- Patch #581392 by sun, catch | mr.baileys: Fixed Add an API function for deleting revisions.

modules/node/node.api.php

@@ -281,7 +281,7 @@ function hook_node_delete($node) {
  * @param $node
  *   The node the action is being performed on.
  */
-function hook_node_delete_revision($node) {
+function hook_node_revision_delete($node) {
   db_delete('upload')->condition('vid', $node->vid)->execute();
   if (!is_array($node->files)) {
     return;

modules/node/node.module

@@ -780,10 +780,11 @@ function node_load_multiple($nids = array(), $conditions = array(), $reset = FAL
  * @return
  *   A fully-populated node object.
  */
-function node_load($nid, $vid = array(), $reset = FALSE) {
-  $vid = isset($vid) ? array('vid' => $vid) : NULL;
-  $node = node_load_multiple(array($nid), $vid, $reset);
-  return $node ? $node[$nid] : FALSE;
+function node_load($nid = NULL, $vid = NULL, $reset = FALSE) {
+  $nids = (isset($nid) ? array($nid) : array());
+  $conditions = (isset($vid) ? array('vid' => $vid) : array());
+  $node = node_load_multiple($nids, $conditions, $reset);
+  return $node ? reset($node) : FALSE;
 }
 
 /**
@@ -1010,6 +1011,31 @@ function node_delete_multiple($nids) {
   drupal_static_reset('node_load_multiple');
 }
 
+/**
+ * Delete a node revision.
+ *
+ * @param $revision_id
+ *   The revision ID to delete.
+ */
+function node_revision_delete($revision_id) {
+  if ($revision = node_load(NULL, $revision_id)) {
+    // Prevent deleting the current revision.
+    $node = node_load($revision->nid);
+    if ($revision_id == $node->vid) {
+      return FALSE;
+    }
+
+    db_delete('node_revision')
+      ->condition('nid', $revision->nid)
+      ->condition('vid', $revision->vid)
+      ->execute();
+    module_invoke_all('node_revision_delete', $revision);
+    field_attach_delete_revision('node', $revision);
+    return TRUE;
+  }
+  return FALSE;
+}
+
 /**
  * Generate an array for rendering the given node.
  *
@@ -1484,13 +1510,12 @@ function node_user_cancel($edit, $account, $method) {
         ->condition('uid', $account->uid)
         ->execute()
         ->fetchCol();
-      foreach ($nodes as $nid) {
-        node_delete($nid);
-      }
+      node_delete_multiple($nodes);
       // Delete old revisions.
-      db_delete('node_revision')
-        ->condition('uid', $account->uid)
-        ->execute();
+      $revisions = db_query('SELECT vid FROM {node_revision} WHERE uid = :uid', array(':uid' => $account->uid))->fetchCol();
+      foreach ($revisions as $revision) {
+        node_revision_delete($revision);
+      }
       // Clean history.
       db_delete('history')
         ->condition('uid', $account->uid)

modules/node/node.pages.inc

@@ -563,12 +563,8 @@ function node_revision_delete_confirm($form, $form_state, $node_revision) {
 
 function node_revision_delete_confirm_submit($form, &$form_state) {
   $node_revision = $form['#node_revision'];
-  db_delete('node_revision')
-    ->condition('nid', $node_revision->nid)
-    ->condition('vid', $node_revision->vid)
-    ->execute();
-  module_invoke_all('node_delete_revision', $node_revision);
-  field_attach_delete_revision('node', $node_revision);
+  node_revision_delete($node_revision->vid);
+
   watchdog('content', '@type: deleted %title revision %revision.', array('@type' => $node_revision->type, '%title' => $node_revision->title, '%revision' => $node_revision->vid));
   drupal_set_message(t('Revision from %revision-date of @type %title has been deleted.', array('%revision-date' => format_date($node_revision->revision_timestamp), '@type' => node_type_get_name($node_revision), '%title' => $node_revision->title)));
   $form_state['redirect'] = 'node/' . $node_revision->nid;

modules/taxonomy/taxonomy.module

@@ -865,8 +865,7 @@ function taxonomy_node_get_terms($node, $key = 'tid') {
  * Save term associations for a given node.
  */
 function taxonomy_node_save($node, $terms) {
-
-  taxonomy_node_delete_revision($node);
+  taxonomy_node_revision_delete($node);
 
   // Free tagging vocabularies do not send their tids in the form,
   // so we'll detect them here and process them independently.
@@ -1594,11 +1593,11 @@ function taxonomy_node_delete($node) {
 }
 
 /**
- * Implement hook_node_delete_revision().
+ * Implement hook_node_revision_delete().
  *
  * Remove associations of a node to its terms.
  */
-function taxonomy_node_delete_revision($node) {
+function taxonomy_node_revision_delete($node) {
   db_delete('taxonomy_term_node')
     ->condition('vid', $node->vid)
     ->execute();

modules/upload/upload.module

@@ -412,9 +412,9 @@ function upload_node_delete($node) {
 }
 
 /**
- * Implement hook_node_delete_revision().
+ * Implement hook_node_revision_delete().
  */
-function upload_node_delete_revision($node) {
+function upload_node_revision_delete($node) {
   db_delete('upload')->condition('vid', $node->vid)->execute();
   if (!is_array($node->files)) {
     return;