explicitly define fields attribute to fix deprecation warnings

openslides/core/views.py

@@ -189,6 +189,8 @@ class CustomSlideViewMixin(object):
     """
     Mixin for for CustomSlide Views.
     """
+    fields = ('title', 'text', 'weight', )
+
     required_permission = 'core.can_manage_projector'
     template_name = 'core/customslide_update.html'
     model = CustomSlide

openslides/mediafile/views.py

@@ -38,6 +38,8 @@ class MediafileViewMixin(object):
 
     A manager can set the uploader manually, else the request user is set as uploader.
     """
+    fields = ('mediafile', 'title', 'uploader', 'is_presentable',)
+
     model = Mediafile
     success_url_name = 'mediafile_list'
     url_name_args = []

openslides/motion/views.py

@@ -792,6 +792,8 @@ class CategoryListView(ListView):
 
 
 class CategoryCreateView(CreateView):
+    fields = ("name", "prefix",)
+
     required_permission = 'motion.can_manage_motion'
     model = Category
     success_url_name = 'motion_category_list'
@@ -799,6 +801,8 @@ class CategoryCreateView(CreateView):
 
 
 class CategoryUpdateView(UpdateView):
+    fields = ("name", "prefix",)
+
     required_permission = 'motion.can_manage_motion'
     model = Category
     success_url_name = 'motion_category_list'