Amélioration du nom affiché pour le filtre sur les Chronologies

collection/games/admin.py

@@ -80,10 +80,33 @@ class GameAdmin(admin.ModelAdmin):
     get_platform.admin_order_field = 'collection__shortname'
 
 
+class TimelinePlatformFilter(admin.SimpleListFilter):
+    """
+    Display Platform shortname.
+    """
+    title = _('platform')
+    parameter_name = 'collection'
+
+    def lookups(self, request, model_admin):
+        """
+        Get all platforms
+        """
+        return [(x.id, x.shortname) for x in Platform.objects.all()]
+
+    def queryset(self, request, queryset):
+        """
+        Filter on 'shortname' field.
+        """
+        if self.value():
+            return queryset.filter(item__collection__id=self.value())
+        else:
+            return queryset
+
+
 class TimelineAdmin(admin.ModelAdmin):
     list_display = ('date', 'status', 'item', 'get_platform')
     search_fields = ('item__name', )
-    list_filter = ('item__collection__shortname', )
+    list_filter = (TimelinePlatformFilter, )
 
     def get_platform(self, obj):
         """