flask-sqlalchemy

I am trying to set a default role when a user registers with my site, currently no roles are set when the user registers. I have created the roles I need, so I just need to define it somehow. Not sure how though. The code I have is pretty much copy paste from the quick start guide. Anyway, here it is: # Define models roles_users = db.Table('roles_users', db.Column('user_id', db.Integer(), db.ForeignKey('user.id')), db.Column('role_id', db.Integer(), db.ForeignKey('role.id'))) class Role(db.Model, RoleMixin): id = db.Column(db.Integer(), primary_key=True) name = db.Column(db.String(80), unique

In my flask application with flask-sqlalchemy i need to create association between two contact here is my Contact model class Contact(db.Model): __tablename__ = 'contact' id = db.Column(db.Integer, primary_key=True) name = db.Column(db.Unicode(120), nullable=False, unique=False) user_id = db.Column(db.Integer, db.ForeignKey('user.id')) to_contacts = db.relationship('Contact', secondary='ContactRelation', primaryjoin='id==contactrelation.c.from_contact_id', secondaryjoin='id==contactrelation.c.to_contact_id', backref='from_contacts') and my association class ContactRelation : class

it's the first time i am using this environment. The part of SQLAlchemy i am willing to use is just the one that allows me to query the database using Table objects with autoload = True. I am doing this as my tables already exist in the DB (mysql server) and were not created by defining flask models. I have gone through all the documentation and i don't seem to find an answer. Here is some code: app = Flask(__name__) app.config.from_object(__name__) metadata = None def connect_db(): engine = create_engine(app.config['DATABASE_URI']) global metadata metadata = MetaData(bind=engine) return

Problem I am building an app on Flask, Flask-SQLAlchemy, and Flask-Restless. I have used restless to generate an API for a parent-child-grandchild relationship*. A GET on my child will correctly fetch the grandchild, but a GET on the parent will not fetch the grandchild for each child. *In fact, the parent-child relationship is a many-to-many, but same premise. Models class Grandchild(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String, nullable=False) parent = db.relationship('Child', backref='grandchild') parent_child = db.Table('parent_child', db.Column(

The Flask-SQLAlchemy docs say that many-to-many lookup tables should not subclass db.Model but instead be written as db.Tables. From the docs: If you want to use many-to-many relationships you will need to define a helper table that is used for the relationship. For this helper table it is strongly recommended to not use a model but an actual table Why? What are the downsides to making everything a model? I think it looks cleaner to have a unified way of declaring tables in the database. Also, it's possible that sometime later a developer will want to access those mapping records directly,

Say, we have the following relationships: a person can have many email addresses a email service provider can (obviously) serve multiple email address So, it's a many to many relationship. I have three tables: emails, providers, and users. Emails have two foreign ids for provider and user. Now, given a specific person, I want to print all the email providers and the email address it hosts for this person, if it exists. (If the person do not have an email at Gmail, I still want Gmail be in the result. I believe otherwise I only need a left inner join to solve this.) I figured out how to do this