flask-sqlalchemy

Say I have a Postgres database with two different schema's, one called public and one called development . I know at the class level I can set __table_args__ = {"schema":"schema_name"} for each model, but if I wanted to switch from development to prod. wouldn't I haven't to update all my models? Is there a way to set the schema for the dev and prod schemas in flask? Or should I just create another database as a dev database and just backup the prod database to the development database? Assuming there's something in the config along the lines of PRODUCTION = False/True, then you should be able

Using automap_base from sqlalchemy.ext.automap to map my tables. Not able to shema.dumps(result) ; getting raise TypeError(f'Object of type {o.__class__.__name__} ' TypeError: Object of type Decimal is not JSON serializable Tried using JSON custom decoders, but no use. from flask import Flask from flask_sqlalchemy import SQLAlchemy from sqlalchemy.orm import Session from sqlalchemy.ext.automap import automap_base from flask_marshmallow import Marshmallow app = Flask(__name__) app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db' db = SQLAlchemy(app) ma = Marshmallow(app) engine = db

I am currently developing a server using Flask/SqlAlchemy. It occurs that when an ORM model is not present as a table in the database, it is created by default by SqlAlchemy. However when an ORM class is changed with for instance an extra column is added, these changes do not get saved in the database. So the extra column will be missing, every time I query. I have to adjust my DB manually every time there is a change in the models that I use. Is there a better way to apply changes in the models during development? I hardly think manual MySql manipulation is the best solution. you can proceed

I have an app that runs on flask and uses sqlalchemy to interact with the data base. I want to update the columns of a table with the user specified values. The query that I am using is def update_table(value1, value2, value3): query = update(Table).where(Table.column1 == value1).values(Table.column2 = value2, Table.column3 = value3) I am not sure if the way I am passing values is correct. Also the Table.column2/3 i=gives error saying Can't assign to function call . Where column2/3 are not functions, they're field names. So, how do I update multiple values and why is it giving error here? PS:

I've three tables User, Device and Role. I have created a many-to-many relation b/w User and Device like this; #Many-to-Many relation between User and Devices userDevices = db.Table("user_devices", db.Column("id", db.Integer, primary_key=True), db.Column("user_id", db.Integer, db.ForeignKey("user.id")), db.Column("device_id", db.Integer, db.ForeignKey("device.id")))) class User(db.Model): __tablename__ = 'user' id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(60), index=True, unique=True) devices = db.relationship("Device", secondary=userDevices, backref=db.backref(

Consider the following table which iterates data from an sqlite database using flask and sqlalchemy . Assume for this example that the data is a list of invoices and clicking on each row opens a collapsible bootstrap accordion whith further information for the clicked invoice. <table class="table table-hover" data-toggle="table"> <thead> <tr> <th>Date</th> <th>Invoice</th> </tr> </thead> <tbody> <tr data-toggle="collapse" data-target="#accordion" class="clickable"> {% for inv in invoices %} <td> {{ inv.number }} </td> </tr> <tr> <td> <div id="accordion" class="collapse"> {{ inv.data }} </div>