Django model form saving simultaneously post request twice

问题

I am using django-bootstrap-modal-forms 1.3.1 following https://pypi.org/project/django-bootstrap-modal-forms/ but if I run it's project of books it calls the post request to create book twice but saves the from once.

As I am using it, it makes twice post request but both the request are saved one with empty file i.e one post saves all the fields of modal like title description, date but not the upload (file) and the next post saves all of it with upload simultaneously

This is my model :

class File(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    visible_to_home = models.ManyToManyField(Home, blank=True)  # when none visible to all home
    visible_to_company = models.ManyToManyField(Company, blank=True)  # when none visible to all company
# To determine visibility, check if vtc is none or include company of user and if true, check same for home
    created_date = models.DateTimeField(auto_now=True)
    published = models.BooleanField(default=True)
    upload = models.FileField(blank=True, null=True, upload_to=update_filename)
    title = models.CharField(max_length=225, blank=True, null=True)
    description = models.TextField(blank=True, null=True)

If I remove author then it works fine but as my requirement I need author.

class FileForm(PopRequestMixin, CreateUpdateAjaxMixin, forms.ModelForm):
    class Meta:
        model = File
        fields = ('title', 'description', 'upload')

View

class FileCreateView(PassRequestMixin, SuccessMessageMixin,
                 CreateView):
    template_name = 'file/upload-file.html'
    form_class = FileForm
    success_message = 'File was uploaded successfully'
    success_url = reverse_lazy('home')

    def post(self, *args, **kwargs):
        """
        Handle POST requests: instantiate a form instance with the passed
        POST variables and then check if it's valid.
        """
        form = self.get_form()
        # form = self.form_class(self.request.POST, self.request.FILES)
        if self.request.method == 'POST':
            if form.is_valid():
                file = form.save(commit=False)
                file.upload = form.cleaned_data['upload']
                file.author = User.objects.get(pk=self.request.user.pk)
                file.save()
                return self.form_valid(form)
            else:
                return self.form_invalid(form)

home.html

{% block extrascripts %}
<script type="text/javascript">
$(function () {
  $(".upload-file").modalForm({formURL: "{% url 'file-upload' %}"});
 });
</script>
{% endblock extrascripts %}

Other is same as the example implementation.

回答1:

You need to modify your CreateView

class FileCreateView(PassRequestMixin, SuccessMessageMixin,
                 CreateView):
    template_name = 'file/upload-file.html'
    form_class = FileForm
    success_message = 'File was uploaded successfully'
    success_url = reverse_lazy('home')

    def form_valid(self, form):
       file = form.save(commit=False)
       file.author = self.request.user.pk
       file.save()
       return HttpResponseRedirect(reverse('home'))

来源：https://stackoverflow.com/questions/54041660/django-model-form-saving-simultaneously-post-request-twice

标签

django

django-models

django-forms