How to extract a number from a url

[Sourajit Mohanty]

I want to extract the number from this url 'music/6/newsongs/' so that I can use that number to redirect it to another page..
How can I do that??

[shiva kumar]

Use 

<int: Id> in place of number

An add extra parameter in views which u will relate this to

On Thu 6 Dec, 2018 2:18 am Sourajit Mohanty <smohan...@gmail.com wrote:

I want to extract the number from this  url 'music/6/newsongs/' so that I can use that number to redirect it to another page..
How can I do that??

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[Sourajit Mohanty]

I am working with Class based Views..so I dont think this is gonna work

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[Pankaj Kumar]

Try using regular expression (?P<id>[0-9]+)
similar to this:

url(r'^music/(?P<id>[0-9]+)/newsongs$', views.your_view_function())


cheers!

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[Sourajit Mohanty]

I am using Model forms..

class CreateSong(CreateView)

       model=Song

       fields=['song_title']

So this class is gonna call the model Song class..how can i pass the album_id??

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[Jason]

you have to set up the URL with it in your urls.py to map to the view method.  

what that does is tells django you want the regex in the url path you defined to be the parameter you send to the view method

pk_url_kwarg = 'pk'

set that in your view, and ensure the url definition you have maps to `pk`  like

path('music/<int:album_id>/newsongs$', views.CreateSong.as_view())

[Sourajit Mohanty]

But how do I access the pk_url_kwarg(ie. the album_id) in the respective model??

I have a model class Song and I need 2 access the album_id in the get_absolute_url()

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