users and status working

app/alchemy/status.py

@@ -0,0 +1,42 @@
+from sqlalchemy import String, ForeignKey, event
+from sqlalchemy.orm import Mapped, mapped_column, declared_attr, relationship, Session
+
+from .base import Base
+
+__all__ = ["Status"]
+
+
+class Status(Base):
+    """Status of a record. Can be used in any table by using MixIn :class:`StatusForeignKey`."""
+
+    id: Mapped[str] = mapped_column(String(3), primary_key=True)
+    name: Mapped[str] = mapped_column(String(30), unique=True)
+
+
+class StatusForeignKey:
+    """Foreign Key Mixin for :py:class:`.Status`
+
+    By adding this mixin every record will get a status assigned.
+    """
+
+    status_id: Mapped[str] = mapped_column(ForeignKey("status.id"), default="N", sort_order=1000000)
+
+    # noinspection PyMethodParameters
+    @declared_attr
+    def status(cls) -> Mapped[Status]:
+        return relationship()
+
+
+# noinspection PyUnusedLocal
+@event.listens_for(Status.__table__, "after_create")
+def initialize_status(target, connection, **kwargs):
+    with Session(connection) as session:
+        for kwargs in (
+                dict(id="A", name="Active"),
+                dict(id="I", name="Inactive"),
+                dict(id="N", name="New"),
+                dict(id="PRE", name="Prepared"),
+                dict(id="X", name="eXcluded"),
+        ):
+            session.add(Status(**kwargs))
+        session.commit()