use django filters + search filter; still need adapts sub-page list views

aircox/filters.py

@@ -0,0 +1,26 @@
+from django.utils.translation import gettext_lazy as _
+import django_filters as filters
+
+from .models import Page, Episode
+
+
+class PageFilters(filters.FilterSet):
+    q = filters.CharFilter(method='search_filter', label=_('Search'))
+    
+    class Meta:
+        model = Page
+        fields = {
+            'category__id': ['in'],
+            'pub_date': ['exact', 'gte', 'lte'],
+        }
+
+    def search_filter(self, queryset, name, value):
+        return queryset.search(value)
+
+
+class EpisodeFilters(PageFilters):
+    class Meta:
+        model = Episode
+        fields = {
+        }
+

aircox/models/page.py

@@ -53,6 +53,11 @@ class PageQuerySet(InheritanceQuerySet):
         return self.filter(parent=parent) if id is None else \
                self.filter(parent__id=id)
 
+    def search(self, q, search_content=True):
+        if search_content:
+            return self.filter(models.Q(title__icontains=q) | models.Q(content__icontains=q))
+        return self.filter(title__icontains=q)
+
 
 class BasePage(models.Model):
     """ Base class for publishable content """

aircox/templates/aircox/base.html

@@ -57,6 +57,19 @@ Usefull context:
                             {% endblock %}
                         </div>
                         <div class="navbar-end">
+                            {% block top-nav-end %}
+                            <div class="navbar-item">
+                                <form action="{% url 'page-list' %}" method="GET">
+                                    <div class="control has-icons-left">
+                                        <span class="icon is-small is-left">
+                                            <i class="fa fa-search"></i>
+                                        </span>
+                                        <input type="text" name="q" class="input"
+                                            placeholder="{% trans "Search" %}" />
+                                    </div>
+                                </form>
+                            </div>
+                            {% endblock %}
                             {% block top-nav-tools %}
                             {% endblock %}
                         </div>

aircox/templates/aircox/basepage_list.html

@@ -24,48 +24,7 @@
 
 {% block main %}{{ block.super }}
 
-{% block before_list %}
-{% if filters %}
-<form method="GET" action="" class="media">
-    <div class="media-content">
-        {% block filters %}
-        {% for label, name, choices in filters %}
-        <div class="field is-horizontal">
-            <div class="field-label">
-                <label class="label">{{ label }}</label>
-            </div>
-            <div class="field-body">
-                <div class="field is-narrow">
-                    <div class="control">
-                        {% for label, value, checked in choices %}
-                        <label class="checkbox">
-                            <input type="checkbox" class="checkbox" name="{{ name }}"
-                                   value="{{ value }}"
-                                   {% if checked %}checked{% endif %} />
-                            {{ label }}
-                        </label>
-                        {% endfor %}
-                    </div>
-                </div>
-            </div>
-        </div>
-        {% endfor %}
-        {% endblock %}
-    </div>
-    <div class="media-right">
-        <div class="field is-grouped is-grouped-right">
-            <div class="control">
-                <button class="button is-primary"/>{% trans "Apply" %}</button>
-            </div>
-            <div class="control">
-                <a href="?" class="button is-secondary">{% trans "Reset" %}</a>
-            </div>
-        </div>
-    </div>
-</form>
-{% endif %}
-
-{% endblock %}
+{% block before_list %}{% endblock %}
 
 <section role="list">
 {% block pages_list %}

aircox/templates/aircox/page_list.html

@@ -2,3 +2,62 @@
 {% comment %}Display a list of Pages{% endcomment %}
 {% load i18n aircox %}
 
+{% block before_list %}
+{{ block.super }}
+
+{% if view.has_filters %}
+<form method="GET" action="" class="media">
+    <div class="media-content">
+        {% block filters %}
+        <div class="field is-horizontal">
+            <div class="field-label">
+                <label class="label">{% trans "Search" %}</label>
+            </div>
+            <div class="field-body">
+                <div class="field">
+                    <div class="control has-icons-left">
+                        <span class="icon is-small is-left">
+                            <i class="fa fa-search"></i>
+                        </span>
+                        <input class="input" type="text" name="q"
+                            value="{{ filterset_data.q }}"
+                            placeholder="{% trans "Search content" %}">
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div class="field is-horizontal">
+            <div class="field-label">
+                <label class="label">{% trans "Categories" %}</label>
+            </div>
+            <div class="field-body">
+                <div class="field is-narrow">
+                    <div class="control">
+                        {% for label, value in categories %}
+                        <label class="checkbox">
+                            <input type="checkbox" class="checkbox" name="category__id__in"
+                                   value="{{ value }}"
+                                   {% if value in filterset_data.category__id__in %}checked{% endif %} />
+                            {{ label }}
+                        </label>
+                        {% endfor %}
+                    </div>
+                </div>
+            </div>
+        </div>
+        {% endblock %}
+    </div>
+    <div class="media-right">
+        <div class="field is-grouped is-grouped-right">
+            <div class="control">
+                <button class="button is-primary"/>{% trans "Apply" %}</button>
+            </div>
+            <div class="control">
+                <a href="?" class="button is-secondary">{% trans "Reset" %}</a>
+            </div>
+        </div>
+    </div>
+</form>
+{% endif %}
+{% endblock %}
+

