flask-sqlalchemy

I'm trying to setup flask-admin model views with SQLAlchemy against 'user' and 'role' models. Instead of a function admin view I'm getting: ValueError: Invalid model property name <class 'app.models.Role'>.desc Stack trace: Traceback (most recent call last): File "/Users/dbg/Projects/Python/Current/ziff/flaskbase/manage.py", line 18, in <module> app = create_app(os.getenv('APP_CONFIG') or 'default') File "/Users/dbg/Projects/Python/Current/ziff/flaskbase/app/__init__.py", line 49, in create_app admin.add_view(RoleAdmin(Role, db.session)) File "/usr/local/share/anaconda/envs/flaskbase27/lib

How do I get the number of rows affected for an update statement with sqlalchemy? (I am using mysql and python/pyramid): from sqlalchemy.engine.base import ResultProxy @classmethod def myupdate(cls, id, myvalue): DBSession.query(cls).filter(cls.id == id).update({'mycolumn': myvalue}) if ResultProxy.rowcount == 1: return True else: return False Note: I saw this post but according to the docs : "The ‘rowcount’ reports the number of rows matched by the WHERE criterion of an UPDATE or DELETE statement."....in other words, it doesn't return the number of rows affected by the update or delete

For testing purposes, I clear (delete) every table before executing code. for table in reversed(db.metadata.sorted_tables): engine.execute(table.delete()) do_stuff() However, the new data's id values start from where the previous id 's left off: First iteration: id | value -----+--------- 1 | hi 2 | there Second iteration (delete table, insert new data): id | value -----+--------- 3 | good 4 | day Is there any way to reset the id count when I delete the table? EDIT: seems I broke it, table is not cleared at all now config.py SQLALCHEMY_DATABASE_URI = 'postgresql://postgres:myPassword@localhost

I want to migrate flask_dance with my application to make the user authorize using google and another social networks. I am getting this error: Cannot get OAuth token without an associated user Before i do the connection between the blueprint and sqlalchemy backend, the application worked just fine, if i removed the google_blueprint.backend line the error disappear. Here is my __init__.py : import os from flask import Flask, redirect, url_for, current_app from flask_login import current_user from develop.models import ( db, User, OAuth ) from flask_dance.contrib.google import make_google

Problem: there needs to be full working example of auto-mapping sqlalchemy to an existing database in an app with multiple binds. I want to bind to two databases and have one auto-map the tables. I need to do this because i don't have control over one DB, thus would have to constantly re-write my models and might delete new tables every time i migrate. I love the answers given here , but i can't seem to make it work in Flask (I am able to use the sqlalchemy only to query as per the example). The model.py I set up from the example above results in EDIT I pulled the line db.Model.metadata

I currently have multiple databases with identical Tables and Columns (but different data inside). So clearly I need to use binds to access all of them, but it's apparently not as simple as doing this: class WhateverTable(db.Model): __tablename__ = 'whatevertable' whatever = db.Column(db.String(255)) def __init__(self, bind=None): self.__bind_key__ = bind and then later calling: WhateverTable(bind='bind_key_here').query.filter_by(whatever='whatever').first() Is there a way I can do this easily? I've tried inheriting from a table class and then defining the bind there, and while that works, it