Question

I’m looking for a way to expose the pager limit as a form within admin views by adding a query argument such as &?pager_limit=50 or something similar so it can merge happily with the various exposed filters.

I haven’t really made any headway at all at solving the problem myself. I’ve been trawling through contrib.admin and contrib.users.admin and not able to find what I’m looking for.

Thanks

Answer 1

In order to make list_per_page dynamic we need to subclass ChangeList since the default ChangeList class sets the list_per_page once.

For instance:

class CustomUserChangeList(ChangeList):
    def __init__(self, request, model, list_display, list_display_links,
                 list_filter, date_hierarchy, search_fields, list_select_related,
                 list_per_page, list_max_show_all, list_editable, model_admin):
        list_per_page = get_user_list_limit()
        super(CustomUserChangeList, self).__init__(request, model, list_display, list_display_links,
            list_filter, date_hierarchy, search_fields, list_select_related,
            list_per_page, list_max_show_all, list_editable, model_admin)

Then override get_changelist in the ModelAdmin subclass:

class CustomUserAdmin(UserAdmin):

    def get_changelist(self, request, **kwargs):
        return CustomUserChangeList