Flask工厂函数

Flask工厂函数

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我的目录结构

flask_project

    -- config
        -- __init__.py
        -- config.py
        -- settings.py
        
    -- other_app
        ...
        
    -- manage.py
    

基本示例

• config.py

定义工厂函数

from flask import Flask
from config.settings import config
from api.views import api


def create_app(config_name):
    app = Flask(__name__)
    app.config.from_object(config[config_name])
    # 日志
    register_logging(app)
    # 注册蓝图
    register_blueprints(app)
    # 数据库
    register_database(app)
    # 异常处理
    register_errors(app)
    # 注册自定义命令
    register_commands(app)

    return app


def register_logging(app):
    pass


def register_blueprints(app):
    app.register_blueprint(api, url_prefix='/api')


def register_database(app):
    pass


def register_errors(app):
    pass


def register_commands(app):
    pass

• settings.py

不同环境的配置(测试/生产/正式)

class BaseConfig:
    TEST = True
    NUM = 10


config = {

    'default': BaseConfig
}

• manage.py

总入口

from config.config import create_app


if __name__ == '__main__':

    app = create_app('default') # 默认环境
    print(app.config['NUM']) # 获取定义变量NUM
    
    app.run()