Showcase of a Flask-Admin 1.5.4 regression

README.md

Showcase of a Flask-Admin 1.5.4 regression

The sample code throws an error in Flask-Admin 1.5.3 when creating a user through the UI, but doesn't throw it in 1.5.4

More details you can find in the issue.

Before running, prepare the environment:

python -m venv venv
source venv/bin/activate
pip install -r requirements.txt
flask run

And migrate the db in flask shell:

from app import db

db.create_all()

app.py

from flask import Flask
from flask_admin import Admin
from flask_admin.contrib.sqla import ModelView
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
app.config['SECRET_KEY'] = 'test'
db = SQLAlchemy(app)


class User(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)
    email = db.Column(db.String(120), unique=True, nullable=False)

    def __init__(self, *args, **kwargs):
        raise RuntimeError("Raise me!")

    def __repr__(self):
        return '<User %r>' % self.username

admin = Admin(app, name='microblog', template_mode='bootstrap3')
# Add administrative views here
admin.add_view(ModelView(User, db.session))

app.run()

requirements.txt

Flask==1.1.1
Flask-Admin==1.5.4
Flask-SQLAlchemy==2.4.1
SQLAlchemy==1.3.11