我有一个可以在开发中使用的应用程序,但是当我尝试使用Gunicorn运行它时,会出现错误,即" sqlalchemy扩展名未注册"。根据我的阅读,我似乎需要在某个地方拨打app.app_context()
,但我不知道在哪里。如何解决此错误?
# run in development, works
python server.py
# try to run with gunicorn, fails
gunicorn --bind localhost:8000 server:app
AssertionError: The sqlalchemy extension was not registered to the current application. Please make sure to call init_app() first.
server.py
:
from flask.ext.security import Security
from database import db
from application import app
from models import Studio, user_datastore
security = Security(app, user_datastore)
if __name__ == '__main__':
# with app.app_context(): ??
db.init_app(app)
app.run()
application.py
:
from flask import Flask
app = Flask(__name__)
app.config.from_object('config.ProductionConfig')
database.py
:
from flask.ext.sqlalchemy import SQLAlchemy
db = SQLAlchemy()
答案 0 :(得分:11)
只有当您使用python sever.py
启动应用时,if __name__ == '__main__':
块才会被点击,您可以在其中使用您的应用注册数据库。
您需要在该区域之外移动该行db.init_app(app)
。