Question

我正在创建一个Web应用程序，使用jQuery动态添加表单并使用django后端处理它们。我根据https://docs.djangoproject.com/en/dev/topics/forms/formsets/上的文档在django中使用了formsets，并尝试按照http://stellarchariot.com/blog/2011/02/dynamically-add-form-to-formset-using-javascript-and-django/上的示例和Dynamically adding a form to a Django formset with Ajax处的stackoverflow进行操作。

我遇到的问题是，当我提交表单时，我没有获得任何POST数据。当我删除变量{{formset.management_form}}时，我将数据发送到POST但得到错误[u'ManagementForm数据丢失或已被篡改']。如果我将管理表单放在模板中（我应该），我就没有POST数据。有人知道解决方案吗？

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

models.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

views.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))

templates（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>

Answer 1

我不认为你说你使用的是django-crispy-forms，但是，我会在这里发布这个错误的任何人遇到这个错误，谁知道，也许它也会帮助你。

我最近在尝试使用多个脆内联表单集时遇到了类似的问题。我在使用{{ formset.management_form }}之前添加了{% cirspy formset.form formset.form.helper %}。

脸部掌

当我加入管理表格时，表格中没有任何数据可供发布。当我没有包括管理表格时，django抱怨[u'ManagementForm data is missing or has been tampered with']。

要解决这个问题，只需按照设计方式使用crispy-forms：{% crispy formset formset.form.helper %}。这样就不需要在自己的标签中包含管理表单了，这似乎让Django感到困惑。

使用formset / {{managment_form}}变量时，提交的Django Form没有POST数据

1 个答案: