Add model for SuperDepartment

corepos/db/office_op/model.py

@@ -74,6 +74,38 @@ class Parameter(Base):
         return "{}-{} {}".format(self.store_id, self.lane_id, self.param_key)
 
 
+class SuperDepartment(Base):
+    """
+    Represents a "super" (parent/child) department mapping.
+    """
+    __tablename__ = 'superdepts'
+    __table_args__ = (
+        sa.ForeignKeyConstraint(['superID'], ['departments.dept_no']),
+        sa.ForeignKeyConstraint(['dept_ID'], ['departments.dept_no']),
+    )
+
+    parent_id = sa.Column('superID', sa.Integer(), primary_key=True, autoincrement=False, nullable=False)
+    parent = orm.relationship(
+        'Department',
+        foreign_keys=[parent_id],
+        doc="""
+        Reference to the parent department for this mapping.
+        """,
+        backref=orm.backref('_super_children'))
+
+    child_id = sa.Column('dept_ID', sa.Integer(), primary_key=True, autoincrement=False, nullable=False)
+    child = orm.relationship(
+        'Department',
+        foreign_keys=[child_id],
+        doc="""
+        Reference to the child department for this mapping.
+        """,
+        backref=orm.backref('_super_parent', uselist=False))
+
+    def __str__(self):
+        return "{} / {}".format(self.parent, self.child)
+
+
 class Department(Base):
     """
     Represents a department within the organization.