Python+Flaskに、ORMのSQLAlchemyを設定

from flask import Flask
from flask_sqlalchemy import SQLAlchemy

# 初期設定
app.config.update(dict(
  SQLALCHEMY_DATABASE_URI = 'sqlite:////path/to/flaskr.db',
))

# DB接続
db = SQLAlchemy(app)

# モデルの定義
class Entry(db.Model):
  __tablename__ = 'entries'
  id = db.Column(db.Integer, primary_key=True)
  title = db.Column(db.String(500), unique=True)
  text = db.Column(db.Text(), unique=True)

  def __init__(self, title=None, text=None):
    self.title = title
    self.text = text

  def __repr__(self):
    return '<Title %r>' % (self.title)

@app.route('/')
def index():
  # 接続
  entries = Entry.query.all()
  return render_template('index.html', entries=entries)