taggit in Django CBV

views.py

from django.shortcuts import render, get_object_or_404
from .models import Post
from django.views.generic import ListView
from taggit.models import Tag

def post_list(request, tag_slug=None):
    object_list = Post.published.all()
    tag = None


    if tag_slug:
        tag = get_object_or_404(Tag, slug=tag_slug)
        object_list = object_list.filter(tags__name__in=[tag]) # filter the all retrive objects depend on tags

urls.py

 path('', views.post_list, name='post_list'),
 path('tag/<slug:tag_slug>/',views.post_list, name='post_list_by_tag'),

how can I convert this code into CBV and the results are when I click on any tags in website show me all posts that related to this tag in my DB this code above does that but I want to use CBV instead of FBV 

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