127 lines
3.7 KiB
PHP
127 lines
3.7 KiB
PHP
<?php
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/**
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* @file hook_diff() implementations for CCK (especially fields).
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*
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* These should use a field-hook so the data for the diff is
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* field-type specific.
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*/
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/**
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* Implementation of hook_diff()
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*/
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function content_diff($old_node, $new_node) {
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$result = array();
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// Prevent against invalid 'nodes' built by broken 3rd party code.
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if (isset($new_node->type)) {
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$type = content_types($new_node->type);
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$field_types = _content_field_types();
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foreach ($type['fields'] as $field) {
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// Ignore fields the current user is not allowed to view.
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if (!content_access('view', $field, NULL, $new_node)) {
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continue;
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}
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$function = $field_types[$field['type']]['module'] . '_content_diff_values';
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$function = function_exists($function) ? $function : 'content_content_diff_values';
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$old_values = array();
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$new_values = array();
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if (isset($old_node->$field['field_name'])) {
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$old_values = $function($old_node, $field, $old_node->$field['field_name']);
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}
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if (isset($new_node->$field['field_name'])) {
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$new_values = $function($new_node, $field, $new_node->$field['field_name']);
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}
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if ($old_values || $new_values) {
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$result[$field['field_name']] = array(
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'#name' => $field['widget']['label'],
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'#old' => $old_values,
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'#new' => $new_values,
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'#weight' => $field['widget']['weight'],
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'#format' => array(
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'show_header' => FALSE,
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),
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);
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}
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}
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}
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return $result;
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}
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/**
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* Default 'implementation' of hook_content_diff_values.
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*
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* Note that diff.module takes care of running check_plain on the output.
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*/
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function content_content_diff_values($node, $field, $items) {
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$return = array();
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foreach ($items as $item) {
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foreach (explode("\n", $item['value']) as $i) {
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$return[] = $i;
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}
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}
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return $return;
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}
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if (module_exists('userreference')) {
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/**
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* Implementation of hook_content_diff_values.
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*/
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function userreference_content_diff_values($node, $field, $items) {
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static $titles = array();
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// Gather ids.
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$ids = array();
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foreach ($items as $item) {
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if ($item['uid'] && is_numeric($item['uid'])) {
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$ids[] = $item['uid'];
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}
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}
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// Fetch titles we don't know yet.
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$queried_ids = array_diff($ids, array_keys($titles));
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if ($queried_ids) {
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$result = db_query('SELECT uid, name FROM {users} WHERE uid IN ('. db_placeholders($queried_ids) .')', $queried_ids);
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while ($row = db_fetch_array($result)) {
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$titles[$row['uid']] = $row['name'];
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}
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}
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// Return result.
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$return = array();
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foreach ($items as $item) {
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if ($item['uid'] && isset($titles[$item['uid']])) {
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$return[] = $titles[$item['uid']];
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}
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}
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return $return;
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}
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}
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if (module_exists('nodereference')) {
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/**
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* Implementation of hook_content_diff_values.
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*/
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function nodereference_content_diff_values($node, $field, $items) {
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static $titles = array();
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// Gather ids.
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$ids = array();
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foreach ($items as $item) {
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if ($item['nid'] && is_numeric($item['nid'])) {
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$ids[] = $item['nid'];
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}
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}
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// Fetch titles we don't know yet.
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$queried_ids = array_diff($ids, array_keys($titles));
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if ($queried_ids) {
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$result = db_query('SELECT nid, title FROM {node} WHERE nid IN ('. db_placeholders($queried_ids) .')', $queried_ids);
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while ($row = db_fetch_array($result)) {
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$titles[$row['nid']] = $row['title'];
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}
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}
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// Return result.
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$return = array();
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foreach ($items as $item) {
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if ($item['nid'] && isset($titles[$item['nid']])) {
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$return[] = $titles[$item['nid']];
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}
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}
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return $return;
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}
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}
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