Update atst to atat

atat/models/portfolio_invitation.py

@@ -0,0 +1,33 @@
+from sqlalchemy import Column, ForeignKey
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import relationship, backref
+
+from atat.models.base import Base
+import atat.models.mixins as mixins
+
+
+class PortfolioInvitation(
+    Base, mixins.TimestampsMixin, mixins.InvitesMixin, mixins.AuditableMixin
+):
+    __tablename__ = "portfolio_invitations"
+
+    portfolio_role_id = Column(
+        UUID(as_uuid=True), ForeignKey("portfolio_roles.id"), index=True, nullable=False
+    )
+    role = relationship(
+        "PortfolioRole",
+        backref=backref("invitations", order_by="PortfolioInvitation.time_created"),
+    )
+
+    @property
+    def portfolio(self):
+        if self.role:  # pragma: no branch
+            return self.role.portfolio
+
+    @property
+    def portfolio_id(self):
+        return self.role.portfolio_id
+
+    @property
+    def application_id(self):
+        return None