Heroku / Flask / Postgres:无法连接到服务器

时间:2014-05-16 21:54:02

标签: python postgresql heroku flask

我是flask / Heroku的新手,并使用postgres / sqlalchemy部署应用程序。我正在使用flask-migrate(基于alembic构建)进行数据库迁移。 Everythign在本地工作正常,即使从工头开始,但我无法在Heroku服务器上运行。我相信它与数据库连接和Flask-migrate有关,但我不确定。在这几个小时,并搜索SO无济于事。我知道我犯了一个愚蠢的错误。

安装Heroku Postgres之前出错 -

OperationalError: Could not connect to server: Connection refused  Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP connections on port 5432?
Heroku Postgres安装后

错误 -

2014-05-16T21:26:14.408879+00:00 app[web.1]:    Is the server running on host "localhost" (127.0.0.1) and accepting
2014-05-16T21:26:14.408880+00:00 app[web.1]:    TCP/IP connections on port 5432?

这是我的项目结构

myproject/
    -app
        -__init__.py
        -forms.py
        -helper.py
        -views.py
        -models.py
        -static/
        -templates/
     -config.py
     -run.py
     -Procfile
     -requirements.txt
     -migrations/

这是我的 init .py:

from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.script import Manager, Server
from flask.ext.migrate import Migrate, MigrateCommand

from flask.ext.admin import Admin

app = Flask(__name__)
app.config.from_object('config')
db = SQLAlchemy(app)
admin = Admin(app)

migrate = Migrate(app, db)

manager = Manager(app)
manager.add_command('db', MigrateCommand)

from app import views, models, forms, helper

这是我的config.py文件:

import os

DEBUG = True

basedir = os.path.abspath(os.path.dirname(__file__))

CSRF_ENABLED = True
CSRF_SESSION_KEY = '**********'

ADMINS = frozenset(['myemail'])
SECRET_KEY = '*******'

if os.environ.get('DATABSE_URL') is None:
    SQLALCHEMY_DATABASE_URI = 'postgresql+psycopg2://******@localhost/myproject'
else:
    SQLALCHEMY_DATABASE_URI = os.environ['DATABASE_URL']

run.py

#!/usr/bin/env python
from app import manager
manager.run()

Procfile最后但并非最不重要:

web: gunicorn app:app

1 个答案:

答案 0 :(得分:3)

选择数据库网址时出现拼写错误:

if os.environ.get('DATABSE_URL') is None:

而不是

if os.environ.get('DATABASE_URL') is None: