django形式的其他字段 [英] Additional field in django form

问题描述

我正在Django中创建一个表单。当我发布数据时，数据自然发送。我的问题是，我想向POST数据传递一个附加属性，该属性不是任何表单字段，而是一个附加属性。

I am creating a form in Django. When I POST the data, the data is naturally sent. My problem is, I want to pass an additional property to the POST data, that is not any of the form fields, but an additional one.

以便以后可以使用做类似（伪代码）的事情：

So that I can later do something like (pseudocode):

def form_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            extra_field = form.cleaned_data['extra_field']
            #or maybe
            extra_field = form.extra_field
            #...
    else:
        form = MyForm()
        #...

为了将额外的属性（不是字段而是简单的变量）传递给POST请求而可能起作用的任何事情。

Anything that might work in order to pass an extra property, which is not a field but a simple variable, to the POST request.

推荐答案

如果您希望将任何内容作为HTML的POST请求传递给django，则可以使用隐藏的输入

If you want to pass anything to django as a POST request from the HTML, you would use a hidden input

<input type="hidden" name="foo" value="bar" />

print request.POST['foo'] # out: bar

如果要从视图中修改python中的POST字典，请 copy（）使其可变。

If you want to modify the POST dictionary in python from your view, copy() it to make it mutable.

mutable_post = request.POST.copy()
mutable_post['foo'] = 'bar'

form = MyForm(mutable_post)

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