views:
from django.shortcuts import render,redirect
from django.shortcuts import HttpResponse
# Create your views here.
from django.views import View
class Home(View):
def dispatch(self, request, *args, **kwargs):
print('before')
result = super(Home,self).dispatch(request,*args,**kwargs)
print('after')
return result
def get(self,request):
print('in get')
return render(request,'home.html')
def post(self,request):
print('in post')
return render(request,'home.html')
user_dict = {
'k1':{'name':'hrg','email':'hrg@163.com','pwd':'123'},
'k2':{'name':'eric','email':'hrg@163.com','pwd':'111'},
'k3':{'name':'hhh','email':'hrg@163.com','pwd':'222'},
'k4':{'name':'kkk','email':'hrg@163.com','pwd':'123'},
}
def detail(request,uid,nid):
v = "nid:"+nid+"uid:"+uid
return render(request,'detail.html',{'user_dict':user_dict,})
templates:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<ul>
{% for k in user_dict.keys %}
<li>{{ k }}</li>
{% endfor %}
</ul>
<ul>
{% for v in user_dict.values %}
<li>{{ v }}</li>
{% endfor %}
</ul>
<ul>
{% for k,v in user_dict.items %}
<li>{{ k }}:{{ v }}</li>
{% endfor %}
</ul>
</body>
</html>
在每一个for循环中，都有一forloop属性。
forloop.counter 当前循环的计数器顺排，用处大了，可以给循环打上序号
forloop.counter0 当前循环的计数器顺排，从0开始
forloop.revcounter forloop.revcounter0 跟上面一样是倒排
forloop.first forloop.last 是否是第一次循环或最后一次循环
{% for i in v1 %}
<tr><td>{{ forloop.counter }}</td></td></tr>
{% endfor %}
如果还有嵌套for，子for内还有 forloop.parentloop属性是一个包含上面6个属性的字典，其值如：
{'parentloop': {}, 'counter0': 0, 'counter': 1, 'revcounter': 3, 'revcounter0': 2, 'first': True, 'last': False}