标签：temp ota head 条件 gen param else count ext
django从ciew向template传递HTML字符串的时候，django默认不渲染此HTML，为了防止这串字符串里有恶意攻击的代码，所以要使用mark_safe函数
from django.utils.safestring import mark_safe
def view(request):
pagehtml = makr_safe(‘<a href=‘#‘>首页</a>‘)
return render(request,‘home.html‘, ‘pagehtml‘: pagehtml)
亦或者直接在前端页面中使用safe过滤器
{% pagehtml|safe %}
page_num = request.GET.get(‘page‘) # str
try:
page_num = int(page_num)
except Exception:
# 非数字字符的情况
page_num = 1
customers_count = models.Customer.objects.all().count() # 记录总条数
# 每页多少条
per_page_num = 10
s, y = divmod(customers_count, per_page_num) # s：每页都显示10条的页数。y：不足10条一页显示
# 总页码数
if y:
page_num_count = s + 1
else:
page_num_count = s
if page_num <= 0:
page_num = 1
elif page_num >= page_num_count:
page_num = page_num_count
# 页面显示页码数
page_num_show = 5
half_show = page_num_show // 2
if page_num - half_show <= 0:
start_page_show = 1
end_page_num = page_num_show + 1
elif page_num+half_show >= page_num_count:
start_page_show = page_num_count - page_num_show + 1
end_page_num = page_num_count + 1
else:
start_page_show = page_num - half_show
end_page_num = page_num + half_show + 1
page_num_range = range(start_page_show, end_page_num)
customers_objs = models.Customer.objects.all()[(page_num-1)*per_page_num: page_num*per_page_num]
print(page_num_range)
return render(request, ‘saleshtml/customers.html‘, {‘customers_objs‘: customers_objs,
‘page_num_range‘: page_num_range})
import re
from django.utils.safestring import mark_safe
class MyPagenation():
def __init__(self, page_num, total_count, per_page_num, page_num_show, base_url, get_data=None):
"""
翻页
:param page_num: 当前页码
:param total_count: 总记录数
:param per_page_num: 每页记录条数
:param page_num_show: 显示页码数
:param base_url: 翻页路由
:param get_data: QueryDict对象
"""
self.page_num = page_num
self.per_page_num = per_page_num
self.base_url = base_url
self.get_data = get_data # 搜索条件
try:
self.page_num = int(self.page_num)
except Exception:
# 非数字字符的情况
self.page_num = 1
s, y = divmod(total_count, self.per_page_num) # s：每页都显示10条的页数。y：不足10条一页显示
# 总页码数
if y:
self.page_num_count = s + 1
else:
self.page_num_count = s
if self.page_num <= 0:
self.page_num = 1
elif self.page_num >= self.page_num_count:
self.page_num = self.page_num_count
# 页面显示页码数
half_show = page_num_show // 2
if self.page_num - half_show <= 0:
start_page_show = 1
end_page_num = page_num_show + 1
elif self.page_num + half_show >= self.page_num_count:
start_page_show = self.page_num_count - page_num_show + 1
end_page_num = self.page_num_count + 1
else:
start_page_show = self.page_num - half_show
end_page_num = self.page_num + half_show + 1
# 如果要显示的页码数小于设定显示的页码总数
if self.page_num_count < page_num_show:
start_page_show = 1
end_page_num = self.page_num_count + 1
self.start_page_show = start_page_show
self.end_page_num = end_page_num
def page_html(self):
page_num_range = range(self.start_page_show, self.end_page_num)
# 生成页面html字符串
page_html = ‘‘
# 翻页按钮首页
# first_html = ‘<nav aria-label="Page navigation"><ul class="pagination"><li><a href="{0}?page=1">首页</a></li>‘ # .format(self.base_url)
self.get_data[‘page‘] = 1
first_html = ‘<nav aria-label="Page navigation"><ul class="pagination"><li><a href="{0}?{1}">首页</a></li>‘ .format(self.base_url, self.get_data.urlencode())
page_html += first_html
# 上一页的翻页按钮
# page_pre_html = ‘<li><a href="{0}?page={1}" ‘ # ‘aria-label="Previous"><span aria-hidden="true">«</span></a></li>‘. # format(self.base_url, 1 if self.page_num <= 1 else self.page_num - 1)
self.get_data[‘page‘] = 1 if self.page_num <= 1 else self.page_num - 1
page_pre_html = ‘<li><a href="{0}?{1}" ‘ ‘aria-label="Previous"><span aria-hidden="true">«</span></a></li>‘. format(self.base_url, self.get_data.urlencode())
page_html += page_pre_html
# 中间页码按钮
for foo in page_num_range:
# if foo == self.page_num:
# page_html += ‘<li class="active"><a href="{0}?{1}&page={2}">{3}</a></li>‘ # .format(self.base_url, re.sub(‘page=\d+‘,‘‘, self.get_data) if ‘page=‘ in self.get_data else self.get_data, foo, foo)
# else:
# page_html += ‘<li><a href="{0}?{1}&page={2}">{3}</a></li>‘ # .format(self.base_url,re.sub(‘page=\d+‘, ‘‘, self.get_data) if ‘page=‘ in self.get_data else self.get_data, foo, foo)
if foo == self.page_num:
self.get_data[‘page‘] = foo
page_html += ‘<li class="active"><a href="{0}?{1}">{2}</a></li>‘ .format(self.base_url, self.get_data.urlencode(), foo, foo)
else:
self.get_data[‘page‘] = foo
page_html += ‘<li><a href="{0}?{1}">{2}</a></li>‘ .format(self.base_url, self.get_data.urlencode(), foo)
# 下一页
# page_next_html = ‘<li><a href="{1}?page={0}" aria-label="Next">‘ # ‘<span aria-hidden="true">»</span></a></li>‘. # format(self.page_num_count if self.page_num >= self.page_num_count else self.page_num + 1, self.base_url)
self.get_data[‘page‘] = self.page_num_count if self.page_num >= self.page_num_count else self.page_num + 1
page_next_html = ‘<li><a href="{0}?{1}" aria-label="Next">‘ ‘<span aria-hidden="true">»</span></a></li>‘. format(self.base_url, self.get_data.urlencode())
page_html += page_next_html
# 尾页
# last_html = ‘<li><a href="{0}?page={1}">尾页</a></li>‘.format(self.base_url, self.page_num_count)
self.get_data[‘page‘] = self.page_num_count
last_html = ‘<li><a href="{0}?{1}">尾页</a></li>‘.format(self.base_url, self.get_data.urlencode())
page_html += last_html
return mark_safe(page_html)
@property
def start_page_data(self):
return (self.page_num-1) * self.per_page_num
@property
def end_page_data(self):
return self.page_num * self.per_page_num
。。。
标签：temp ota head 条件 gen param else count ext
原文地址：https://www.cnblogs.com/journeyer-xsh/p/13908575.html
