shortcart

render和render_to_response之间的区别是是否传入request到模板中

def render_to_response(template_name, context=None, content_type=None, status=None, using=None):
    content = loader.render_to_string(template_name, context, using=using)
    return HttpResponse(content, content_type, status)


def render(request, template_name, context=None, content_type=None, status=None, using=None):
    content = loader.render_to_string(template_name, context, request, using=using)
    return HttpResponse(content, content_type, status)

更好用的是提供的通用类RedirectView

def redirect(to, *args, **kwargs):
    if kwargs.pop('permanent', False):
        redirect_class = HttpResponsePermanentRedirect
    else:
        redirect_class = HttpResponseRedirect

    return redirect_class(resolve_url(to, *args, **kwargs))

这个解析的使用场景是？

def resolve_url(to, *args, **kwargs):

    if hasattr(to, 'get_absolute_url'):
        return to.get_absolute_url()

    if isinstance(to, Promise):
        to = force_text(to)

    if isinstance(to, six.string_types):
        if to.startswith(('./', '../')):
            return to

    try:
        return reverse(to, args=args, kwargs=kwargs)
    except NoReverseMatch:
        if callable(to):
            raise
        if '/' not in to and '.' not in to:
            raise

    return to