在win7上设置带烧瓶的postgres

Question

我正在开发基于http://code.tutsplus.com/tutorials/intro-to-flask-signing-in-and-out--net-29982的烧瓶应用程序。

作为Tut的一部分，我试图连接到postgres服务器，其结构如截图所示。我已经添加了一张表格＆your 39; yournewdb＆＃39;你可以看到。

根据tut，我的主文件中包含以下代码（＆＃39; routes.py＆＃39;）：

app.config['SQLALCHEMY_DATABASE_URI'] = "postgresql://postgres:123@localhost/yournewdb"

from models import db
db.init_app(app)

@app.route('/testdb')
def testdb():
  if db.session.query("1").from_statement("SELECT 1").all():
    return 'It works.'
  else:
    return 'Something is broken.'

models.py：

from flask.ext.sqlalchemy import SQLAlchemy
from werkzeug import generate_password_hash, check_password_hash

db = SQLAlchemy()

class User(db.Model):
  __tablename__ = 'users'
  uid = db.Column(db.Integer, primary_key = True)
  firstname = db.Column(db.String(100))
  lastname = db.Column(db.String(100))
  email = db.Column(db.String(120), unique=True)
  pwdhash = db.Column(db.String(54))

  def __init__(self, firstname, lastname, email, password):
    self.firstname = firstname.title()
    self.lastname = lastname.title()
    self.email = email.lower()
    self.set_password(password)

  def set_password(self, password):
    self.pwdhash = generate_password_hash(password)

  def check_password(self, password):
    return check_password_hash(self.pwdhash, password)

当我转到http://127.0.0.1:5000/testdb时，我收到内部服务器错误。调试器给出：

C:\envs\virtalenvs\flask_mini\lib\site-packages\flask_sqlalchemy\__init__.py:800: UserWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True to suppress this warning.
  warnings.warn('SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True to suppress this warning.')
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
C:\envs\virtalenvs\flask_mini\lib\site-packages\sqlalchemy\sql\elements.py:3779: SAWarning: Textual SQL expression 'SELECT 1' should be explicitly declared as text('SELECT 1') (this warning may be suppressed after 10 occurrences)
  {"expr": util.ellipses_string(element)})

我做错了什么？

Answer 1

似乎你连接到桌子而不是数据库，对吗？为什么不将yournewdb更改为postgres或创建新的数据库？你还是要做你的桌子。您可以让SQLAlchemy为您执行此操作。这是一个很好的答案：https://stackoverflow.com/a/20749534/2326132

我建议为每个项目创建一个新数据库，即使它们都是测试项目。你会遇到更少的问题。