Django: How Can I get 'pk' in views.py when I use class based views?-CodePudding

I'm writhing an app with class based views. I need to receive 'pk' in my views.py file when I load my page using generic DetailView.

My urls.py file:

from django.urls import path
from . views import HomeView, ProfileView, AddPetView, EditPetView, DeletePetView, 
PetProfileView

urlpatterns = [
...
path('profile/pet/<int:pk>', PetProfileView.as_view(), name='pet_profile'),
path('', HomeView.as_view(), name='home'),
]

My views.py file:

from django.shortcuts import render
from django.views.generic import TemplateView, ListView, UpdateView, CreateView, DeleteView, 
DetailView
from django.urls import reverse_lazy
from . models import Pet

class PetProfileView(DetailView):
    model = Pet
    template_name = 'pet_profile.html'
    #key = Pet.objects.values_list('birth_date').get(pk=1)

I need to extract from database birh_date column for this specific pet. How to get this pk=? when I load pet_profile page?

I'm not sure if I can describe the case well. If something is not clear, ask me. I will try to explain again.

CodePudding user response：

On class based views:

self.kwargs['pk']

So, in your case

class PetProfileView(DetailView):
    model = Pet
    template_name = 'pet_profile.html'
    def get_key(self):
        Pet.objects.values_list('birth_date').get(pk=self.kwargs['pk'])

You can access to your key inside the class with this function:

key = self.get_key()

CodePudding user response：

As already mentioned you can access the URL parameters like self.kwargs["pk"]. But as you are already using a DetailView which already provides the functionality to retrieve an object via its id you can customize the queryset it uses:

class PetProfileView(DetailView):
    model = Pet
    template_name = 'pet_profile.html'
    queryset = Pet.objects.values_list('birth_date')

(Though without doing this you should also be able to access pet.birth_date in your template)