권한 제어

페이지 분할기(paginator)

>>> from django.core.paginator import Paginator
>>> objects = ['john', 'paul', 'george', 'ringo']
>>> p = Paginator(objects, 2)# ， obj， 
>>> p.count# obj 
4
>>> p.num_pages# 
2
>>> p.page_range# 
[1, 2]
>>> page1 = p.page(1)# 
>>> page1

>>> page1.object_list# obj 
['john', 'paul']
 
>>> page2 = p.page(2)
>>> page2.object_list
['george', 'ringo']
>>> page2.has_next()# 
False
>>> page2.has_previous()# 
True
>>> page2.has_other_pages()# 
True
>>> page2.next_page_number()# ， ， 
Traceback (most recent call last):
...
EmptyPage: That page contains no results

def my_pagination(request, queryset, display_amount=15, after_range_num = 5,bevor_range_num = 4):
    # 
    paginator = Paginator(queryset, display_amount)
    try:
        # request page 
        page =int(request.GET.get('page'))
    except:
        # 1
        page = 1
    try:
        # 
        objects = paginator.page(page)
    # 
    except EmptyPage:
        # 
        objects = paginator.page(paginator.num_pages)
    # 
    except PageNotAnInteger:
        # 
        objects = paginator.page(1)
    # 
    if page >= after_range_num:
        page_range = paginator.page_range[page-after_range_num:page+bevor_range_num]
    else:
        page_range = paginator.page_range[0:page+bevor_range_num]
    return objects,page_range