I've learned a little about django pagination from here : https://docs.djangoproject.com/en/2.0/topics/pagination/#page-objects
And I want to know how to get the number of items in certain Page object.
I thought a way like this : Page.end_index() - Page.start_index() + 1
But I think maybe it is not good or inaccurate way to get result.
Is there good way to get correct result?
Something vaguely similar to:
Paginator(query, objects_per_page, current_page_number)
And then pass the resulting paginator object into the template.
Inside the paginator's init you'd want to do something similar to:
def __init__(self, query, objects_per_page, current_page_number):
self.total = query.count()
self.per_page = objects_per_page
self.current_page_number = current_page_number
self.lower_limit = objects_per_page * current_page_number
self.upper_limit = objects_per_page * (current_page_number + 1)
if self.upper_limit > self.total:
self.upper_limit = self.total
self.objects = query[self.lower_limit - 1:self.upper_limit - 1]
Then in the template you'd do something like this:
Showing {{paginator.lower_limit}}-{{paginator.upper_limit}} of {{paginator.total}}
I hope that gives you a general idea of how you can cleanly do this.
In template:
{{ page_obj.paginator.count }} # The total number of objects, across all pages
{{ page_obj.paginator.per_page }} # The number of objects every page
{{ page_obj.paginator.num_pages }} # The total number of pages.
