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当我尝试将数据从表单发送到视图时，除 FileField Data 之外的所有数据都已成功发送。我正在使用模板的 CURD 数据表屏幕截图也粘贴在下面。我也在使用ajax。我是 Django 的初学者，请帮助我找不到错误。

截屏

sjx

视图.py

def list(request):
    certificatedata = certificateDb.objects.all()
    context = {
    'certificatedata': certificatedata
    }
    return render(request, 'list.html',context)

def save_all(request,form,template_name):
    data = dict()
    if request.method == 'POST':
        if form.is_valid():
            form.save()
            data['form_is_valid'] = True

            certificatedata = certificateDb.objects.all()
            data['list'] = render_to_string('list_2.html',{'certificatedata':certificatedata})
        else:
            data['form_is_valid'] = False
    context = {
    'form':form
    }
    data['html_form'] = render_to_string(template_name,context,request=request)
    return JsonResponse(data)

def certificate_create(request):
    if request.method == 'POST':
        form = CertificateForm(request.POST, request.FILES )
        print('request.FILES',request.FILES)
    else:
        form = CertificateForm()
    return save_all(request,form,'certificate_create.html')

表格.py

from django import forms
from SharedApps_Application.models import serviceDb
from django.contrib.admin.widgets import AdminDateWidget
from django.forms.fields import DateField

class CertificateForm(forms.ModelForm):
    startdate = forms.DateField(widget = forms.SelectDateWidget(years=range(1995, 2100)))
    expiredate = forms.DateField(widget = forms.SelectDateWidget(years=range(1995, 2100)))
    class Meta:
        model = certificateDb
        fields = ('application', 'startdate', 'expiredate', 'environment_type','file' )

网址.py

from django.urls import path
from . import views
from django.conf import settings
from django.conf.urls.static import static
from django.conf.urls import url

urlpatterns=[
url(r'^list/$', views.list, name='list'),
    url(r'^list/create$', views.certificate_create, name='certificate_create'),
    url(r'^list/(?P<id>\d+)/update$', views.certificate_update, name='certificate_update'),
    url(r'^list/(?P<id>\d+)/delete$', views.certificate_delete, name='certificate_delete'),
]
if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

Create_certifcate.html

{% load crispy_forms_tags %}
<form method="post" enctype="multipart/form-data" data-url="{% url 'certificate_create' %}" class="create-form" >
    {% csrf_token %}
        <div class="modal-header">
        <h5 class="modal-title" >Create certificate</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
        <span aria-hidden="true">&times;</span>
        </button>
        </div>
        <div class="modal-body">
        {{form|crispy}}
        </div>
        <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        <button type="submit" class="btn btn-primary">Add Certificate</button>
        </div>
</form>

证书.js

$(document).ready(function(){
    var ShowForm = function(){
        var btn = $(this);
        $.ajax({
            url: btn.attr("data-url"),
            type: 'get',
            dataType:'json',
            beforeSend: function(){
                $('#modal-certificate').modal('show');
            },
            success: function(data){
                $('#modal-certificate .modal-content').html(data.html_form);
            }
        });
    };
    var SaveForm =  function(){
        var form = $(this);
        $.ajax({
            url: form.attr('data-url'),
            data: form.serialize(),
            type: form.attr('method'),
            dataType: 'json',
            success: function(data){
                if(data.form_is_valid){
                    $('#Certificate-table tbody').html(data.list);
                    $('#modal-certificate').modal('hide');
                    jQuery("body").load(window.location.href);
                } else {
                    $('#modal-certificate .modal-content').html(data.html_form)
                    jQuery("body").load(window.location.href);
                }
            }
        })
        return false;
    }
// create 
$(".show-form").click(ShowForm);
$("#modal-certificate").on("submit",".create-form",SaveForm);

//update
$('#Certificate-table').on("click",".show-form-update",ShowForm);
$('#modal-certificate').on("submit",".update-form",SaveForm)

//delete
$('#Certificate-table').on("click",".show-form-delete",ShowForm);
$("#modal-certificate").on("submit",".delete-form",SaveForm);

});
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