Added article, category and taglist views.

articles/views.py

@@ -1 +1,42 @@
-# Create your views here.
+from django.shortcuts import get_object_or_404
+from django.views.generic import DetailView, ListView
+
+from .models import Article, Category
+
+
+class ArticleList(ListView):
+    category = None
+    tag = None
+    paginate_by = 9
+
+    def get_queryset(self):
+        category_slug = self.kwargs.get('category', None)
+        self.tag = self.kwargs.get('tag', None)
+        if category_slug:
+            self.category = get_object_or_404(Category, slug=category_slug)
+            return Article.objects.filter(category=self.category).filter(is_published=True)
+        elif self.tag:
+            return Article.objects.filter(tags=self.tag).filter(is_published=True)
+        else:
+            return Article.objects.filter(is_published=True)
+
+    def get_context_data(self, *, object_list=None, **kwargs):
+        context = super(ArticleList, self).get_context_data(**kwargs)
+        context['category'] = self.category
+        context['tag'] = self.tag
+        return context
+
+
+class ArticleDetail(DetailView):
+    model = Article
+
+
+class CategoryList(ListView):
+    model = Category
+
+
+class TagList(ListView):
+    template_name = 'articles/tag_list.html'
+
+    def get_queryset(self):
+        return Article.tags.tag_model.objects.all()