class Paginator(object):
def __init__(self,totleCount,currentPage,perPageNum=4,maxPageNum=7):
# 数据总个数
self.totle_count = totleCount
# 当前页
try:
v = int(currentPage)
if v < 0:
v=1
self.current_page = v
except Exception as e:
self.current_page = 1
# 每页显示的行数
self.per_page_item_num = perPageNum
# 最大页码数
self.max_page_num = maxPageNum
def start(self):
return (self.current_page-1)*self.per_page_item_num
def end(self):
return self.current_page * self.per_page_item_num
@property
def num_pages(self):
# 总页数
a,b = divmod(self.totle_count,self.per_page_item_num)
if b == 0:
return a
return a+1
def pager_num_range(self):
# 当前页
# self.current_pager
# 最多显示页码的数量
# self.per_pager_num
# 总页数
# self.num_pages
# 如果 总页数 小于 最多显示页码数 返回 1--总页数
if self.num_pages < self.max_page_num:
return range(1, self.num_pages+1)
part = self.max_page_num//2
if self.current_page <= part:
return range(1,self.max_page_num+1)
if (self.current_page+part)>=self.num_pages:
return range(self.num_pages-part,self.num_pages+1)
return range(self.current_page-part,self.current_page+part+1)
def page_str(self):
page_list = []
page_list.append('<ul class="pagination">')
first = '<li><a href="/index?p=1" style="font-size:15px;">首页<a></li>'
page_list.append(first)
if self.current_page == 1:
prev = '<li><a href="#" style="font-size:15px;">上一页<a></li>'
else:
prev = '<li><a href="/index?p=%s" style="font-size:15px;">上一页<a></li>'%(self.current_page-1)
page_list.append(prev)
for i in self.pager_num_range():
if i == self.current_page:
temp = '<li class="active"><a href="/index?p=%s" style="font-size:30px;">%s</a></li>'%(i,i)
else:
temp = '<li><a href="/index?p=%s" style="font-size:15px;">%s</a></li>' % (i, i)
page_list.append(temp)
if self.current_page == self.num_pages:
prev = '<li><a href="#" style="font-size:15px;">下一页<a></li>'
else:
prev = '<li><a href="/index?p=%s" style="font-size:15px;">下一页<a></li>'%(self.current_page+1)
page_list.append(prev)
end = '<li><a href="/index?p=%s" style="font-size:15px;">尾页<a></li>'%(self.num_pages)
page_list.append(end)
page_list.append('</ul>')
return ''.join(page_list)
def stu_page_str(self):
page_list = []
first = '<li><a href="/students?p=1" style="font-size:15px;">首页<a></li>'
page_list.append(first)
if self.current_page == 1:
prev = '<li><a href="#" style="font-size:15px;">上一页<a></li>'
else:
prev = '<li><a href="/students?p=%s" style="font-size:15px;">上一页<a></li>'%(self.current_page-1)
page_list.append(prev)
for i in self.pager_num_range():
if i == self.current_page:
temp = '<li class="active"><a href="/students?p=%s" style="font-size:30px;">%s</a></li>'%(i,i)
else:
temp = '<li><a href="/students?p=%s" style="font-size:15px;">%s</a></li>' % (i, i)
page_list.append(temp)
if self.current_page == self.num_pages:
prev = '<li><a href="#" style="font-size:15px;">下一页<a></li>'
else:
prev = '<li><a href="/students?p=%s" style="font-size:15px;">下一页<a></li>'%(self.current_page+1)
page_list.append(prev)
end = '<li><a href="/students?p=%s" style="font-size:15px;">尾页<a></li>'%(self.num_pages)
page_list.append(end)
return ''.join(page_list)
def tea_page_str(self):
page_list = []
first = '<li><a href="/teachers?p=1" style="font-size:15px;">首页<a></li>'
page_list.append(first)
if self.current_page == 1:
prev = '<li><a href="#" style="font-size:15px;">上一页<a></li>'
else:
prev = '<li><a href="/teachers?p=%s" style="font-size:15px;">上一页<a></li>'%(self.current_page-1)
page_list.append(prev)
for i in self.pager_num_range():
if i == self.current_page:
temp = '<li class="active"><a href="/teachers?p=%s" style="font-size:30px;">%s</a></li>'%(i,i)
else:
temp = '<li><a href="/teachers?p=%s" style="font-size:15px;">%s</a></li>' % (i, i)
page_list.append(temp)
if self.current_page == self.num_pages:
prev = '<li><a href="#" style="font-size:15px;">下一页<a></li>'
else:
prev = '<li><a href="/teachers?p=%s" style="font-size:15px;">下一页<a></li>'%(self.current_page+1)
page_list.append(prev)
end = '<li><a href="/teachers?p=%s" style="font-size:15px;">尾页<a></li>'%(self.num_pages)
page_list.append(end)
return ''.join(page_list)
