Django，从POST获取值

Question

I have in my template:

This is passed by {{form}}

    <form action="" method="POST">
        Inicio: <input type="text" id="start">
        <input type="submit" value="Sned" >
     {% csrf_token %}
    </form>

Then in the views.py

def test(request):

    if request.method != 'POST':
        context = {'form': 'by GET'}
        return render(request, 'test.html', context)
    else:

        if 'start' in request.POST:
            start = request.POST['start']
        else:
            start = False


    context = {'form': start}
    return render(request, 'test.html', context)

It seems that always return False

If I dont check the existance of the key I have this error:

MultiValueDictKeyError 

And the erropage says : "'start'" (single plus double quotes)

Answer 1

id is intended for javascript and css purposes. For variables that are important on server side, you should use name tag.

<input type="text" id="start" name="start">

Answer 2

You need to add a name attribute in your input, so when you are getting the POST data it will be found.

<form action="" method="POST">
    Inicio: <input type="text" id="start" name="start">
    <input type="submit" value="Sned" >
    {% csrf_token %}
</form>

Also I recommend you to do the following change in your view:

Replace

request.POST['start']

by:

request.POST.get('start')

So, if the field is not found, it will be reassigned whith a None value.

Answer 3

添加名称

<input type="text" name="start" id="start">