自定義分頁器的使用

01、page.py

#

from ..models import article, articleupdown, article2tag, comment, category, userinfo, blog, tag
import
copy
class
pagination(object):
def__init__(self, current_page, all_count, request, per_page=10, max_pager_num=11):
""":param current_page:當前頁
:param all_count: 所有資料總數
:param request:
:param per_page: 每一頁顯示的資料條數
:param max_pager_num: 這個頁面最多顯示的頁碼數量
num_pages:總資料所分頁的總頁面數
"""#
減少小於的時候，讓其展示頁面1的資料
try:
current_page =int(current_page)
except
exception as e:
current_page = 1
if current_page < 1:
current_page = 1self.current_page =current_page
self.all_count =all_count
self.per_page = per_page  #
每一頁顯示的資料條數
#計算總頁數
print("計算"
,all_count,per_page)
num_pages, tmp = divmod(all_count, per_page)  #
多的一條資料也展示一頁
print
(num_pages,tmp)
iftmp:
num_pages += 1self.num_pages =num_pages
self.max_pager_num = max_pager_num  #
最大顯示的頁數
self.page_count_half = int((self.max_pager_num - 1) / 2)  #
最多顯示頁數的一半
self.params =copy.deepcopy(request.get)
print("
urlencode
", self.params.urlencode())
@property
defstart(self):
return (self.current_page - 1) *self.per_page
@property
defend(self):
return self.current_page *self.per_page
defpage_html(self):
#如果總頁數小於11
if self.num_pages <=self.max_pager_num:
pager_start = 1pager_end = self.num_pages + 1
else
:            
if self.current_page <=self.page_count_half:
pager_start = 1pager_end = self.max_pager_num + 1
#當前頁大於5
elif (self.current_page + self.page_count_half) >self.num_pages:
pager_start = self.num_pages - self.max_pager_num + 1pager_end = self.num_pages + 1
else
:                pager_start = self.current_page -self.page_count_half
pager_end = self.current_page + self.page_count_half + 1page_html_list =
#        self.params["
page
"] = 1first_page = '
' %(self.params.urlencode())
print("
*****==
", ''
.join(page_html_list))
return
''.join(page_html_list)

02.views.py

from .page import

pagination
defpag01(request):
print
(request.get)
#總數all_count =book.objects.all()
current_page = request.get.get("
page")
print("
2>>
", current_page)
pagination = pagination(current_page, all_count.count(), request, per_page=2)
print("
---"
, pagination.page_html)
#當前頁面的所有資料的顯示範圍
current_page_obj =book.objects.all()[pagination.start:pagination.end]
print("
當前頁面的所有資料〉〉
",current_page_obj)
return render(request, "index.html
", locals())

03、index.html

doctype html
>
<
html 
lang
="en"
>
<
head
>
<
meta 
charset
="utf-8"
>
<
title
>自定義分頁器
title
>
<
link 
rel="stylesheet"
href
=""integrity
="sha384-bvyiisifek1dgmjrakycuhahrg32omucww7on3rydg4va+pmstsz/k68vbdejh4u"
crossorigin
="anonymous"
>
head
>
<
h1>自定義分頁器
h1>
<
body
>
<
div>
<
ul>
<
li>}:}
li>
ul>
div>
<
div 
class
="page_region pull-right"
>
}div
>
body
>
html
>

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自定義分頁器

簡單直接，上 在專案的根目錄下新建乙個包 帶有 init py檔案的資料夾 或者直接將下面的pagenation包複製到你的專案中 新建乙個py檔案，如 pagenation.py 匯入元件 mark safe 自定義類 param request request物件 param all count...

自定義分頁器

class pagination object def init self,current page,all count,per page num 2,pager count 11 封裝分頁相關資料 param current page 當前頁 param all count 資料庫中的資料總條數 ...