breadcrumbs and page parenting

aircox/admin/page.py

@@ -1,10 +1,13 @@
+import urllib
+
 from django.contrib import admin
+from django.http import QueryDict
 from django.utils.safestring import mark_safe
 from django.utils.translation import gettext_lazy as _
 
 from adminsortable2.admin import SortableInlineAdminMixin
 
-from ..models import Category, Article, NavItem
+from ..models import Category, NavItem, Page
 
 
 __all__ = ['CategoryAdmin', 'PageAdmin', 'NavItemInline']
@@ -27,6 +30,9 @@ class PageAdmin(admin.ModelAdmin):
     list_filter = ('status', 'category')
     prepopulated_fields = {"slug": ("title",)}
 
+    # prepopulate fields using changelist's filters
+    prepopulated_filters = ('parent',)
+
     search_fields = ['title', 'category__title']
     fieldsets = [
         ('', {
@@ -44,6 +50,30 @@ class PageAdmin(admin.ModelAdmin):
         return mark_safe('<img src="{}"/>'.format(obj.cover.icons['64'])) \
             if obj.cover else ''
 
+    def get_changeform_initial_data(self, request):
+        data = super().get_changeform_initial_data(request)
+        filters = QueryDict(request.GET.get('_changelist_filters', ''))
+        data['parent'] = filters.get('parent', None)
+        return data
+
+    def get_common_context(self, query, extra_context=None):
+        extra_context = extra_context or {}
+        parent = query.get('parent', None)
+        if parent is not None:
+            extra_context['parent'] = Page.objects.get(id=parent)
+        return extra_context
+
+    def add_view(self, request, form_url='', extra_context=None):
+        filters = QueryDict(request.GET.get('_changelist_filters', ''))
+        extra_context = self.get_common_context(filters, extra_context)
+        return super().add_view(request, form_url, extra_context)
+
+    # TODO: change_view => parent from object
+
+    def changelist_view(self, request, extra_context=None):
+        extra_context = self.get_common_context(request.GET, extra_context)
+        return super().changelist_view(request, extra_context)
+
 
 class NavItemInline(SortableInlineAdminMixin, admin.TabularInline):
     model = NavItem

aircox/templates/admin/base.html

@@ -40,7 +40,15 @@
         <div class="navbar-menu">
             {% block usertools %}
             <div class="navbar-start">
-                <a class="navbar-item" href="{% url "admin:aircox_program_changelist" %}">{% trans "Programs" %}</a>
+                <div class="navbar-item has-dropdown is-hoverable">
+                    <a class="navbar-link" href="{% url "admin:aircox_program_changelist" %}">{% trans "Programs" %}</a>
+                    <div class="navbar-dropdown is-boxed">
+                        {% for program in programs %}
+                        <a class="navbar-item" href="{% url "admin:aircox_program_change" program.pk %}">
+                            {{ program.title }}</a>
+                        {% endfor %}
+                    </div>
+                </div>
 
                 <div class="navbar-item has-dropdown is-hoverable">
                     <a class="navbar-link" href="{% url "admin:aircox_article_changelist" %}">{% trans "Articles" %}</a>

aircox/templates/admin/change_list.html

@@ -29,7 +29,14 @@
 <div class="breadcrumbs">
     <a href="{% url 'admin:index' %}">{% trans 'Home' %}</a>
     &rsaquo; <a href="{% url 'admin:app_list' app_label=cl.opts.app_label %}">{{ cl.opts.app_config.verbose_name }}</a>
+    {% if parent %}
+    &rsaquo; <a href="{% url cl.opts|admin_urlname:'changelist' %}">{{ cl.opts.verbose_name_plural|capfirst }}</a>
+    <b>&rsaquo; {{ parent.title }}</b>
+    {% else %}
     &rsaquo; {{ cl.opts.verbose_name_plural|capfirst }}
+    {% endif %}
+
+
 </div>
 {% endblock %}
 {% endif %}

aircox/templates/aircox/page_list.html

@@ -15,6 +15,7 @@
 {% endblock %}
 
 {% block filters %}
+{# FIXME #}
 {% if filter_categories %}
 <form method="GET" action="" class="navbar-menu">
     <div class="navbar-start">