dreamy lily
I have the following Flask folder structure. With the main.py containing:
import os
from api import create_app
if name == "main":
app = create_app()
app.run(debug=True, port=os.getenv("PORT", default=5000))
When deployed to railway, I got the following deploy log: Failed to find attribute 'app' in 'main'.
If I deploy without using create_app(), it works, but create_app() handles lots of configuration for the app.
hardy gustBOT
bitter spadeBOT
dreamy lily
c6894929-c040-4842-8c83-4516d57a14fe
thorny mantle
if name == "main"
dreamy lily
when i copied to discord, the underscores are gone, it's: name == "main"
dreamy lily
you mean outside the: if name == "main"?
dreamy lily
"""
Flask App Factory
This module provides a factory function create_app to create and configure a Flask app.
The app is configured based on the specified environment using the get_config function from
the config module. The following extensions are initialized:
The app registers several blueprints for organizing routes:
After configuration, the app context is updated with the current app's configuration.
Example Usage:
app = create_app(environment="production")
"""
import os
from flask import Flask, current_app, jsonify
from flask_migrate import Migrate
from flask_cors import CORS
from config import get_config
from api.extensions import db, jwt
from api.routes import auth_bp, users_bp, projects_bp, subscriptions_bp
def create_app():
"""Create and configure the Flask app."""
app = Flask(__name__)
# Load configuration based on the specified environment
flask_env = os.getenv("FLASK_ENV")
app.config.from_object(get_config(flask_env))
# Initialize the database extension
db.init_app(app)
# Initialize the migration extension
Migrate(app, db)
# Enable CORS for all routes
CORS(app)
# Initialize the JWT extension
jwt.init_app(app)
# Register the blueprints with a specified prefix
app.register_blueprint(auth_bp)
app.register_blueprint(users_bp)
app.register_blueprint(projects_bp)
app.register_blueprint(subscriptions_bp)
# Set the configuration in the current app context
with app.app_context():
current_app.config.update(app.config)
return app
yeah declare it outside if statement
dreamy lily
I am getting the config from config.py that contains multiple configurations for multiple enivronments (development, tes, production...)
thorny mantle
yeah declare it outside if statement
Try this.
dreamy lily
I am deploying now
that error is gone, but now: flask_env = os.getenv("FLASK_ENV") retunrs None
how i get the flask env dynamically from railway app?
thorny mantle
Share screen shot
dreamy lily
with: FLASK_ENV=production
dreamy lily
yes its running
thorny mantle
🙂
dreamy lily
could you also provide how to connect it to postgresql??
thorny mantle
Is the service running on railway?
dreamy lily
its like this:
thorny mantle
dreamy lily
the pguser, pgpassword are from railway, I haven't added any config myself
thorny mantle
use the non private url and you should be set.
you can use the private url but it will only work from within the project.
dreamy lily
ok I'll do. Do you know why that error comes: Access to XMLHttpRequest at 'http://127.0.0.1:5000/auth/login' from origin 'http://localhost:5173' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
==> it's in local development
I'm enabling CORS
thorny mantle
I think that is beyond the scope of this thread but checkout Flask-CORS and it's usage.