fix(db): Add __repr__ to custom column types, same as done by SQLAlchemy

flaschengeist/models/__init__.py

@@ -1,7 +1,7 @@
 import sys
 import datetime
 
-from sqlalchemy import BigInteger
+from sqlalchemy import BigInteger, util
 from sqlalchemy.dialects import mysql, sqlite
 from sqlalchemy.types import DateTime, TypeDecorator
 
@@ -50,6 +50,10 @@ class Serial(TypeDecorator):
     cache_ok = True
     impl = BigInteger().with_variant(mysql.BIGINT(unsigned=True), "mysql").with_variant(sqlite.INTEGER(), "sqlite")
 
+    # https://alembic.sqlalchemy.org/en/latest/autogenerate.html?highlight=custom%20column#affecting-the-rendering-of-types-themselves
+    def __repr__(self) -> str:
+        return util.generic_repr(self)
+
 
 class UtcDateTime(TypeDecorator):
     """Almost equivalent to `sqlalchemy.types.DateTime` with
@@ -85,3 +89,7 @@ class UtcDateTime(TypeDecorator):
                 value = value.astimezone(datetime.timezone.utc)
             value = value.replace(tzinfo=datetime.timezone.utc)
         return value
+
+    # https://alembic.sqlalchemy.org/en/latest/autogenerate.html?highlight=custom%20column#affecting-the-rendering-of-types-themselves
+    def __repr__(self) -> str:
+        return util.generic_repr(self)