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<?php
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// $Id: autonode.module,v 1.2 2007/04/26 14:11:39 snufkin Exp $
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/**
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* @file
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* Defines a field type for autoreferencing one node from another.
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* Autoreference: if typed node doesnt exist it will create one according
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* to the settings
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*/
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/**
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* Implementation of hook_menu() based nodereference_menu
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*/
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function autonode_menu($may_cache) {
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$items = array();
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if ($may_cache) {
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$items[] = array('path' => 'autonode/autocomplete', 'title' => t('autonode reference autocomplete'),
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'callback' => 'autonode_autocomplete', 'access' => user_access('access content'), 'type' => MENU_CALLBACK);
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}
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return $items;
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}
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/**
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* Implementation of hook_field_info()
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*/
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function autonode_field_info() {
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return array(
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'autonode' => array('label' => 'Autonode Reference'),
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);
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}
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/**
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* Implementation of hook_field_settings()
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*/
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function autonode_field_settings($op, $field) {
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switch ($op) {
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case 'database columns':
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$columns = array(
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'code_types' => array(
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'type' => 'varchar',
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'not null' => TRUE,
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'default' => "''",
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'sortable' => TRUE,
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),
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'nid' => array(
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'type' => 'int',
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'not null' => TRUE,
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'default' => '0',
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),
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);
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$columns['code_types']['length'] = isset($field['maxlength']) ? $field['maxlength'] : 12; //TODO make this dependant on the type of code we have in
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return $columns;
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case 'form':
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$form = array();
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$form['referenceable_types'] = array(
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'#type' => 'checkboxes',
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'#title' => t('Content types that can be referenced'),
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'#multiple' => TRUE,
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'#required' => TRUE,
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'#default_value' => isset($field['referenceable_types']) ? $field['referenceable_types'] : array(),
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'#options' => node_get_types('names'),
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);
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$form['code_types']['#tree'] = TRUE;
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$form['code_types']['airport'] = array(
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'#collapsible' => TRUE,
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'#type' => 'fieldset',
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'#title' => t('Airport code types'),
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'#description' => t('Select which airport code do you want to use for reference.'),
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);
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$form['code_types']['airport']['codes'] = array(
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'#type' => 'radios',
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'#required' => TRUE,
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'#title' => t('Available code types'),
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'#default_value' => $field['code_types']['airport']['codes'] ? $field['code_types']['airport']['codes'] : '',
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'#options' => array(
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'iata' => t('3 letter IATA code (BUD, WAW etc)'),
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'icao' => t('4 letter ICAO code (LHBP, EPWA etc)'),
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),
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);
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return $form;
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case 'save':
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return array('referenceable_types', 'code_types', );
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}
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}
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// hook_field
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function autonode_field($op, &$node, $field, &$items, $teaser, $page) {
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switch($op) {
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case 'validate':
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foreach ($items as $delta => $item) {
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$error_field = $field['field_name'] .']['. $delta .'][node_name';
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if($item['nid'] == -1) {
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form_set_error($error_field, t('%name : this %code doesn\'t exist in the main database. Please contact the administrator so we can add it.', array('%name' => t($item['node_name']), '%code' => t($field['widget']['label']) ) ));
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}
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}
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return;
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case 'submit':
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foreach($items as $delta => $item) {
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if($nid == 0) { /* then we successfully assigned in widget/process */
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autonode_create_node($item['node_name'], $setup, 1);
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}
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}
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}
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}
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/**
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* Implementation of hook_field_formatter_info().
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*/
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function autonode_field_formatter_info() {
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return array(
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'default' => array(
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'label' => 'Default',
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'field types' => array('autonode'),
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),
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'plain' => array(
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'label' => 'Plain text',
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'field types' => array('autonode'),
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),
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);
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}
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/**
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* Implementation of hook_field_formatter().
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*/
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function autonode_field_formatter($field, $item, $formatter, $node) {
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$text = '';
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if (!empty($item['nid'])) {
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$referenced_node = node_load($item['nid']);
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if ($referenced_node) {
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$text = l($referenced_node->title, 'node/'. $referenced_node->nid);
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}
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}
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switch ($formatter) {
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case 'plain':
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return strip_tags($text);
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default:
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return $text;
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}
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}
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// hook_widget_info
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function autonode_widget_info () {
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return array(
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'airport_codes' => array(
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'label' => t('Define by airport codes'),
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'field types' => array('autonode', ),
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/** note the space beween field and types
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* otherwise content_admin.inc errors
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*/
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),
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);
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}
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// hook_widget_settings
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/**
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* comment to self: widget_settings cant reach outside to check the whole field.
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* $widget is going to look like :
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* Array
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* (
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* [default_value] =>
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* [default_value_php] =>
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* [maxlength] => 12
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* [type] => airport_codes
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* [weight] => 0
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* [label] => Airport Codefield
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* [description] =>
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* )
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* Here we cant just grab a maxlength according to what type of widget we picked.
