feature: made migration moe robust

rhodecode/lib/dbmigrate/schema/db_4_20_0_1.py

@@ -4091,6 +4091,14 @@ class _PullRequestBase(BaseModel):
         "reviewer_data_json", MutationObj.as_mutable(JsonType(dialect_map=dict(mysql=UnicodeText(16384))))
     )
 
+    settings = Column(
+        "settings_json",
+        MutationObj.as_mutable(
+            JsonType(dialect_map=dict(mysql=UnicodeText(16384))),
+        ),
+        default=dict,
+    )
+
     @property
     def reviewer_data_json(self):
         return json.dumps(self.reviewer_data)

rhodecode/lib/dbmigrate/versions/117_version_5_7_0.py

@@ -27,6 +27,7 @@ def upgrade(migrate_engine):
 
     UserModel: User = db.User
 
+    if not User.get_by_username(UserModel.GHOST_USER):
         ghost_user = UserModel()
         ghost_user.name = UserModel.GHOST_USER.capitalize()
         ghost_user.username = UserModel.GHOST_USER