django class and function based view reference

class_and_function.py

from django.shortcuts import render,redirect
from django.http import HttpResponse
from .models import Lead
from .forms import LeadForm
from django.views.generic import ListView,DetailView,CreateView,UpdateView,DeleteView
from django.urls import reverse



# Create your views here.

def homepage(request):
    return HttpResponse('hello homepage')

class LeadListView(ListView):
    model = Lead
    context_object_name = 'leads'

class LeadDetailView(DetailView):
    context_object_name = 'lead'
    queryset = Lead.objects.all()

class LeadCreateView(CreateView):
    template_name = 'lead/lead_create.html'
    
    form_class = LeadForm

    def get_success_url(self):
        return reverse("lead:lead")
class LeadUpdateView(UpdateView):
    template_name = 'lead/lead_update.html'
    queryset = Lead.objects.all()
    form_class = LeadForm
    def get_success_url(self):
        return reverse("lead:lead")

class LeadDeleteView(DeleteView):
    template_name = 'lead/lead_delete.html'
    queryset = Lead.objects.all()
    form_class = LeadForm
    def get_success_url(self):
        return reverse("lead:lead")

def lead(request):
    leads = Lead.objects.all()
    context = {
        'leads': leads
    }
    return render(request,'lead_home.html',context)


def lead_details(request,pk):
    lead = Lead.objects.get(id=pk)
    context = {'lead': lead }
    return render(request,'lead_details.html',context)

def lead_create(request):
    form = LeadForm()
    if request.method == 'POST':
        form = LeadForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('/lead')
    context = {
        'form':form
    }
    return render(request,'lead_create.html',context)

def lead_update(request,pk):
    lead = Lead.objects.get(id=pk)
    form = LeadForm(instance=lead)
    if request.method == 'POST':
        form = LeadForm(request.POST,instance=lead)
        if form.is_valid():
            form.save()
            return redirect('/lead')
    context = {
        'form':form,
        'lead':lead
    }
    return render(request,'lead_create.html',context)
def lead_delete(request,pk):
    lead = Lead.objects.get(id=pk)
    lead.delete()
    return redirect('/lead')