aircox/views/mixins.py

@@ -80,3 +80,31 @@ class AttachedToMixin:
                              .published().first()
         return super().get_page()
 
+
+class FiltersMixin:
+    """ Mixin integrating Django filters' filter set """
+    filterset = None
+    filterset_class = None
+
+    def get_filterset(self, data, query):
+        return self.filterset_class(data, query)
+    
+    def get_queryset(self):
+        query = super().get_queryset()
+        if self.filterset_class:
+            self.filterset = self.get_filterset(self.request.GET.copy(), query)
+            return self.filterset.qs
+        return query
+
+    def get_context_data(self, **kwargs):
+        filterset = kwargs.setdefault('filterset', self.filterset)
+        if filterset.is_valid():
+            kwargs['filterset_data'] = filterset.form.cleaned_data
+        else:
+            kwargs['filterset_data'] = {}
+
+        params = self.request.GET.copy()
+        kwargs['get_params'] = params.pop('page', True) and params
+        return super().get_context_data(**kwargs)
+
+

aircox/views/page.py

@@ -5,11 +5,12 @@ from django.views.generic import DetailView, ListView
 
 from honeypot.decorators import check_honeypot
 
+from ..filters import PageFilters
 from ..forms import CommentForm
 from ..models import Category, Comment
 from ..utils import Redirect
 from .base import BaseView
-from .mixins import AttachedToMixin, ParentMixin
+from .mixins import AttachedToMixin, FiltersMixin, ParentMixin
 
 
 __all__ = ['BasePageListView', 'BasePageDetailView', 'PageDetailView', 'PageListView']
@@ -71,50 +72,32 @@ class BasePageDetailView(BaseView, DetailView):
         return self.object
 
 
-class PageListView(BasePageListView):
+class PageListView(FiltersMixin, BasePageListView):
     """ Page list view. """
+    filterset_class = PageFilters
     template_name = None
     has_filters = True
     categories = None
     filters = None
 
-    def get(self, *args, **kwargs):
-        self.categories = set(self.request.GET.getlist('categories'))
-        self.filters = set(self.request.GET.getlist('filters'))
-        return super().get(*args, **kwargs)
-
     def get_template_names(self):
         return super().get_template_names() + ['aircox/page_list.html']
 
+    def get_filterset(self, data, query):
+        # FIXME: not the most efficient, cause join then split (in django filters)
+        data['category__id__in'] = ','.join(data.getlist('category__id__in'))
+        return super().get_filterset(data, query)
+
     def get_queryset(self):
         qs = super().get_queryset().select_related('category') \
                                    .order_by('-pub_date')
-
-        # category can be filtered based on request.GET['categories']
-        # (by id)
-        if self.categories:
-            qs = qs.filter(category__slug__in=self.categories)
         return qs
 
-    def get_filters(self):
-        categories = self.model.objects.published() \
-                               .filter(category__isnull=False) \
-                               .values_list('category', flat=True)
-        categories = [ (c.title, c.slug, c.slug in self.categories)
-                        for c in Category.objects.filter(id__in=categories) ]
-        return (
-            (_('Categories'), 'categories', categories),
-        )
-
     def get_context_data(self, **kwargs):
-        if not 'filters' in kwargs:
-            filters = self.get_filters()
-            for label, fieldName, choices in filters:
-                if choices:
-                    kwargs['filters'] = filters
-                    break;
-            else:
-                kwargs['filters'] = tuple()
+        kwargs['categories'] = self.model.objects.published() \
+                                   .filter(category__isnull=False) \
+                                   .values_list('category__title', 'category__id') \
+                                   .distinct()
         return super().get_context_data(**kwargs)
 
 
@@ -151,6 +134,5 @@ class PageDetailView(BasePageDetailView):
         comment = form.save(commit=False)
         comment.page = self.object
         comment.save()
-
         return self.get(request, *args, **kwargs)