flask-sqlalchemy

I've got a simple User model, defined like so: # models.py from datetime import datetime from myapp import db class User(db.Model): id = db.Column(db.Integer(), primary_key=True) email = db.Column(db.String(100), unique=True) password = db.Column(db.String(100)) date_updated = db.Column(db.DateTime()) def __init__(self, email, password, date_updated=None): self.email = email self.password = password self.date_updated = datetime.utcnow() When I create a new User object, my date_updated field gets set to the current time. What I'd like to do is make it so that whenever I save changes to my User

I am trying to follow this example to have an enum column in a table that uses Python's Enum type. I define the enum then pass it to the column as shown in the example, but I get ValueError: <enum 'FruitType'> is not a valid Enum . How do I correctly define a SQLAlchemy enum column with a Python enum? from flask import Flask from flask_sqlalchemy import SQLAlchemy import enum app = Flask(__name__) db = SQLAlchemy(app) class FruitType(enum.Enum): APPLE = "Crunchy apple" BANANA = "Sweet banana" class MyTable(db.Model): id = db.Column(db.Integer, primary_key = True) fruit_type = db.Column(enum

I'm just getting started with Flask / Flask-WTF / SQLAlchemy, and most example CRUD code I see shows separate templates for adding / editing. It seems repetitive to have two templates with almost identical form html (e.g. books_add.html, books_edit.html). Conceptually it makes more sense to me to have one template, something like "books_form.html", and just call render_template on that same template from two separate route definitions. I'm not quite sure how to accomplish it though, something like: @app.route('/books/add') def add_book(): ... render_template('books_form.html', action = 'add')

I can query my Seat table for all seats where there is no invite assigned: seats = Seat.query.filter_by(invite=None).all() However, when querying for all seats that have an invite assigned, I get a NameError : seats = Seat.query.filter_by(invite!=None).all() NameError: name 'invite' is not defined Here is my Seat class: class Seat(db.Model): id = db.Column(db.Integer, primary_key=True) invite_id = db.Column(db.Integer, db.ForeignKey('invite.id')) invite = db.relationship('Invite', backref=db.backref('folks', lazy='dynamic')) How can I query for all seats where the owner is not blank? Nathan

My application uses a combination of Flask, Flask-SQLAlchemy, Flask-WTF and Jinja2. In its current incarnation, I have a settings table. The table will only have one record with one field. Initially the table contains zero records. What I want to achieve is: Given that no entries exist in db, then show empty form ready for user input Given that an entry exist, show the entry, and if the user changes the value, then update the rec in db. Here is my code: models.py class Provider(db.Model): id = db.Column(db.Integer, primary_key = True) rssfeed = db.Column(db.String(120), unique = True) def _

I'm unable to find a module in python ,though easy_install says its already installed. Any idea how to resolve this isseue? $ python -c "from flaskext.sqlalchemy import SQLAlchemy" Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: No module named sqlalchemy $ python -V Python 2.7 $ sudo easy_install sqlalchemy Searching for sqlalchemy Best match: SQLAlchemy 0.7.7 Adding SQLAlchemy 0.7.7 to easy-install.pth file Using /usr/lib/python2.7/site-packages Processing dependencies for sqlalchemy Finished processing dependencies for sqlalchemy $ sudo pip install

I am building an app using Flask & SQLAlchemy. I basically have 3 tables: users, friendships and bestFriends: A user can have many friends but only one best friend. So I want my model to be relational. 'One-to-many' for the relation between 'users' and 'friendships' & 'one-to-one' between 'users' and 'bestFriends'. This is my Model: from app import db from sqlalchemy.orm import relationship, backref from sqlalchemy import Table, Column, Integer, ForeignKey from sqlalchemy.ext.declarative import declarative_base class users(db.Model): __tablename__ = "Users" id = db.Column(db.Integer, primary

I'm trying to use alembic to handle local migrations on my project. It worked the first time, but then I needed to delete the folder and restart.(don't ask why, I just had to) I'm following this tutorial and I run the command python manage.py db init And it was ok. But when I try to run python manage.py db migrate I'm getting this error: alembic.util.CommandError: Can't locate revision identified by '31b8ab83c7d' Now, it seems that alembic is looking for a revision that doesn't exists anymore. There is anyway to make alembic forget that file? Or like restart the comparison from None to -> auto