &$form_state) {
$field_name = $element['#field_name'];
$type_name = $element['#type_name'];
$field = content_fields($field_name, $type_name);
$field_key = $element['#columns'][0];
$delta = $element['#delta'];
$value = $element['#value'][$field_key];
$nid = NULL;
if (!empty($value)) {
preg_match('/^(?:\s*|(.*) )?\[\s*nid\s*:\s*(\d+)\s*\]$/', $value, $matches);
if (!empty($matches)) {
// Explicit [nid:n].
list(, $title, $nid) = $matches;
if (!empty($title) && ($n = node_load($nid)) && $title != $n->title) {
form_error($element[$field_key], t('%name: title mismatch. Please check your selection.', array('%name' => t($field['widget']['label']))));
}
}
else {
// No explicit nid.
$nids = _nodereference_potential_references($field, $value, TRUE);
if (empty($nids)) {
form_error($element[$field_key], t('%name: found no valid post with that title.', array('%name' => t($field['widget']['label']))));
}
else {
// TODO:
// the best thing would be to present the user with an additional form,
// allowing the user to choose between valid candidates with the same title
// ATM, we pick the first matching candidate...
$nid = array_shift(array_keys($nids));
}
}
}
form_set_value($element, $nid, $form_state);
return $element;
}
/**
* Implementation of hook_allowed_values().
*/
function nodereference_allowed_values($field) {
$references = _nodereference_potential_references($field);
$options = array();
foreach ($references as $key => $value) {
// Views theming runs check_plain (htmlentities) on the values.
// We reverse that with html_entity_decode.
$options[$key] = html_entity_decode(strip_tags($value['rendered']));
}
return $options;
}
/**
* Fetch an array of all candidate referenced nodes.
*
* This info is used in various places (aloowed values, autocomplete results,
* input validation...). Some of them only need the nids, others nid + titles,
* others yet nid + titles + rendered row (for display in widgets).
* The array we return contains all the potentially needed information, and lets
* consumers use the parts they actually need.
*
* @param $field
* The field description.
* @param $string
* Optional string to filter titles on (used by autocomplete)
* @param $exact_string
* Optional: should the title filter be an exact match.
*
* @return
* An array of valid nodes in the form:
* array(
* nid => array(
* 'title' => The node title,
* 'rendered' => The text to display in widgets (can be HTML)
* ),
* ...
* )
*/
function _nodereference_potential_references($field, $string = '', $exact_string = FALSE) {
static $results = array();
if (!isset($results[$field['field_name']][$string][$exact_string])) {
$references = FALSE;
if (module_exists('views') && !empty($field['advanced_view']) && $field['advanced_view'] != '--') {
$references = _nodereference_potential_references_views($field, $string, $exact_string);
}
// If the view doesn't exist, we got FALSE, and fallback to the regular 'standard mode'.
if ($references === FALSE) {
$references = _nodereference_potential_references_standard($field, $string, $exact_string);
}
// Store the results.
$results[$field['field_name']][$string][$exact_string] = $references;
}
return $results[$field['field_name']][$string][$exact_string];
}
/**
* Helper function for _nodereference_potential_references():
* case of Views-defined referenceable nodes.
*/
function _nodereference_potential_references_views($field, $string = '', $exact_string = FALSE) {
$view_name = $field['advanced_view'];
if ($view = views_get_view($view_name)) {
// We add a display, and let it derive from the 'default' display.
// TODO: We should let the user pick a display in the fields settings - sort of requires AHAH...
$display = $view->add_display('content_simple');
$view->set_display($display);
// TODO from merlinofchaos on IRC : arguments using summary view can defeat the style setting.
// We might also need to check if there's an argument, and set *its* style_plugin as well.
$view->display_handler->set_option('style_plugin', 'content_php_array_autocomplete');
$view->display_handler->set_option('row_plugin', 'fields');
// Used in content_plugin_style_php_array::render(), to get
// the 'field' to be used as title.
$view->display_handler->set_option('content_title_field', 'title');
// Get arguments for the view.
if (!empty($field['advanced_view_args'])) {
// TODO: Support Tokens using token.module ?
$view_args = array_map('trim', explode(',', $field['advanced_view_args']));
}
else {
$view_args = array();
}
// We do need title field, so add it if not present (unlikely, but...)
$fields = $view->get_items('field', $display);
if (!isset($fields['title'])) {
$view->add_item($display, 'field', 'node', 'title');
}
if ($string !== '') {
// Add an instance of the 'title' filter.
