在 python(flask) 中添加第二个 MySQL 连接

Question

how can i add another sql connection in python(i'm using flask)

I have such a code in init.py:

from flask import Flask
from flaskext.mysql import MySQL

app = Flask(__name__)
wsgi_app = app.wsgi_app

app.config['MYSQL_DATABASE_HOST'] = 'remotemysql.com'
app.config['MYSQL_DATABASE_USER'] = '-'
app.config['MYSQL_DATABASE_PASSWORD'] = '-'
app.config['MYSQL_DATABASE_DB'] = '-'

db = MySQL()
db.init_app(app)

from .libs import controllers

So how can i add another connection for example promoDB with another connection settings?

Answer 1

Never tried for the same DB, but you can refer https://flask-sqlalchemy.palletsprojects.com/en/2.x/binds/

SQLALCHEMY_DATABASE_URI = 'postgres://localhost/main'
SQLALCHEMY_BINDS = {
    'users':        'mysqldb://localhost/users',
    'appmeta':      'sqlite:////path/to/appmeta.db'
}