FileField未在表单POST上处理

尝试使用FileField上载文件时，表单不会将文件数据发布到服务器 . 如果您使用文本字段，它可以很好地工作，但由于某种原因，它无法识别该文件，因为它没有显示在request.FILES或request.POSTS上 .

MEDIA_ROOT和MEDIA_URL配置：

MEDIA_ROOT = '/home/grove/pootleImages/'
MEDIA_URL = '/pootleImages/'

decorators.py中的get_unit_context装饰器：

def get_unit_context(permission_codes):

def wrap_f(f):

    @wraps(f)
    def decorated_f(request, uid, *args, **kwargs):
        unit = get_object_or_404(
                Unit.objects.select_related("store__translation_project",
                                            "store__parent"),
                id=uid,
        )
        _common_context(request, unit.store.translation_project,
                        permission_codes)
        request.unit = unit
        request.store = unit.store
        request.directory = unit.store.parent

        return f(request, unit, *args, **kwargs)

    return decorated_f

return wrap_f

我的forms.py方法：

def unit_image_form_factory(language):

    image_attrs = {
        'lang': language.code,
        'dir': language.direction,
        'class': 'images expanding focusthis',
        'rows': 2,
        'tabindex': 15,
    }


    class UnitImageForm(forms.ModelForm):

        class Meta:
            fields = ('image',)
            model = Unit

        # It works if using a CharField!
        #image = forms.CharField(required=True,
          #                                   label=_("Image"),
           #                                  widget=forms.Textarea(
            #                                 attrs=image_attrs))
        image= forms.FileField(required=True, label=_('Image'),
                                             widget=forms.FileInput(
                                             attrs=image_attrs))
        def __init__(self, *args, **kwargs):
            self.request = kwargs.pop('request', None)
            super(UnitImageForm, self).__init__(*args, **kwargs)


        def save(self):
            super(UnitImageForm, self).save()


    return UnitImageForm

我的models.py片段：

class Unit(models.Model, base.TranslationUnit):
    # ...
    # ...
    # It works if using a TextField!
    #image = models.TextField(null=True, blank=True)
    image = models.FileField(upload_to=".", blank=True, null=True)
    # ...
    # ...

我的urls.py片段：

url(r'^xhr/units/(?P<uid>[0-9]+)/image/?$',
    'image',
    name='pootle-xhr-units-image'),

我的views.py方法：

@require_POST
@ajax_required
@get_unit_context('translate')
def image(request, unit):
    """Stores a new image for the given ``unit``.

    :return: If the form validates, the cleaned image is returned.
             An error message is returned otherwise.
    """
    # Update current unit instance's attributes
    unit.uploaded_by = request.profile
    unit.uploaded_on = timezone.now()

    language = request.translation_project.language
    form = unit_image_form_factory(language)(request.POST, request.FILES, instance=unit,
                                               request=request)

    if form.is_valid():
        form.save()
        context = {
            'unit': unit,
            'language': language,
        }
        t = loader.get_template('unit/image.html')
        c = RequestContext(request, context)

        json = {'image': t.render(c)}
        rcode = 200
    else:
        json = {'msg': _("Image submission failed.")}
        rcode = 400

    response = simplejson.dumps(json)

    return HttpResponse(response, status=rcode, mimetype="application/json")

我的图片上传HTML模板：

<div id="upload-image">
    <form enctype="multipart/form-data" method="post" action="{% url 'pootle-xhr-units-image' unit.id %}" id="image-form">
    {% csrf_token %}
    <input type="file" name="image" id="id_image" />
    <p><input type="submit" value="{% trans 'Upload' %}" /></p>
    </form>
</div>

在实例化表单时，request.POST不返回用户浏览的文件，也不返回request.FILES . form.errors只返回 "This field is required" 表单对象返回以下内容：

<tr><th><label for="id_image">Image:</label></th><td><ul class="errorlist"><li>This field is required.</li>
</ul><input lang="pl" rows="2" name="image" id="id_image" type="file" class="images expanding focusthis" dir="ltr" tabindex="15" /></td></tr>

当用户单击提交按钮时，会发生以下POST错误：

"POST /xhr/units/74923/image HTTP/1.1" 400 35

我可以通过在图像属性中包含required = False来绕过它，但无论如何都不会发布文件 .

更多输出调试信息：

需要fileField时的POST = True：

状态代码：400 BAD REQUEST表格数据：csrfmiddlewaretoken：yoTqPAAjy74GH

form.errors：

“msg”：“

• 图片

• 此字段是必填字段 .
  “}

如果需要更改= True到required = False：

状态代码：200 OK表单数据：csrfmiddlewaretoken：yoTqPAAjy74GH

但是图像场仍然没有出现在表格数据中 .

谢谢，

亚历克斯

我添加了一个gist hub，其中包含与此问题相关的所有文件，以简化可视化：

https://gist.github.com/alex-silva/40313734b9f1cd37f204