Django3 多个文件提交到数据库

Question

我实际上有一个想法，可以制作一个可以同时上传大量文件的应用程序，但是我在如何在模型上实现它方面遇到了一些困难，现在我需要帮助。

我目前正在尝试解决这个错误。

我收到这些错误：

Internal Server Error: /upload
Traceback (most recent call last):
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/records/views.py", line 123, in send_files
    form.save()
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/forms/models.py", line 460, in save
    raise ValueError(
ValueError: The GoCustomerRegistration could not be created because the data didn't validate.
[25/Aug/2021 13:02:31] "POST /upload HTTP/1.1" 500 70627
Internal Server Error: /upload
Traceback (most recent call last):
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/records/views.py", line 123, in send_files
    form.save()
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/forms/models.py", line 460, in save
    raise ValueError(
ValueError: The GoCustomerRegistration could not be created because the data didn't validate.
[25/Aug/2021 13:06:28] "POST /upload HTTP/1.1" 500 70627
Internal Server Error: /upload
Traceback (most recent call last):
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/records/views.py", line 123, in send_files
    form.save()
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/forms/models.py", line 460, in save
    raise ValueError(
ValueError: The GoCustomerRegistration could not be created because the data didn't validate.
[25/Aug/2021 13:06:30] "POST /upload HTTP/1.1" 500 70627
[25/Aug/2021 13:06:34] "GET /upload HTTP/1.1" 200 1906
Internal Server Error: /upload
Traceback (most recent call last):
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/records/views.py", line 123, in send_files
    form.save()
  File "/home/yokwejuste/PycharmProjects/DjangoProjects/Internship/go_immigration/venv/lib/python3.9/site-packages/django/forms/models.py", line 460, in save
    raise ValueError(
ValueError: The GoCustomerRegistration could not be created because the data didn't validate.
[25/Aug/2021 13:06:58] "POST /upload HTTP/1.1" 500 70641

Models.py:

class GoCustomerRegistration(models.Model):
    name = models.CharField(max_length=300, verbose_name='Full name')
    type = models.CharField(max_length=20, verbose_name='Customer Type')
    destination = models.CharField(max_length=30, null=False, verbose_name='Destination')
    time_of_submission = models.DateTimeField(auto_now_add=True, null=False)
    registered_by = models.ForeignKey(GoUser, on_delete=models.CASCADE)
    age = models.IntegerField(verbose_name="Age", null=False)
    photo = models.ImageField(max_length=10000, verbose_name='Customer Picture',
                          default='profile1.png', upload_to='customers/profiles/')
    documents = models.FileField(max_length=1000, verbose_name='Documents',
                             null=False, default=None,
                             upload_to=f'customers/files/%Y/%m/%d')

    class Meta:
        ordering = ["time_of_submission"]
    def __str__(self):
        return '%s --- %s' % (self.name, self.documents)

Views.py:

def send_files(request):
    context = {}
    if request.POST:
        form = GoCustomerRegistrationForm(request.POST)
        if form.is_valid:
            form.save()
            return redirect('preview')
        else:
            HttpResponse(f'Invalid data { request.user.username }')
        context['document_form'] = form

    else:
        form = GoCustomerRegistrationForm
        context['document_form'] = form

    return render(request, 'files.html', context)

urls.py:

path('upload', send_files, name='upload'),

forms.py:

class GoCustomerRegistrationForm(forms.ModelForm):
    class Meta:
        model = GoCustomerRegistration
        fields = ('name', 'type', 'destination', 'age', 'photo', 'documents')
        TYPE_CHOICES = (
            ('', 'Select a customer type'),
            ('student', 'STUDENT'),
            ('worker', 'WORKER'),
            ('tourist', 'TOURIST'),)
        widgets = {
            'name': forms.TextInput(attrs={'class': 'form-control form-control-user'}),
            'age': forms.TextInput(attrs={'class': 'form-control form-control-user'}),
            'type': forms.Select(choices=TYPE_CHOICES, attrs={'class': 'form-control form-control-user'}),
            'destination': forms.TextInput(attrs={'class': 'form-control form-control-user'}),
            'photo': forms.ClearableFileInput(
            attrs={'multiple': True, 'class': 'btn btn-primary d - block btn - user w - 100'}),
            'documents': forms.ClearableFileInput(
            attrs={'multiple': True, 'class': 'btn btn-primary d - block btn - user w - 100'}),
        }

Answer 1

如果你想将多个文件分配给一个模型，你应该制作一个单独的模型并在它们之间进行FK。例如照片：

class GoCustomerRegistration(models.Model):
    ...


class CustomerPhoto(models.Model):
    photo = models.ImageField(upload_to='customers/profiles/')

现在每位顾客可以拥有多张照片

现在要在模板中上传多张图片，您可以使用InlineFormSet。 https://docs.djangoproject.com/en/3.2/topics/forms/modelforms/#inline-formsets

中的文档

Django3 多个文件提交到数据库

Django3 multiple files submit to database

django

django-3.2