是否可以在Django窗体中添加一行?

如果要添加动态字段,请覆盖init方法。

像这样:

class aForm(forms.Form):
  input1 = forms.CharField()
  input2 = forms.CharField()

  def __init__(self, addfields=0, *args, **kwargs):
    super(aForm, self).__init__(*args, **kwargs)

    #add new fields
    for i in range(3,addfields+3)
       self.fields['input%d' % i] = forms.CharField()

我会定义 input3 在表单定义中,不需要它,然后默认隐藏它。然后用户可以使用JavaScript显示输入。

也许是这样的:

from django import forms
from django.utils.datastructures import SortedDict
def some_view(request):
    data = {}

    # Using session to remember the row count for simplicity
    if not request.session.get('form_rows', None):
        request.session['form_rows'] = 3

    # If posted with add row button add one more row
    if request.method == 'POST' and request.POST.get('rows', None):
            request.session['form_rows'] += 1
            data = request.POST

    # Create appropriate number of form fields on the fly
    fields = SortedDict()
    for row in xrange(1, request.session['form_rows']):
        fields['value_{0}'.format(row)] = forms.IntegerField()

    # Create form class
    MyForm = type('MyForm', (forms.BaseForm,), { 'base_fields': fields })

    form = MyForm(initial=data)

    # When submitted...
    if request.method == 'POST' and not request.POST.get('rows', None):
        form = MyForm(request.POST)
        if form.is_valid():
            # do something
    return render_to_response('some_template.html', {
        'form':form,
    }, context_instance=RequestContext(request))

带模板:

<form action="" method="post">
    {{ form }}
    <input type="submit" />
    <input type="submit" value='Add' name='rows' />
</form>

您可以很容易地修改这个示例,这样您就可以使用AJAX发出请求,并用新表单替换旧表单。