add TUVote SQLAlchemy ORM model

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/models/tu_vote.py

@@ -0,0 +1,43 @@
+from sqlalchemy import Column, ForeignKey, Integer
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import backref, relationship
+
+import aurweb.models.tu_voteinfo
+import aurweb.models.user
+
+from aurweb.models.declarative import Base
+
+
+class TUVote(Base):
+    __tablename__ = "TU_Votes"
+
+    VoteID = Column(Integer, ForeignKey("TU_VoteInfo.ID", ondelete="CASCADE"),
+                    nullable=False)
+    VoteInfo = relationship(
+        "TUVoteInfo", backref=backref("tu_votes", lazy="dynamic"),
+        foreign_keys=[VoteID])
+
+    UserID = Column(Integer, ForeignKey("Users.ID", ondelete="CASCADE"),
+                    nullable=False)
+    User = relationship(
+        "User", backref=backref("tu_votes", lazy="dynamic"),
+        foreign_keys=[UserID])
+
+    __mapper_args__ = {"primary_key": [VoteID, UserID]}
+
+    def __init__(self,
+                 VoteInfo: aurweb.models.tu_voteinfo.TUVoteInfo = None,
+                 User: aurweb.models.user.User = None):
+        self.VoteInfo = VoteInfo
+        if self.VoteInfo is None:
+            raise IntegrityError(
+                statement="Foreign key VoteID cannot be null.",
+                orig="TU_Votes.VoteID",
+                params=("NULL"))
+
+        self.User = User
+        if self.User is None:
+            raise IntegrityError(
+                statement="Foreign key UserID cannot be null.",
+                orig="TU_Votes.UserID",
+                params=("NULL"))