more.emit 0.2

快速入门

安装 more.emit

$ pip install -U more.emit

从EmitApp扩展您的App类

from more.pony import EmitApp

class App(EmitApp):
    pass

现在您可以定义信号

from .app import App


@App.signal.on('myevent')
def handler1(arg, request):
    print(request)
    print('handler1 called with', arg)

@App.signal.on('myevent')
def handler2(arg, request):
    print('handler2 called with', arg)

您可以从视图等地方发出信号

@App.json(model=Root)
def root_view(self, request):
    request.app.signal.emit('myevent', 'foo', request)
    return {
        'name': 'Root'
    }

示例

这是一个在创建用户和更新用户时发送确认电子邮件的信号发出示例。此示例使用more.pony。

signal.py

from .app import App


@App.signal.on('user.email_updated')
def send_confirmation_email(user, request):
    mailer = request.app.service(name='mailer')
    mailer.send_confirmation_email(user, request)

view.py

@App.json(model=UserCollection, request_method='POST')
def user_collection_add(self, request):
    email = request.json['email']

    if not User.exists(email=email):
        user = self.add(email=email)

        @request.after
        def after(response):
            request.app.signal.emit('user.email_updated', user, request)
            response.status = 201

    else:
        @request.after
        def after(response):
            response.status = 409

        return {
            'validationError': 'Email already exists'
        }


@App.json(model=User, request_method='PUT')
def user_update(self, request):
    if 'email' in request.json and User.exists(email=request.json['email']):
        @request.after
        def after(response):
            response.status = 409

        return {
            'validationError': 'Email already exists'
        }

    else:
        self.update(request.json)
        if 'email' in request.json:
            self.email_confirmed = False

            @request.after
            def after(response):
                request.app.signal.emit('user.email_updated', self, request)

0.2 (2020-04-26)

• 删除：删除了对Python 2的支持。

  如果您想使用此版本，必须升级到Python 3。

• 添加了对Python 3.6、3.7和3.8以及PyPy 3.6的支持。

• 将Python 3.7作为默认测试环境。

• 添加了对Black代码格式化器的集成。

0.1 (2017-04-22)

• 首次公开发布。