flask-sqlalchemy

问题 I'm writing an API in Flask with 1000+ requests to get data and I'd like to limit the number of requests per second. I tried with: conn = aiohttp.TCPConnector(limit_per_host=20) and conn = aiohttp.TCPConnector(limit=20) But is seems doesn't work My code looks like this: import logging import asyncio import aiohttp logging.basicConfig(filename="logfilename.log", level=logging.INFO, format='%(asctime)s %(levelname)s:%(message)s') async def fetch(session, url): async with session.get(url,

问题 I have a preexisting database that I'm using with SQLAlchemy, so I'm using automap to get the Models from the database. What is the best way to add methods to these classes? For example, for a User class, I'd like to add methods such as verifying the password. Also, I'd like to add methods for flask-login (UserMixin) methods. 回答1: Specify your classes explicitly beforehand, and define your methods as you would normally: Base = automap_base() class User(Base): __tablename__ = 'user' def verify

问题 I have a preexisting database that I'm using with SQLAlchemy, so I'm using automap to get the Models from the database. What is the best way to add methods to these classes? For example, for a User class, I'd like to add methods such as verifying the password. Also, I'd like to add methods for flask-login (UserMixin) methods. 回答1: Specify your classes explicitly beforehand, and define your methods as you would normally: Base = automap_base() class User(Base): __tablename__ = 'user' def verify

问题 Basically what i want to do is, join 2 tables 'users' & 'company' and get the users with their relevant company details . this is the user model: class User(db.Model): __tablename__ = 'user' id = db.Column(db.Integer, primary_key=True, autoincrement=True) firstname = db.Column(db.String(10), nullable=False) lastname = db.Column(db.String(25), nullable=False) username = db.Column(db.String(250), nullable=False) email = db.Column(db.String(100), nullable=False) password = db.Column(db.String

问题 Main.py from flask_sqlalchemy import SQLAlchemy app = Flask(__name__) app.config['SECRET_KEY'] = '123' app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db' app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False db = SQLAlchemy(app) class User(db.Model): __table_name__ = 'user' id = db.Column(db.Integer, primary_key=True) username = db.Column(db.String(80), unique=True) password = db.Column(db.String(80)) def __init__(self, username, password): self.username = username self.password =

问题 This question already has an answer here : Need classic mapper example for SqlAlchemy single table inheritance (1 answer) Closed 3 years ago . I need to use the classical mapping instead of the declarative, for the last two days I am trying to make inheritance work, I tried with the declarative style and it worked but whatever I tried I cant get it to work when using the old mapping style. class Item(object): def specialised_method(self): return "I am not special" class SpecialisedItem(Item):

问题 I am trying to build a query that takes form data and removes any None or " " submissions but I'm not sure how to approach the logic. Here is the code; @app.route('/filterassets', methods=['GET', 'POST']) def searchassets(): form = FilterAssetsForm() results = None if request.method == "POST": if form.validate_on_submit(): try: horsepower = form.horsepower_search.data voltage = form.voltage_search.data rpm = form.rpm_search.data results = Motor.query.filter_by(horsepower=horsepower, voltage

问题 I'm following the flask-sqlalchemy tutorial on declaring models regarding one-to-many relationship. The example code is as follows: class Person(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(50)) addresses = db.relationship('Address', backref='person', lazy='dynamic') class Address(db.Model): id = db.Column(db.Integer, primary_key=True) email = db.Column(db.String(50)) person_id = db.Column(db.Integer, db.ForeignKey('person.id')) Now I'm wondering how to

问题 I'm following the flask-sqlalchemy tutorial on declaring models regarding one-to-many relationship. The example code is as follows: class Person(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(50)) addresses = db.relationship('Address', backref='person', lazy='dynamic') class Address(db.Model): id = db.Column(db.Integer, primary_key=True) email = db.Column(db.String(50)) person_id = db.Column(db.Integer, db.ForeignKey('person.id')) Now I'm wondering how to

问题 I'm following the flask-sqlalchemy tutorial on declaring models regarding one-to-many relationship. The example code is as follows: class Person(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(50)) addresses = db.relationship('Address', backref='person', lazy='dynamic') class Address(db.Model): id = db.Column(db.Integer, primary_key=True) email = db.Column(db.String(50)) person_id = db.Column(db.Integer, db.ForeignKey('person.id')) Now I'm wondering how to