Question

我正在尝试使用Django验证一个简单的表单，它似乎总是返回false。我通过AJAX将表单的值发送到views.py，并在Javascript和view.py中打印值，以确保它正确传递。

观点文件：

def change_alphabet(request):

cipher = CaesarCipher()
x = cipher.getListLetter()
y = cipher.getListLetter()
if request.is_ajax() and request.method == "GET":
    print("Inside CHANGE")
    formKey = caesarKey(request.GET or None)

    print("Valid or not: %r " % formKey.is_valid())
    integerKey = int(request.GET.get('the_key'))
    print(integerKey)


    if formKey.is_valid():
        print(request.GET.get('the_key'))
        integerKey = int(request.GET.get('the_key'))

        y = cipher.setCipherLetters(integerKey)

        context = { 'x': x,
                    'y': y,
                    'formKey': formKey,

        }

        return render(request, "content/alteredAlphabet.html", context)
    else:
        print(formKey.errors)
        context = { 'x': x,
                    'y': y,
                    'formKey': formKey,

        }

        return render(request, "content/alteredAlphabet.html", context)

表格：

class caesarKey(forms.Form):
key = forms.DecimalField(max_value = 26, min_value = 1, initial = 1, required = True, error_messages={'required' : 'Please input a valid key number!'}, widget=forms.NumberInput(attrs={'class' : 'form-control', 'placeholder' : 'Key'}))

Javascript：

  $("#keyButtonId").on({
click: function() {
  var variable = document.getElementById('id_key');
  console.log(variable.value)
  $.ajax({
    url: "/alteredAlphabet",
    type: "GET",
    data: {
      CSRF: 'csrf_token',
      the_key: $('#id_key').val()
    },

    success: function(json) {
      //  $('#id_key').val('0');
      // console.log(json);
      $('#letterSection').fadeOut('slow', function() {
        $('#letterSection').html(json);
        $('#letterSection').fadeIn(3000);
      });


      //document.getElementById('letterSection').value = json;
      console.log("FUNCTION CALLED!");
    }
  });
}

}）;

打印的错误是：

<ul class="errorlist"><li>key<ul class="errorlist"><li>Please input a valid key number!</li></ul></li></ul>

更新：

用于呈现表单的模板代码：

<label for="id_key">
                Key:
              </label>
              <form onsubmit="return false;" method="GET" id="key-form">
                {% csrf_token %}
                <div class="col-sm-2 col-xs-5">
                  {{ formKey.key }}
                </div>
                <button name="action" id="keyButtonId" class="btn btn-primary" value="key">Key</button>
              </form>
              {% if formKey.errors %}
                          <div class="alert alert-danger" role="alert">
                              <strong>{{ formKey.key.errors }}</strong>
                          </div>
              {% endif %}

为什么它总是返回假？我错过了额外的数据绑定阶段吗？

Answer 1

您在Ajax中将关键数据作为the_key传递，但表单只需要key。

Django is_valid（）返回false

1 个答案: