rfe #1731967 Check for relations support on main page.

ChangeLog

@@ -36,6 +36,7 @@ $HeadURL: https://phpmyadmin.svn.sourceforge.net/svnroot/phpmyadmin/trunk/phpMyA
   editing, thanks to knittl - knittl
 + rfe #2123386 Added option to disable mcrypt warning.
 - bug #2648502 Request-URI Too Large error from Location header
++ rfe #1731967 Check for relations support on main page.
 
 3.1.4.0 (not yet released)
 + patch #1808339 [doc] Apache SSLOptions and StdEnvVars FAQ,

chk_rel.php

@@ -10,7 +10,8 @@
  * Gets some core libraries
  */
 require_once './libraries/common.inc.php';
-require_once './libraries/db_common.inc.php';
+$GLOBALS['js_include'][] = 'functions.js';
+require_once './libraries/header.inc.php';
 require_once './libraries/relation.lib.php';
 
 

main.php

@@ -302,6 +302,24 @@ if (!empty($_SESSION['auto_blowfish_secret']) &&
     trigger_error($strSecretRequired, E_USER_WARNING);
 }
 
+/**
+ * Check whether relations are supported.
+ */
+if ($server > 0) {
+    require_once './libraries/relation.lib.php';
+    $cfgRelation = PMA_getRelationsParam();
+    if(!$cfgRelation['allworks'] && $cfg['PmaNoRelation_DisableWarning'] == false) {
+        $message = PMA_Message::notice('strRelationNotWorking');
+        $message->addParam('<a href="' . $cfg['PmaAbsoluteUri'] . 'chk_rel.php?' . $common_url_query . '">', false);
+        $message->addParam('</a>', false);
+        /* Show error if user has configured something, notice elsewhere */
+        if (!empty($cfg['Servers'][$server]['pmadb'])) {
+            $message->isError(true);
+        }
+        $message->display();
+    } // end if
+}
+
 /**
  * Warning about different MySQL library and server version
  * (a difference on the third digit does not count).