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Pymitter integration in Morepath

Project description

more.emit: pymitter integration in Morepath

This package provides Morepath integration for pymitter.

pymitter is a Python port of the extended Node.js EventEmitter 2 approach providing namespaces, wildcards and TTL.

Quick start

Install more.emit:

$ pip install -U more.emit

Extend your App class from EmitApp:

from more.pony import EmitApp

class App(EmitApp):

Now you can define signals:

from .app import App

def handler1(arg, request):
    print('handler1 called with', arg)

def handler2(arg, request):
    print('handler2 called with', arg)

You can emit the signals for example from the view:

def root_view(self, request):'myevent', 'foo', request)
    return {
        'name': 'Root'


An example for emitting signals on user creation and user update for sending a confirmation email. This example uses more.pony.

from .app import App

def send_confirmation_email(user, request):
    mailer ='mailer')
    mailer.send_confirmation_email(user, request)

@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)

        def after(response):
  'user.email_updated', user, request)
            response.status = 201

        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']):
        def after(response):
            response.status = 409

        return {
            'validationError': 'Email already exists'

        if 'email' in request.json:
            self.email_confirmed = False

            def after(response):
      'user.email_updated', self, request)


0.2 (2020-04-26)

  • Removed: Removed support for Python 2.

    You have to upgrade to Python 3 if you want to use this version.

  • Added support for Python 3.6, 3.7 and 3.8 and PyPy 3.6.

  • Make Python 3.7 the default testing environment.

  • Add integration for the Black code formatter.

0.1 (2017-04-22)

  • Initial public release.

Project details

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