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我正在创建一个 Web 应用程序以使用 jQuery 动态添加表单并使用 django 后端处理它们。我已经按照https://docs.djangoproject.com/en/dev/topics/forms/formsets/上的文档在 django 中使用了表单集，并尝试按照http://stellarchariot.com/blog/2011上的示例进行操作/02/dynamically-add-form-to-formset-using-javascript-and-django/并在 stackoverflow 中使用 Ajax 将表单动态添加到 Django 表单集。

我遇到的问题是，当我提交表单时，我没有得到任何 POST 数据。当我删除变量 {{ formset.management_form}} 时，我将数据发送到 POST 但收到错误 [u'ManagementForm 数据丢失或已被篡改']。如果我将管理表单放入模板中（我应该这样做），我不会得到任何 POST 数据。有谁知道这个的解决方案？

forms.py
from django import forms
from busker.models import *
from django.forms import ModelForm



class UploadFileForm(ModelForm):
   class Meta:
      model = UploadFile

class Category(models.Model):
    category = models.CharField(max_length = 50)


    def __unicode__(self):
        return self.name

模型.py

from django.db import models

class UploadFile(models.Model):
    title = models.CharField(max_length = 50)
    file  = models.FileField(upload_to = 'test')

    def __unicode__(self):
        return self.name

class CategoryForm(ModelForm):
   class Meta:
      model = Category

视图.py

def submit(request,action=''):

    if request.user.is_authenticated():
        class RequiredFormSet(BaseFormSet):
            def __init__(self, *args, **kwargs):
                super(RequiredFormSet, self).__init__(*args, **kwargs)
                for form in self.forms:
                    form.empty_permitted = False
        UploadFileFormSet = formset_factory(UploadFileForm,extra=2, max_num=10, formset=RequiredFormSet)

        if request.method == 'POST':    
            uploadfile_formset = UploadFileFormSet(request.POST, request.FILES,prefix='songs')
            category_form= CategoryForm(request.POST,prefix = 'category')



            if uploadfile_formset.is_valid and category_form.is_valid:
                return HttpResponseRedirect('/') #going to the home root
            else:
                return HttpResponseRedirect('/contact') #testing to see if it fails
        else:
            uploadfile_formset = UploadFileFormSet(prefix = 'songs')
            category_form= CategoryForm(prefix = 'category') 

            t = loader.get_template('submit.html')
            c = RequestContext(request, {
                 'uploadfile_formset': uploadfile_formset,
                 'category_form': category_form,
                'head_title':  u'Submit Song',
                'page_title': 'Submit Song',
                })

            return HttpResponse(t.render(c))

模板 (submit.html)

<form id="songform" name="songform" enctype="multipart/form-data" action="" method="POST">{% csrf_token %}
     {{uploadfile_formset.management_form}}
     <div id="songforminputs">
    {{category_form.as_p}}
     {% for formset in uploadfile_formset %}
         <div id="dynamicInput">
         <p class = "songSubmitForm" > Song {{forloop.counter}} </p>   
         {% for field in formset %}
             <label class="submitForm" for="title">{{ field.label }}</label>
             {{field|add_class:"submitForm" }}
              </br>
         {% endfor %}
         </div>
       {% endfor %}

       </div>

   <input type="button" value="Add another text input" onClick="addInput('dynamicInput');">
   <input type="button" value="Remove a text input" onClick="removeInput('dynamicInput');">
   <input type="submit" name="submitbutton" id="submitbutton" value="" >

</form>

jQuery / javascript 部分

<script type="text/javascript">
var counter = 2;
var minimum = 2;
var limit = 5;

function addInput(divName){
     if (counter == limit)  {
          alert("You have reached the limit of adding " + counter + " inputs");
     }
     else {

          var newdiv = document.createElement('div');
          newdiv.id = "dynamicInput";
          newdiv.innerHTML = "<p class = 'songSubmitForm' > Song " + (counter+1) +"</p>"  + "<label for='title' class='submitForm' >Title</label>" + "<input id ='id_form-" + (counter)+ "-title'type='text' class='contact' name='form-" + counter +"-title'>" + "</br>" + "<label for='file' class='submitForm' >File</label>" + " <input id='id_form-"+counter+"-file' type='file' class='contact' name='form-"+counter+"-file'>" + "</br>" + "</br>";
          document.getElementById('songforminputs').appendChild(newdiv);
          counter++;
     }
}

function removeInput(divName){
     if (counter == minimum)  {
          alert("You need at least " + counter + " inputs");
     }
     else {
         $('div#dynamicInput:last-child').remove()
          counter--;
     }
}

</script>
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1 回答 1

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我不认为您说您使用的是 django-crispy-forms，但是，我会在此处为遇到此错误的任何人发布此信息，谁知道，也许它也会对您有所帮助。

我最近在尝试使用多个脆的内联表单集时遇到了一个非常相似的问题。我{{ formset.management_form }}在使用之前添加了{% cirspy formset.form formset.form.helper %}.

掌心

当我包含管理表格时，表格中的任何数据都不会在邮寄时可用。当我不包括管理表格时，django 抱怨[u'ManagementForm data is missing or has been tampered with'].

要解决这个问题，只需按照它的设计方式使用脆皮形式：{% crispy formset formset.form.helper %}. 这样就不需要在它自己的标签中包含管理表单，这似乎让 Django 感到困惑。

于 2016-01-27T20:55:17.690 回答