$options = array('value' => $string, 'operator' => $exact_string ? '=' : 'contains');
$id = $view->add_item($display, 'filter', 'node', 'title', $options);
}
// If not set, make all fields inline and define a separator.
$options = $view->display_handler->get_option('row_options');
if (empty($options['inline'])) {
$options['inline'] = drupal_map_assoc(array_keys($view->get_items('field', $display)));
}
if (empty($options['separator'])) {
$options['separator'] = '-';
}
$view->display_handler->set_option('row_options', $options);
// Make sure the query is not cached
$view->is_cacheable = FALSE;
// Get the results.
$result = $view->execute_display($display, $view_args);
}
else {
$result = FALSE;
}
return $result;
}
/**
* Helper function for _nodereference_potential_references():
* referenceable nodes defined by content types.
*/
function _nodereference_potential_references_standard($field, $string = '', $exact_string = FALSE) {
$related_types = array();
$args = array();
if (is_array($field['referenceable_types'])) {
foreach (array_filter($field['referenceable_types']) as $related_type) {
$related_types[] = " n.type = '%s'";
$args[] = $related_type;
}
}
$related_clause = implode(' OR ', $related_types);
if (!count($related_types)) {
return array();
}
if ($string !== '') {
$string_clause = $exact_string ? " AND n.title = '%s'" : " AND n.title LIKE '%%%s%'";
$related_clause = "(". $related_clause .")". $string_clause;
$args[] = $string;
}
$result = db_query(db_rewrite_sql("SELECT n.nid, n.title AS node_title, n.type AS node_type FROM {node} n WHERE ". $related_clause ." ORDER BY n.title, n.type"), $args);
$references = array();
while ($node = db_fetch_object($result)) {
$references[$node->nid] = array(
'title' => $node->node_title,
'rendered' => $node->node_title,
);
}
return $references;
}
/**
* Menu callback; Retrieve a pipe delimited string of autocomplete suggestions for existing users
*/
function nodereference_autocomplete($field_name, $string = '') {
$fields = content_fields();
$field = $fields[$field_name];
$matches = array();
$references = _nodereference_potential_references($field, $string);
foreach ($references as $id => $row) {
// Add a class wrapper for a few required CSS overrides.
$matches[$row['title'] ." [nid:$id]"] = '<div class="reference-autocomplete">'. $row['rendered'] . '</div>';
}
drupal_json($matches);
}
/**
* Implementation of hook_node_types.
*/
function nodereference_node_type($op, $info) {
switch ($op) {
case 'update':
// Reflect type name changes to the 'referenceable types' settings.
if (!empty($info->old_type) && $info->old_type != $info->type) {
// content.module's implementaion of hook_node_type() has already
// refreshed _content_type_info().
$fields = content_fields();
foreach ($fields as $field_name => $field) {
if ($field['type'] == 'nodereference' && isset($field['referenceable_types'][$info->old_type])) {
$field['referenceable_types'][$info->type] = empty($field['referenceable_types'][$info->old_type]) ? 0 : $info->type;
unset($field['referenceable_types'][$info->old_type]);
content_field_instance_update($field);
}
}
}
break;
}
}
/**
* Theme preprocess function.
*
* Allows specific node templates for nodes displayed as values of a
* nodereference field with the 'full node' / 'teaser' formatters.
*/
function nodereference_preprocess_node(&$vars) {
// The 'referencing_field' attribute of the node is added by the 'teaser'
// and 'full node' formatters.
if (!empty($vars['node']->referencing_field)) {
$node = $vars['node'];
$field = $node->referencing_field;
$vars['template_files'][] = 'node-nodereference';
$vars['template_files'][] = 'node-nodereference-'. $field['field_name'];
$vars['template_files'][] = 'node-nodereference-'. $node->type;
$vars['template_files'][] = 'node-nodereference-'. $field['field_name'] .'-'. $node->type;
}
}
/**
* FAPI theme for an individual elements.
*
* The textfield or select is already rendered by the
* textfield or select themes and the html output
* lives in $element['#children']. Override this theme to
* make custom changes to the output.
*
* $element['#field_name'] contains the field name
* $element['#delta] is the position of this element in the group
*/
function theme_nodereference_select($element) {
return $element['#children'];
}
function theme_nodereference_buttons($element) {
return $element['#children'];
}
function theme_nodereference_autocomplete($element) {
return $element['#children'];
}