#!/usr/bin/env python
from django.utils.html import mark_safe
class
paginator
(object):
''' @：obj_all ---userinfo.objects.all()
@：per_page_count ---每頁顯示數量
@：show_page_count ---顯示頁碼的數量
@：base_url ---url字首
'''def__init__
(self, obj_all, base_url, per_page_count=10, show_page_count=11):
self.per_page_count = per_page_count
self.show_page_count = show_page_count
self.obj_all = obj_all
self.obj_list=
self.page_html = ''
self.total_item_count = ''
self.base_url = base_url
defpage
(self, current_page):
start = (current_page - 1) * self.per_page_count # 當前頁 - 1 * 每頁數量 正好為上乙個結束位置，作為這一次的開始
end = current_page * self.per_page_count # 當前頁 * 每頁數量 為這一次結束
self.obj_list= self.obj_all[start:end]
self.total_item_count = self.obj_all.count()
max_page_num, b = divmod(self.total_item_count, self.per_page_count)
if b:
max_page_num += 1
page_list =
# 首頁
to_start = '首頁
' % self.base_url
if current_page == 1:
'else:
' % (self.base_url, current_page - 1)
# 開始頁碼結束頁碼計算
half_show_page_count = int(self.show_page_count / 2) # 顯示頁碼除以2，取整數，算出當前頁前後各顯示多少
if max_page_num < self.show_page_count: # 如果總頁碼小於顯示頁碼數量，page_end按總頁碼來計算
page_start = 1
page_end = max_page_num
else:
if current_page <= half_show_page_count: # 如果當前頁前面不夠要顯示的頁碼，page_start從1開始，結束為要顯示頁碼數量
page_start = 1
page_end = self.show_page_count
else:
if max_page_num - current_page <= half_show_page_count: # 如果當前頁後邊不夠要顯示的頁碼，結束為最後一頁，開始為最後一頁減去要顯示的頁碼數量+1
page_start = max_page_num - self.show_page_count + 1
page_end = max_page_num
else:
page_start = current_page - half_show_page_count # 頁碼足夠的時候，開始：當前頁減去前邊要顯示的，結束：當前頁加上後邊要顯示的
page_end = current_page + half_show_page_count
# 生成頁碼html
for page in range(page_start, page_end + 1):
if page == current_page: # 如果page為當前頁，active
tpl = '%s
' % (self.base_url, page, page)
else:
tpl = '%s
' % (self.base_url, page, page)
if current_page == max_page_num:
'else:
' % (self.base_url, current_page + 1)
# 尾頁
to_end = '尾頁
' % (self.base_url, max_page_num)
self.page_html = mark_safe(''.join(page_list))
if __name__ == "__main__":
page = paginator(userinfo.objects.all(), 5, 11)
page.page(int(request.get.get("page", 1)))
page.obj_list---資料
page.page_html ---頁碼樣式
page.total_item_count ---據總頁數
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