CODEWITHSUNDEEP
pythonpyramid
Alexey
Alexey

Reputation: 1438

How can i build a route in Pyramid

I'm using pyramid_handlers for routing, controller.py:

import pyramid_handlers
from blue_yellow_app.controllers.base_controller import BaseController
from blue_yellow_app.services.albums_service import AlbumsService


class AlbumsController(BaseController):
    @pyramid_handlers.action(renderer='templates/albums/index.pt')
    def index(self):
        # data / service access
        all_albums = AlbumsService.get_albums()

        # return the model
        return {'albums': all_albums}

And I've registered in __init__.py like this:

from pyramid.config import Configurator
import blue_yellow_app.controllers.controller as albums


def main(_, **settings):
    config = Configurator(settings=settings)
    config.include('pyramid_chameleon')
    config.include('pyramid_handlers')

    config.add_handler(
        'albums' + 'ctrl_index', '/' + 'albums',
        handler=albums.AlbumsController, action='index')
    config.add_handler(
        'albums' + 'ctrl_index/', '/' + 'albums' + '/',
        handler=albums.AlbumsController, action='index')
    config.add_handler(
        'albums' + 'ctrl', '/' + 'albums' + '/{id}',
        handler=albums.AlbumsController)

Now how can I add new controller view for one certain album? I've tried to add new view like this:

import pyramid_handlers
from blue_yellow_app.controllers.base_controller import BaseController
from blue_yellow_app.services.albums_service import AlbumsService


class AlbumsController(BaseController):
    @pyramid_handlers.action(renderer='templates/albums/index.pt')
    def index(self):
        # data / service access
        all_albums = AlbumsService.get_albums()

        # return the model
        return {'albums': all_albums}

    @pyramid_handlers.action(
        name='albums/{id}',
        renderer='templates/albums/item.pt')
    def album(self):
        print ('test')
        return {}

But it doesn't work. How to add view for rout albums/{id}?

Upvotes: 1

Views: 100

Answers (1)

Michael Kennedy
Michael Kennedy

Reputation: 3380

Looks like this code is from my Python for Entrepreneurs course. Let's focus on the add_handler section. The generic form of the function is:

 config.add_handler(NAME, URL, handler=HANDLER, action=OPTIONAL_ACTION_METHOD)

You want to map the URL /albums/rock-classics to the action method def album(self). In the add_handler call you have:

config.add_handler(
    'albumsctrl', '/' + 'albums' + '/{id}',
    handler=albums.AlbumsController)

The problem is two-fold:

You do not specify the action either in the routing values or in the function call. You should have:

# via add_handler, url: /albums/rock-classics
config.add_handler(
     'albumsctrl', '/albums/{id}',
     handler=albums.AlbumsController, action=album)

or 

# via route, url: /albums/album/rock-classics
config.add_handler(
     'albumsctrl', '/albums/{action}/{id}',
     handler=albums.AlbumsController)

Second problem is your name in the action method itself

 @pyramid_handlers.action(
     name='albums/{id}', <----- PROBLEM: this is not a valid action name
     renderer='templates/albums/item.pt')
 def album(self):
     print ('test')
     return {}

It should either duplicate name='album' or just be the name of the method as:

 @pyramid_handlers.action(renderer='templates/albums/item.pt')
 def album(self):
     print ('test')
     return {}

Upvotes: 1

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