存在 Django 和测试本地 URL

发布于 2024-09-13 12:09:11 字数 1291 浏览 6 评论 0原文

我有一个模型需要存储将成为 Django 环境一部分的 URL。如果我存储普通 URL，我会使用 models .URLField，并使用 verify_exists 确保 URL 确实存在。

然而，这在开发中效果并不好，因为开发服务器是单线程的，它会无限期地挂起，因为它无法同时处理两个请求。

我希望使用 resolve()，但我很难将该文档页面末尾的函数 myview 调整为不接受请求的版本，因为我想检查给定的本地 URL 是否可以被解决，并在没有引发 404 的情况下从空白会话中调用。

我希望使用 validator 来完成此操作，如下所示：

def validate_local_url(value):
    try:
        view, args, kwargs = resolve(value)
        view(*args, **kwargs)
    except Resolver404:
        raise ValidationError(u'%s is not a local URL (not a valid URL)' % value)
    except Http404:
        raise ValidationError(u'%s is not a local URL (does not exist)' % value)

但是，如果没有将有效的 request 对象传递到 kwargs 中，则会失败。如何生成虚拟（空白）请求对象？我尝试过仅使用 django.http.HttpRequest 。

原文

I have a model which needs to store URLs which will be part of the Django environment. If I was storing normal URLs, I'd use models.URLField, and use verify_exists to make sure the URL actually exists.

However, this doesn't work that great in development, since the dev server is single-threaded, it hangs indefinitely, since it can't process two requests at once.

I was hoping to do something using resolve(), but am having difficulty adapting the function myview at the end of that documentation page to a version which does not take a request, since I want to check that a given local URL can be resolved, and called without a 404 being raised, from a blank session.

I was hoping to do this with a validator, something like this:

def validate_local_url(value):
    try:
        view, args, kwargs = resolve(value)
        view(*args, **kwargs)
    except Resolver404:
        raise ValidationError(u'%s is not a local URL (not a valid URL)' % value)
    except Http404:
        raise ValidationError(u'%s is not a local URL (does not exist)' % value)

However, this fails without a valid request object being passed into kwargs. How do I generate a dummy (blank) request object? I've tried just using django.http.HttpRequest.

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行雁书 2024-09-20 12:09:11

只是一个疯狂的想法，不确定是否有帮助。您是否考虑过命名网址并使用 reverse()< /代码>？如果 URL 有效，Reverse 就会起作用；如果 URL 无效，Reverse 就会失败。

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大海や 2024-09-20 12:09:11

您是否喜欢使用 django 测试客户端?

如果是这样，这应该可以做到：

from django.test.client import Client

def validate_local_url(path):
    c = Client()
    try:
        resp = c.get(path)
        if resp.status_code == 404:
            raise ValidationError(u'%s is not a local URL (does not exist)' % value)
    except:
        raise ValidationError(u'%s is not a local URL (not a valid URL)' % value)

只是，你知道，确保在死刑下 validate_local_url 不能被本地 GET 调用。请求，否则有人可以轻松地将您的服务器设置为无限循环：

# urls.py
url('^infinite_loop/
然后：
 http://example.com com/infinite_loop/?path_field=infinite_loop
, 'myapp.infinite_loop', 'infinite_loop')

#views.py
def infinite_loop_view(request, template_name="blah.html", form_class=MyForm):
    my_form = form_class(request.REQUEST or None) # yes, admittedly this is dumb
    if my_form.is_valid():
        return HttpResponse("Congratulations! Your path was totally valid.")
    return render_to_response(template_name, locals(), RequestContext(request))

然后：

http://example.com com/infinite_loop/?path_field=infinite_loop

Are you cool with using the django test Client?

If so, this should do it:

from django.test.client import Client

def validate_local_url(path):
    c = Client()
    try:
        resp = c.get(path)
        if resp.status_code == 404:
            raise ValidationError(u'%s is not a local URL (does not exist)' % value)
    except:
        raise ValidationError(u'%s is not a local URL (not a valid URL)' % value)

Just, you know, make sure under penalty of death that validate_local_url can never be called by a local GET request, otherwise someone can trivially set your server on an infinite loop:

# urls.py
url('^infinite_loop/
And then:
http://example.com/infinite_loop/?path_field=infinite_loop
, 'myapp.infinite_loop', 'infinite_loop')

#views.py
def infinite_loop_view(request, template_name="blah.html", form_class=MyForm):
    my_form = form_class(request.REQUEST or None) # yes, admittedly this is dumb
    if my_form.is_valid():
        return HttpResponse("Congratulations! Your path was totally valid.")
    return render_to_response(template_name, locals(), RequestContext(request))

And then:

http://example.com/infinite_loop/?path_field=infinite_loop

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