I can't seem to figure out why my call to db.create_all() is not working.
I have an app package with following init:
from flask import Flask
from config import config
from flask.ext.sqlalchemy import SQLAlchemy
# create the database object
db = SQLAlchemy()
# this function is the application factory
def create_app(environment):
app = Flask(__name__)
app.config.from_object(config[environment])
db.init_app(app)
from bp_root import bp_root
from bp_aws import bp_aws
app.register_blueprint(bp_root, url_prefix='/')
app.register_blueprint(bp_aws, url_prefix='/aws')
return app
Then I have models.py inside the app package:
from datetime import datetime
from . import db
class MyTestClass(db.Model):
__tablename__ = 'mytesttable'
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(64), nullable=False, unique=True, index=True)
username = db.Column(db.String(64), nullable=False, unique=True, index=True)
is_admin = db.Column(db.Boolean)
password_hash = db.Column(db.String(128))
location = db.Column(db.String(64))
member_since = db.Column(db.DateTime, default=datetime.utcnow)
bio = db.Column(db.Text())
def __init__(self, email, username):
self.email = email
self.username = username
def __repr__(self):
return '<User %r>' % self.username
app.config contains, among other things, the following:
'SQLALCHEMY_DATABASE_URL': 'sqlite:////Users/xxxxx/projects/yyyyy/data-dev.sqlite'
Then if I fire up my interactive shell, you can see objects exist appropriately and call to db.create_all() appears to work, but results in no database creation:
$ ./manage.py shell
>>> from app import db
>>> from app import models
>>> app
<Flask 'app'>
>>> db
<SQLAlchemy engine='sqlite://'>
>>> models
<module 'app.models' from '/Users/xxxxx/projects/yyyyy/app/models.py'>
>>> dir(models)
['MyTestClass', '__builtins__', '__doc__', '__file__', '__name__', '__package__', 'datetime', 'db']
>>> db.create_all()
>>>
Any thoughts on why the database isn't getting created?
The setting should be SQLALCHEMY_DATABASE_URI
, not URL
. You can see that the db doesn't have the right uri when you ran this line:
>>> db
<SQLAlchemy engine='sqlite://'>
It shows that Flask-SQLAlchemy defaulted to an in-memory sqlite database. Change the setting and it will work.
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