Fixed #32732 -- Removed usage of deprecated 'db' and 'passwd' connection options in MySQL backend.

The 'db' and 'passwd' connection options have been deprecated, use
'database' and 'password' instead (available since mysqlclient >= 1.3.8).

This also allows the 'database' option in DATABASES['OPTIONS'] on MySQL.

django/db/backends/mysql/base.py

@@ -200,9 +200,9 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         if settings_dict['USER']:
             kwargs['user'] = settings_dict['USER']
         if settings_dict['NAME']:
-            kwargs['db'] = settings_dict['NAME']
+            kwargs['database'] = settings_dict['NAME']
         if settings_dict['PASSWORD']:
-            kwargs['passwd'] = settings_dict['PASSWORD']
+            kwargs['password'] = settings_dict['PASSWORD']
         if settings_dict['HOST'].startswith('/'):
             kwargs['unix_socket'] = settings_dict['HOST']
         elif settings_dict['HOST']:

django/db/backends/mysql/client.py

@@ -8,7 +8,10 @@ class DatabaseClient(BaseDatabaseClient):
     def settings_to_cmd_args_env(cls, settings_dict, parameters):
         args = [cls.executable_name]
         env = None
-        db = settings_dict['OPTIONS'].get('db', settings_dict['NAME'])
+        database = settings_dict['OPTIONS'].get(
+            'database',
+            settings_dict['OPTIONS'].get('db', settings_dict['NAME']),
+        )
         user = settings_dict['OPTIONS'].get('user', settings_dict['USER'])
         password = settings_dict['OPTIONS'].get(
             'password',
@@ -51,7 +54,7 @@ class DatabaseClient(BaseDatabaseClient):
             args += ["--ssl-key=%s" % client_key]
         if charset:
             args += ['--default-character-set=%s' % charset]
-        if db:
-            args += [db]
+        if database:
+            args += [database]
         args.extend(parameters)
         return args, env

docs/releases/3.2.3.txt

@@ -9,4 +9,4 @@ Django 3.2.3 fixes several bugs in 3.2.2.
 Bugfixes
 ========
 
-* ...
+* Prepared for ``mysqlclient`` > 2.0.3 support (:ticket:`32732`).

tests/dbshell/test_mysql.py

@@ -50,6 +50,9 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
             'optiondbname',
         ]
         expected_env = {'MYSQL_PWD': 'optionpassword'}
+        for keys in [('database', 'password'), ('db', 'passwd')]:
+            with self.subTest(keys=keys):
+                database, password = keys
                 self.assertEqual(
                     self.settings_to_cmd_args_env({
                         'NAME': 'settingdbname',
@@ -58,9 +61,9 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
                         'HOST': 'settinghost',
                         'PORT': settings_port,
                         'OPTIONS': {
-                    'db': 'optiondbname',
+                            database: 'optiondbname',
                             'user': 'optionuser',
-                    'passwd': 'optionpassword',
+                            password: 'optionpassword',
                             'host': 'optionhost',
                             'port': options_port,
                         },
@@ -68,23 +71,28 @@ class MySqlDbshellCommandTestCase(SimpleTestCase):
                     (expected_args, expected_env),
                 )
 
-    def test_options_password(self):
+    def test_options_non_deprecated_keys_preferred(self):
         expected_args = [
             'mysql',
             '--user=someuser',
             '--host=somehost',
             '--port=444',
-            'somedbname',
+            'optiondbname',
         ]
         expected_env = {'MYSQL_PWD': 'optionpassword'}
         self.assertEqual(
             self.settings_to_cmd_args_env({
-                'NAME': 'somedbname',
+                'NAME': 'settingdbname',
                 'USER': 'someuser',
                 'PASSWORD': 'settingpassword',
                 'HOST': 'somehost',
                 'PORT': 444,
-                'OPTIONS': {'password': 'optionpassword'},
+                'OPTIONS': {
+                    'database': 'optiondbname',
+                    'db': 'deprecatedoptiondbname',
+                    'password': 'optionpassword',
+                    'passwd': 'deprecatedoptionpassword',
+                },
             }),
             (expected_args, expected_env),
         )