flask-sqlalchemy

I want to make a new table in my database (Oracle 11g but the Express Edition for Ubuntu 16.04) using Python and Flask framework with the SQLAlchemy module. The first field of the table it's and ID, is an Integer field and I want it to autoincrement, but Oracle database don't support the autoincrement. I have a form to add a new comment, but when I try to add a new record it reports a error: sqlalchemy.exc.IntegrityError: (cx_Oracle.IntegrityError) ORA-01400: cannot insert NULL into ("WIKTOR"."TBL_COMENTARIOS"."ID") [SQL: 'INSERT INTO tbl_comentarios (usuario, comentario, fecha) VALUES (

I'm trying to build an admin control panel that brings together 4 different ecommerce sites. The sites all have identical database structures (all MySQL). What's Going Wrong? I get 404 Not Found on any order ID and site I put in. No matter how I mix it I can not get any record to come up. Always a 404 and I have no idea why. SO here I am. Code I tried to do this by creating base model classes of every table. Then creating inherited clases of those base classes with a different bind key dependent on the DB it is meant for. This is a summarised view of the code - if you'd need anymore than this

I'm trying out Flask but I'm having the error sqlalchemy.exc.InterfaceError: <unprintable InterfaceError object> while submitting a wtforms. The model class is: class Post(db.Model): __tablename__ = 'blog_posts' id = db.Column(db.Integer, unique=True, primary_key=True) title = db.Column(db.String(50), unique=False) content = db.Column(db.Text, unique=False) user_id = db.Column(db.String, db.ForeignKey('users.username')) @staticmethod def post_new_entry(title, content, user_id): """ Post new entry to database """ new_post = Post(title=title, content=content, user_id=user_id) db.session.add(new

I'm having troubles on loading JSON data to a datatable. Here it is my Python code to perform that (do the query to the database and return that data with jsonify): @users_blueprint.route('/data') def data(): """Return server side data.""" # defining columns columns = [ ColumnDT(User.firstname), ColumnDT(User.lastname), ColumnDT(User.email), ColumnDT(User.urole) ] # defining the initial query users = db.session.query(User).all() # GET parameters params = request.args.to_dict() # instantiating a DataTable for the query and table needed rowTable = DataTables(params, users, columns) print "AHHAX"

This may be totally stupid thing to ask but I have such a requirement in my model where atleast either category or parent_category is not null My model looks like class BudgetCategories(db.Model): __tablename__ = 'budget_categories' uuid = Column('uuid', GUID(), default=uuid.uuid4, primary_key=True, unique=True) budget_id = Column(GUID(), ForeignKey('budgets.uuid'), nullable=False) budget = relationship('Budget', backref='budgetCategories') category = Column('category', sa.types.String, nullable=True) parent_category = Column('parent_category', sa.types.String, nullable=True) amount = Column(

I am trying to make a circular one-to-one relationship (not sure what the correct term is) with SQLAlchemy that looks the following: class Parent(Base): __tablename__ = 'parents' id = db.Column(Integer, primary_key=True) child_id = db.Column(db.Integer,db.ForeignKey("children.id", use_alter=True)) child = db.relationship("Child", uselist=False, foreign_keys=[child_id], post_update=True) class Child(Base): __tablename__ = 'children' id = db.Column(db.Integer, primary_key=True) parent_id = db.Column(db.Integer, db.ForeignKey("parents.id")) user = db.relationship("Parent", uselist=False, foreign