c = RequestContext(request, {
'foo': 'bar',
})
get_template('about.html').render(c)
当我们定义一个RequestContext对象的时候,它的构造函数 __init__
会调用 get_standard_processors(), 返回一个collect
collect.extend(_builtin_context_processors)
collect.extend(settings.TEMPLATE_CONTEXT_PROCESSORS)
这个就和TEMPLATE_CONTEXT_PROCESSORS 联系在一起, 得到settings里面的设置.
这个过程只执行一次,当下次再执行的时候,由于
global _standard_context_processors 变量非none.
另外观察RequestContext的__init__
def __init__(self, request, dict_=None, processors=None, current_app=None,
use_l10n=None, use_tz=None):
有一个processors参数,我们可以在构造对象的时候,给它n个临时的processor
=================Example================================
Info.xml
<!DOCTYPE html>
<html>
<head>
About firstDJ
</head>
<body>
Thanks for watching me, my address is <b>{{myaddress}}</b>, my request is <b>{{myrequest}}</b>...
</body>
</html>
py
def custome_proc(request):
return {'myaddress': request.META['REMOTE_ADDR']}
def hello(request, *args, **kwargs):
c = RequestContext(request, {
'myrequest': 'milk',
},
processors = [custome_proc])
t = get_template('info.html')
return HttpResponse(t.render(c))
结果
