first import

sites/all/modules/references/views/references_handler_argument.inc

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * @file
+ * Provide handler to replace reference with title.
+ */
+class references_handler_argument extends views_handler_argument_numeric {
+
+  /**
+   *  Use entity title for % placeholders in argument titles.
+   */
+  function title_query() {
+    // Use the same table and field than those used for summary lists
+    // ('name table', 'name field').
+    $table_data = views_fetch_data($this->name_table);
+    $table_info = $table_data['table']['join'][$this->table];
+    $table = $table_info['table'];
+    $key_field = $table_info['field'];
+    $title_field = $this->name_field;
+
+    $results = db_select($table, 'base_table')
+      ->fields('base_table', array($key_field, $title_field))
+      ->condition("base_table.$key_field", $this->value)
+      ->execute()
+      // Grab results as 'key => title' array.
+      ->fetchAllKeyed();
+
+    // Sanitize titles and put them back in the correct order in an unkeyed
+    // array.
+    $titles = array();
+    foreach ($this->value as $key) {
+      if (isset($results[$key])) {
+        $titles[] = check_plain($results[$key]);
+      }
+    }
+
+    return $titles;
+  }
+}