comparison sites/all/modules/ctools/plugins/arguments/rid.inc @ 0:ff03f76ab3fe

initial version

+<?php
+
+/**
+ * @file
+ *
+ * Plugin to provide an argument handler for a node revision id
+ */
+
+/**
+ * Plugins are described by creating a $plugin array which will be used
+ * by the system that includes this file.
+ */
+$plugin = array(
+  'title' => t("Revision: ID"),
+  'keyword' => 'revision',
+  'description' => t('Creates a node context from a revision ID argument.'),
+  'context' => 'ctools_argument_rid_context',
+  'placeholder form' => array(
+    '#type' => 'textfield',
+    '#description' => t('Enter the revision ID of a node for this argument'),
+  ),
+);
+
+/**
+ * Discover if this argument gives us the node we crave.
+ */
+function ctools_argument_rid_context($arg = NULL, $conf = NULL, $empty = FALSE) {
+  // If unset it wants a generic, unfilled context.
+  if ($empty) {
+    return ctools_context_create_empty('node');
+  }
+
+  // We can accept either a node object or a pure nid.
+  if (is_object($arg)) {
+    return ctools_context_create('node', $arg);
+  }
+
+  if (!is_numeric($arg)) {
+    return FALSE;
+  }
+
+  $nid = db_query('SELECT nid FROM {node_revisions} WHERE vid = :vid', array(':vid' => $arg))->fetchField();
+  $node = node_load($nid, $arg);
+  if (!$node) {
+    return FALSE;
+  }
+
+  return ctools_context_create('node', $node);
+}
+