From ffb2ea5d5280d4300795494885415a9a6679dcab Mon Sep 17 00:00:00 2001
From: Eileen McNaughton <emcnaughton@wikimedia.org>
Date: Fri, 6 Aug 2021 19:51:05 +1200
Subject: [PATCH] drupal 9 views fix (alternative)

I took a look at https://github.com/civicrm/civicrm-core/pull/20682 and it seemed clear that
in it's current state it would fix one CMS (d9) & break another (d7). This is
an alternate that will hopefully be non-breaky
---
 CRM/Admin/Form/Setting/UF.php | 12 +++---------
 CRM/Utils/System/Backdrop.php | 12 ++++++++++++
 CRM/Utils/System/Base.php     | 17 +++++++++++++++++
 CRM/Utils/System/Drupal9.php  | 21 +++++++++++++++++++++
 4 files changed, 53 insertions(+), 9 deletions(-)
 create mode 100644 CRM/Utils/System/Drupal9.php

diff --git a/CRM/Admin/Form/Setting/UF.php b/CRM/Admin/Form/Setting/UF.php
index c59013a07639..b4c83c8413f9 100644
--- a/CRM/Admin/Form/Setting/UF.php
+++ b/CRM/Admin/Form/Setting/UF.php
@@ -67,8 +67,8 @@ public function buildQuickForm() {
         $config->dsn != $config->userFrameworkDSN || !empty($drupal_prefix)
       )
     ) {
-      $dsn = CRM_Utils_SQL::autoSwitchDSN($config->dsn);
-      $dsnArray = DB::parseDSN($dsn);
+
+      $dsnArray = DB::parseDSN(CRM_Utils_SQL::autoSwitchDSN($config->dsn));
       $tableNames = CRM_Core_DAO::getTableNames();
       asort($tableNames);
       $tablePrefixes = '$databases[\'default\'][\'default\'][\'prefix\']= [';
@@ -77,13 +77,7 @@ public function buildQuickForm() {
       }
       // add default prefix: the drupal database prefix
       $tablePrefixes .= "\n  'default' => '$drupal_prefix',";
-      $prefix = "";
-      if ($config->dsn != $config->userFrameworkDSN) {
-        $prefix = "`{$dsnArray['database']}`.";
-        if ($config->userFramework === 'Backdrop') {
-          $prefix = "{$dsnArray['database']}.";
-        }
-      }
+      $prefix = $config->userSystem->getCMSDatabasePrefix();
       foreach ($tableNames as $tableName) {
         $tablePrefixes .= "\n  '" . str_pad($tableName . "'", 41) . " => '{$prefix}',";
       }
diff --git a/CRM/Utils/System/Backdrop.php b/CRM/Utils/System/Backdrop.php
index 3d72779f1569..5739976b9d00 100644
--- a/CRM/Utils/System/Backdrop.php
+++ b/CRM/Utils/System/Backdrop.php
@@ -1056,4 +1056,16 @@ public function getCMSPermissionsUrlParams() {
     return ['ufAccessURL' => url('admin/config/people/permissions')];
   }
 
+  /**
+   * Get the CMS database as a 'prefix'.
+   *
+   * This returns a string that can be prepended to a query to include a CMS table.
+   *
+   * However, this string should contain backticks, or not, in accordance with the
+   * CMS's drupal views expectations, if any.
+   */
+  public function getCMSDatabasePrefix(): string {
+    return str_replace(parent::getCMSDatabasePrefix(), '`', '');
+  }
+
 }
diff --git a/CRM/Utils/System/Base.php b/CRM/Utils/System/Base.php
index e08bad2c069a..acd0287129eb 100644
--- a/CRM/Utils/System/Base.php
+++ b/CRM/Utils/System/Base.php
@@ -1051,6 +1051,23 @@ public function getCMSPermissionsUrlParams() {
     return [];
   }
 
+  /**
+   * Get the CMS database as a 'prefix'.
+   *
+   * This returns a string that can be prepended to a query to include a CMS table.
+   *
+   * However, this string should contain backticks, or not, in accordance with the
+   * CMS's drupal views expectations, if any.
+   */
+  public function getCMSDatabasePrefix(): string {
+    $crmDatabase = DB::parseDSN(CRM_Core_Config::singleton()->dsn)['database'];
+    $cmsDatabase = DB::parseDSN(CRM_Core_Config::singleton()->dsn)['database'];
+    if ($crmDatabase === $cmsDatabase) {
+      return '';
+    }
+    return "`$cmsDatabase`.";
+  }
+
   /**
    * Invalidates the cache of dynamic routes and forces a rebuild.
    */
diff --git a/CRM/Utils/System/Drupal9.php b/CRM/Utils/System/Drupal9.php
new file mode 100644
index 000000000000..0ef86331d3a0
--- /dev/null
+++ b/CRM/Utils/System/Drupal9.php
@@ -0,0 +1,21 @@
+<?php
+/*
+ +--------------------------------------------------------------------+
+ | Copyright CiviCRM LLC. All rights reserved.                        |
+ |                                                                    |
+ | This work is published under the GNU AGPLv3 license with some      |
+ | permitted exceptions and without any warranty. For full license    |
+ | and copyright information, see https://civicrm.org/licensing       |
+ +--------------------------------------------------------------------+
+ */
+
+/**
+ *
+ * @package CRM
+ * @copyright CiviCRM LLC https://civicrm.org/licensing
+ */
+
+/**
+ * Drupal specific stuff goes here.
+ */
+class CRM_Utils_System_Drupal9 extends CRM_Utils_System_Drupal8 {}