The email in user table should not be unique.
So I changed the file user.php in common/models also i changed the SignupForm.php in frontend/models and m130524_201442_init.php in console/migrations but than i get this error
Integrity constraint violation – yii\db\IntegrityException
SQLSTATE[23000]: [Microsoft][SQL Server Native Client 11.0][SQL Server]Violation of UNIQUE KEY constraint ‘UQ__user__665877D04E88ABD4’. Cannot insert duplicate key in object ‘dbo.user’. The duplicate key value is ().
The SQL being executed was: INSERT INTO user VALUES (‘test1’, ‘test@test.de’, ‘$2y$13$zV48OV5q5MpLIx/GxiRDBuKqcBRmOZITx76i24u1KwmAqFKan49QS’, ‘eY7UxwlK3wZ-PK8Ami3nUGinKFJ6GTJJ’, 1, 1, 1, GETDATE(), GETDATE())
Error Info: Array
(
[0] => 23000
[1] => 2627
[2] => [Microsoft][SQL Server Native Client 11.0][SQL Server]Violation of UNIQUE KEY constraint ‘UQ__user__665877D04E88ABD4’. Cannot insert duplicate key in object ‘dbo.user’. The duplicate key value is ().
Please can u help me