问题
I am trying to create a one-to-one relationship between a Department
& Ticket
table. This way when looking inside of Flask-Admin
a user would be able to see the Department
name instead of the ID.
I have tried to setup the relationship as follows:
# Ticket Table
class Tickets(db.Model):
__tablename__ = 'tickets'
ticketID = db.Column(db.Integer, nullable=False, primary_key=True, autoincrement=True, unique=True)
cust_name = db.Column(db.String(50), nullable=False)
cust_email = db.Column(db.String(50), nullable=False)
cust_phone = db.Column(db.Integer, nullable=False)
tix_dept = db.Column(db.Integer, db.ForeignKey('department.deptID'))
tix_severity = db.Column(db.Integer, nullable=False)
tix_msg = db.Column(db.String(500), nullable=False)
tix_status = db.Column(db.String(10), nullable=False)
tix_recv_date = db.Column(db.String(20), nullable=False)
tix_recv_time = db.Column(db.Integer, nullable=False)
# define relationship
department = db.relationship('Departments')
# Department Table
class Departments(db.Model):
__tablename__ = 'department'
deptID = db.Column(db.Integer, primary_key=True, autoincrement=True, unique=True)
dept_name = db.Column(db.String(40), nullable=False)
dept_empl = db.Column(db.String(40), nullable=False)
dept_empl_phone = db.Column(db.Integer, nullable=False)
Then my Flask-Admin
views are:
admin.add_view(TicketAdminView(Tickets, db.session, menu_icon_type='glyph', menu_icon_value='glyphicon-home'))
admin.add_view(DepartmentAdminView(Departments, db.session))
Admin Panel for Tickets:
Single Ticket Edit:
How would I go about showing the Department
name instead of the memory location?
回答1:
Define function __repr__
of Department
.
class Department(db.Model)
# ... column definition
def __repr__(self):
return self.name
The __repr__
will show the name of department instead the inner representation of object.
PS: uselist=0
is the key to define a one to one relationship in SQLAlchemy.
来源:https://stackoverflow.com/questions/43332521/creating-one-to-one-relationship-flask-sqlalchemy