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* this can be done in widget(), because then we receive the $field variable
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*/
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/**
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* Implementation of hook_widget
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*/
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function autonode_widget($op, &$node, $field, &$items) {
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switch($op) {
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case 'prepare form values':
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foreach ($items as $delta => $item) {
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if (isset($items[$delta]['nid'])) { //empty() will be true for 0
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$val = db_result(db_query(db_rewrite_sql('SELECT n.title FROM {node} n WHERE n.nid = %d'), $items[$delta]['nid']));
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$items[$delta]['default node_name'] = !(isset($val)) || $val == 0 ? 'NAN' : $val;
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}
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}
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break;
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case 'form' :
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$code = $field['code_types']['airport']['codes'];
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switch($code) { // hardcoded widget length
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case 'iata':
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$length = 3;
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break;
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case 'icao':
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$length = 4;
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break;
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default:
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$length = 12;
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break;
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}
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$form = array();
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$form[$field['field_name']] = array('#tree' => TRUE); // This is important. delete it, and you're dead
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$form[$field['field_name']][0]['node_name'] = array(
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'#type' => 'textfield',
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'#title' => t($field['widget']['label'] . ', ' . strtoupper($code) ),
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'#autocomplete_path' => 'autonode/autocomplete/'.$field['field_name'],
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'#default_value' => $items[0]['default node_name'],
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'#maxlength' => $length,
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'#size' => $length+1,
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'#required' => $field['required'],
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'#description' => t($field['widget']['description']),
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);
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return $form;
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case 'validate':
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/*foreach ($items as $delta => $item) {
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$error_field = $field['field_name'] .']['. $delta .'][node_name';
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if(!empty($item['node_name'])) {
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if(autonode_create_node($item['node_name'], $setup, 0) == '-1') { // we pass what's in the field
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form_set_error($error_field, t('%name : this %code doesn\'t exist in the main database. Please contact the administrator so we can add it.', array('%name' => t($item['node_name']), '%code' => t($field['widget']['label']) ) ));
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}
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}
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}*/
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return;
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case 'process form values':
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/* here we assign the nid to $items */
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foreach ($items as $delta => $item) {
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if (!empty($item['node_name'])) {
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$nid = autonode_create_node($item['node_name'], $setup, 0);
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}
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if($nid != "") { /* if we succeeded in assigning a $nid above */
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$items[$delta]['nid'] = $nid;
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$items[$delta]['error_field'] = $field['field_name'] . '][' .$delta . '][node_name';
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$items[$delta]['code_types'] = $field['code_types']['airport']['codes'];
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}
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//unset($items[$delta]['node_name']); // we need the representation
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elseif($delta>0) {
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unset($items[$delta]);
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}
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}
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break;
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}
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}
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function autonode_autocomplete($field_name, $string = '') {
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$fields = content_fields();
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$field = $fields[$field_name];
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$matches = array();
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foreach (_nodereference_potential_references( $field, TRUE, $string) as $row) {
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$matches[$row->node_title] = _nodereference_item($field, $row, TRUE);
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}
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print drupal_to_js($matches);
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exit();
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}
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/**
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* This function handles the automatic node creation.
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* $entry determines if it is a real entry, or just a test.
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* creates a node using $title as unique identifier in the reference database
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*
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* if $entry is true,
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* return -1: means the referred node doesnt exist in the reference database
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* 0: we are to write the first article,
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* nid: existing reference, returns nid
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*
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* $setup['type']: the type column in {node} for our content type
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*/
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function autonode_create_node($title, $setup, $entry) { //TODO: $title -> $field_name
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$setup = array();
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$setup['type'] = 'story'; //this should be like in nodereference, referenceable_types
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$title = strtoupper($title); //airport code specific, they are capital letters
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if($entry) { /* we create an entry if necessary */
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if(autonode_create_node($title, $setup, 0) == -1) {
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//this is deep shit, should be filtered out with validate
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return;
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}
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if(autonode_create_node($title, $setup, 0) == 0) { //test if we create, or just refer
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$node = array('type' => $setup['type']);
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$values['title'] = $title;
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$values['body'] = 'This is the body text!';
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$values['name'] = 'drupal';
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drupal_execute('story_node_form', $values, $node);
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$nid = autonode_query_nid($title, $setup['type']);
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}
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else { /* we asked for insertion, but no need, just refer. return the refer nid */
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$nid = autonode_query_nid($title, $setup['type']);
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}
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}
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else { /* $entry = 0, checking if entry we try to refer exists */
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$nid = autonode_query_nid($title, $setup['type']);
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$nid = $nid ? $nid : in_database($title); /* real nid if exists, 0 if new, -1 if not in db */
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}
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return($nid);
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}
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/**
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* custom sql query
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* returns the nid by title, type.
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* if nothing found $nid = ""
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* this should be used only if we are looking for ONE nid.
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*/
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function autonode_query_nid($title, $type) {
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$nid = db_result(db_query(db_rewrite_sql("SELECT n.nid FROM {node} n WHERE n.title='%s' AND n.type='%s'"), $title, $type ));
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return $nid;
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}
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/**
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* check the imported reference database for entries
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* we should get here only if there is no entry in the
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* drupal database already
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*/
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function in_database($id) {
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$database = array('WAW', 'BUD', 'AAA');
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if(in_array($id, $database)) {
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return(0);
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}
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else {
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return(-1);
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}
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}
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