Fix migration for user defined themes (#5682)

diff --git a/models/migrations/v77.go b/models/migrations/v77.go
index 12e7456642c33c2e3c3600995e57cecc5368abd0..c564d4cf549f04115747c3a78d1c578adb635fc0 100644 (file)
--- a/models/migrations/v77.go
+++ b/models/migrations/v77.go
@@ -10,7 +10,7 @@ import (
 
 func addUserDefaultTheme(x *xorm.Engine) error {
        type User struct {
-               Theme string `xorm:"VARCHAR(30)"`
+               Theme string `xorm:"VARCHAR(30) NOT NULL DEFAULT ''"`
        }
 
        return x.Sync2(new(User))