Алексей Исмаилов

for i in items:
  print i.UserItem.id

items = db.session.query(U, I).join(I).filter(U.id == user_id)

from sqlalchemy import Column, Integer, String
>>> class User(Base):
...     __tablename__ = 'users'
...
...     id = Column(Integer, primary_key=True)
...     name = Column(String)
...     fullname = Column(String)
...     password = Column(String)
...
...     def __repr__(self):
...        return "<User(name='%s', fullname='%s', password='%s')>" % (
...                             self.name, self.fullname, self.password)

from sqlalchemy import inspect
...
def __repr__(self):
        mapper = inspect(self).mapper
        ent = []
        for col in mapper.column_attrs:
            ent.append("{0}={1}".format(col.key, getattr(self, col.key)))
        return "<{0}(".format(self.__class__.__name__) + ", ".join(ent) + ")>"

session.query(UserItem.id, UserItem.date, UserItem.item_name, Lang.desc_rus, User.email).join(User, Lang)

rows = Weather.query.outerjoin(User, Weather.ray_id==User.id).order_by(User.name.asc())

rows = Weather.query.outerjoin(User).order_by(User.name.asc())

from flask import Flask, render_template
from flask.ext.sqlalchemy import SQLAlchemy
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///tst.db'
db = SQLAlchemy(app)

import datetime

class User(db.Model):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100))
    username = db.Column(db.String(120), unique=True)
    password = db.Column(db.String(120))

    def __init__(self, name, username, password):
        self.name = name
        self.username = username
        self.password = password

class Weather(db.Model):
    __tablename__ = 'weather'
    id = db.Column(db.Integer, primary_key=True)
    ray_id = db.Column(db.Integer, db.ForeignKey('users.id'))
    ray = db.relationship('User', backref=db.backref('weather_current', uselist=False))   
    putdate = db.Column(db.DateTime)
    sost = db.Column(db.String(250))
    temp = db.Column(db.String(150))

    def __init__(self, ray_id, putdate, sost, temp):
        self.ray_id = ray_id
        self.putdate = putdate
        self.sost = sost
        self.temp = temp
db.drop_all()
db.create_all()

u = User("usertest2", 'testuser2', '123')

db.session.add(u)
db.session.commit()
db.session.add(Weather(u.id, datetime.datetime.now(), 'test', '123'))
db.session.add(Weather(None, datetime.datetime.now(), 'test', '123'))
db.session.commit()
        
@app.route('/', methods = ['GET', 'POST'])
def weather():
    rows = Weather.query.outerjoin(User).order_by(User.name.asc())
    return render_template("weather.html",
        rows = rows)
if __name__ == "__main__":
    app.run(debug=True)

<table>
{% for row in rows %}
  <tr>
  <td align=left>{{ row.ray.name }}</td>
  <td>{{ row.putdate }}</td>
  <td>{{ row.sost }}</td>
  <td>{{ row.temp }}</td>
  <td>{{ row.ray.username }}</td>
  </tr>
 {% endfor %}
</table>

from flask import Flask, render_template
from flask.ext.sqlalchemy import SQLAlchemy as SA

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql+mysqlconnector://user:pass@localhost:3306/app_db'
db = SA(app)

from sqlalchemy import create_engine

db.metadata.reflect(db.engine)
from Classes import *

@app.route('/')
def get_index():
    Users.query.all()
    return 'Hello World!'

if __name__ == '__main__':
    app.run(debug=True)
    pass