lesson 52

ap_12/core/urls.py

@@ -21,7 +21,7 @@ from webapp import views
 urlpatterns = [
     path('admin/', admin.site.urls),
     path('', views.IndexRedirectView.as_view(), name='redirect_to_index'),
-    path('articles', views.IndexView.as_view(), name='index'),
+    path('articles', views.IndexListView.as_view(), name='index'),
     path('articles/add', views.ArticleCreateView.as_view(), name='articles_add'),
     path('articles/<int:id>', views.ArticleDetailView.as_view(), name='articles_detail'),
     path('articles/<int:id>/update', views.ArticleUpdateView.as_view(), name='articles_update'),

ap_12/templates/base.html

@@ -34,6 +34,10 @@
                     <a class="nav-link" href="#">Disabled</a>
                 </li>
                 </ul>
+                <form class="d-flex">
+                    <input class="form-control me-2" name="search" type="search" placeholder="Search" aria-label="Search">
+                    <button class="btn btn-outline-success" type="submit">Search</button>
+                </form>
             </div>
         </div>
     </nav>

ap_12/templates/index.html

@@ -13,5 +13,8 @@
             {% endfor %}
     </div>
 
+    {% if is_paginated %}
+        {% include 'partial/pagination.html' %}
+    {% endif %}
 
 {% endblock %}
\ No newline at end of file

ap_12/templates/partial/pagination.html

+<div class="d-flex justify-content-center">
+    <nav aria-label="...">
+        <ul class="pagination">
+            {% if page_obj.has_previous %}
+                <li class="page-item">
+                    <a class="page-link" href="?{% if query_params %}{{ query_params }}{% endif %}&page={{ page_obj.previous_page_number }}">
+                        Previous
+                    </a>
+                </li>
+            {% else %}
+                <li class="page-item disabled">
+                    <a class="page-link" href="#">Previous</a>
+                </li>
+            {% endif %}
+            
+            {% for num in paginator.page_range %}
+
+                {% if page_obj.number == num %}
+                    <li class="page-item active" aria-current="page">
+                        <a class="page-link" href="?{% if query_params %}{{ query_params }}{% endif %}&page={{ num }}">{{ num }}</a>
+                    </li>
+                {% else %}
+                    <li class="page-item" aria-current="page">
+                        <a class="page-link" href="?{% if query_params %}{{ query_params }}{% endif %}&page={{ num }}">{{ num }}</a>
+                    </li>
+                {% endif %}
+            
+            {% endfor %}
+
+            {% if page_obj.has_next %}
+                <li class="page-item">
+                    <a class="page-link" href="?{% if query_params %}{{ query_params }}{% endif %}&page={{ page_obj.next_page_number }}">
+                        Next
+                    </a>
+                </li>
+            {% else %}
+                <li class="page-item disabled">
+                    <a class="page-link" href="#">Next</a>
+                </li>
+            {% endif %}
+
+        </ul>
+    </nav>
+</div>
\ No newline at end of file

ap_12/templates/partial/search.html

+<form class="text-center" action="" method="get">
+    <label for="{{ form.search.id_for_label }}">
+        {{ form.search.label }}:
+    </label>
+    {{ form.search }}
+
+    <button class="btn btn-submit">Search</button>
+</form>
\ No newline at end of file

ap_12/webapp/forms.py

@@ -14,3 +14,7 @@ class ArticleForm(forms.ModelForm):
             raise ValidationError('Text should not duplicate title')
 
         return super().clean()
+
+
+class SearchForm(forms.Form):
+    search = forms.CharField(max_length=100, required=False, label='Найти')

ap_12/webapp/views.py

 from typing import Any
+from urllib.parse import urlencode
+from django.db.models.query import QuerySet
 from django.http.response import HttpResponse as HttpResponse
 from django.shortcuts import render, get_object_or_404, redirect
 from django.urls import reverse
 from django.views import generic
+from django.db.models import Q
 
-from webapp.forms import ArticleForm
+from webapp.forms import ArticleForm, SearchForm
 from webapp.models import Article
 
 
@@ -19,6 +22,45 @@ class IndexView(generic.View):
         return render(request, 'index.html', context)    
 
 
+class IndexListView(generic.ListView):
+    template_name = 'index.html'
+    context_object_name = 'articles'
+    model = Article
+    ordering = ['-created_at']
+    paginate_by = 5
+    paginate_orphans = 1
+    
+    def get(self, request, *args, **kwargs):
+        self.form = SearchForm(self.request.GET)
+        self.search_value = None
+
+        if self.form.is_valid():
+            self.search_value = self.form.cleaned_data['search']
+
+        return super().get(request, *args, **kwargs)
+
+    def get_context_data(self, *, object_list=None, **kwargs):
+        context = super().get_context_data(object_list=None, **kwargs)
+        context['form'] = self.form
+        
+        if self.search_value:
+            context['query_params'] = urlencode({'search': self.search_value})
+        
+        return context
+    
+    def get_queryset(self):
+        qs = super().get_queryset()
+        
+        if self.search_value:
+            query = (
+                Q(title__icontains=self.search_value) 
+                | Q(author__icontains=self.search_value)
+            )
+            qs = qs.filter(query).distinct()
+
+        return qs
+
+
 class ArticleDetailView(generic.TemplateView):
     template_name = 'articles/detail.html'