mypy for sqlalchemy (#402)

pyproject.toml

@@ -114,6 +114,10 @@ xfail_strict = true
 
 files = "ragna"
 
+plugins = [
+    "sqlmypy",
+]
+
 show_error_codes = true
 pretty = true
 

ragna/deploy/_api/database.py

@@ -256,7 +256,7 @@ def update_chat(session: Session, user: str, chat: schemas.Chat) -> None:
     orm_chat = _get_orm_chat(session, user=user, id=chat.id)
 
     orm_chat.prepared = chat.prepared
-    orm_chat.messages = [
+    orm_chat.messages = [  # type: ignore[assignment]
         _schema_to_orm_message(session, chat_id=chat.id, message=message)
         for message in chat.messages
     ]

ragna/deploy/_api/orm.py

@@ -41,7 +41,7 @@ class User(Base):
     __tablename__ = "users"
 
     id = Column(types.Uuid, primary_key=True)  # type: ignore[attr-defined]
-    name = Column(types.String)
+    name = Column(types.String, nullable=False)
 
 
 document_chat_association_table = Table(
@@ -57,10 +57,10 @@ class Document(Base):
 
     id = Column(types.Uuid, primary_key=True)  # type: ignore[attr-defined]
     user_id = Column(ForeignKey("users.id"))
-    name = Column(types.String)
+    name = Column(types.String, nullable=False)
     # Mind the trailing underscore here. Unfortunately, this is necessary, because
     # metadata without the underscore is reserved by SQLAlchemy
-    metadata_ = Column(Json)
+    metadata_ = Column(Json, nullable=False)
     chats = relationship(
         "Chat",
         secondary=document_chat_association_table,
@@ -77,19 +77,19 @@ class Chat(Base):
 
     id = Column(types.Uuid, primary_key=True)  # type: ignore[attr-defined]
     user_id = Column(ForeignKey("users.id"))
-    name = Column(types.String)
+    name = Column(types.String, nullable=False)
     documents = relationship(
         "Document",
         secondary=document_chat_association_table,
         back_populates="chats",
     )
-    source_storage = Column(types.String)
-    assistant = Column(types.String)
-    params = Column(Json)
+    source_storage = Column(types.String, nullable=False)
+    assistant = Column(types.String, nullable=False)
+    params = Column(Json, nullable=False)
     messages = relationship(
         "Message", cascade="all, delete", order_by="Message.timestamp"
     )
-    prepared = Column(types.Boolean)
+    prepared = Column(types.Boolean, nullable=False)
 
 
 source_message_association_table = Table(
@@ -111,9 +111,9 @@ class Source(Base):
     document_id = Column(ForeignKey("documents.id"))
     document = relationship("Document", back_populates="sources")
 
-    location = Column(types.String)
-    content = Column(types.String)
-    num_tokens = Column(types.Integer)
+    location = Column(types.String, nullable=False)
+    content = Column(types.String, nullable=False)
+    num_tokens = Column(types.Integer, nullable=False)
 
     messages = relationship(
         "Message",
@@ -127,11 +127,11 @@ class Message(Base):
 
     id = Column(types.Uuid, primary_key=True)  # type: ignore[attr-defined]
     chat_id = Column(ForeignKey("chats.id"))
-    content = Column(types.String)
-    role = Column(types.Enum(MessageRole))
+    content = Column(types.String, nullable=False)
+    role = Column(types.Enum(MessageRole), nullable=False)
     sources = relationship(
         "Source",
         secondary=source_message_association_table,
         back_populates="messages",
     )
-    timestamp = Column(types.DateTime)
+    timestamp = Column(types.DateTime, nullable=False)