NameError: global name 'Name' is not defined?

Hello, please help solve the following problem.

Have the form create a new record with a field for the file upload. By default, Django uses for this field widget ClearableFileInput. I decided to customize the widget, all is displayed normally when the form opens, but when trying to save (submit) great app! What did I miss?
class Document(models.Model):
 src = models.FileField(max_length=255, upload_to='documents/', blank=True, null=True, validators=[validate_file_extension])
class DocumentCreateForm(forms.ModelForm):
 class Meta:
 model = Document
 fields = ('src',)
 widgets = {
 'src': CustomClearableFileInput,

 def __init__(self, *args, **kwargs):
 super(DocumentCreateForm, self).__init__(*args, **kwargs)
 self.fields['src'].widget.attrs = {
 'accept':'.pdf, .zip .rar .doc .docx, .rtf',
 'id': 'src',
from django.forms.widgets import FileInput
from django.utils.translation import gettext_lazy as _

__all__ = (
 'FileInput', 'CheckboxInput'

class CustomClearableFileInput(FileInput):
 clear_checkbox_label = "
 input_text = "
 initial_text = _('Current file')
 template_name = 'documents/custom_clearable_file_input.html'

 def clear_checkbox_name(self, name):
 Given the name of the file input, return the name of the clear checkbox input.
 return name + '-clear'

 def clear_checkbox_id(self, name):
 Given the name of the clear checkbox input, return the HTML id for it.
 return name + '_id'

 def is_initial(self, value):
 Return whether value is considered to be initial value.
 return bool(value and getattr(value, 'url', False))

 def format_value(self, value):
 Return the file object if it has a url attribute defined.
 if self.is_initial(value):
 return value

 def get_context(self, name, value, attrs):
 context = super(CustomClearableFileInput, self).get_context(name, value, attrs)
 checkbox_name = self.clear_checkbox_name(name)
 checkbox_id = self.clear_checkbox_id(checkbox_name)
 'checkbox_name': checkbox_name,
 'checkbox_id': checkbox_id,
 'is_initial': self.is_initial(value),
 'input_text': self.input_text,
 'initial_text': self.initial_text,
 'clear_checkbox_label': self.clear_checkbox_label,
 return context

 def value_from_datadict(self, data, files, name):
 upload = super(CustomClearableFileInput, self).value_from_datadict(data, files, name)
 if not self.is_required and CheckboxInput().value_from_datadict(
 data, files, self.clear_checkbox_name(name)):

 if upload:
 # If the user contradicts themselves (uploads a new file AND checks the "clear" checkbox).
 # We return a unique marker object that FileField will turn into a ValidationError.
 # False signals to clear any existing value, as opposed to just None
 return False
 return upload

 def use_required_attribute(self, initial):
 return super(CustomClearableFileInput, self).use_required_attribute(initial) and not initial

 def value_omitted_from_data(self, data, files, name):
 return (
 super(CustomClearableFileInput, self).value_omitted_from_data(data, files, name) and
 self.clear_checkbox_name(name) not in data

{% load i18n %}
{% if widget.is_initial %}
 <div class="alert alert-info" role="alert" id="current-file-info">
 <i class="fa fa-file-text-o"></i> <span>{{ widget.initial_text }}:</span>
 <a href="{{ widget.value.url }}">{{ widget.value }}</a>
 {% if not widget.required %}
 <input type="checkbox" name="{{ widget.checkbox_name }}" id="{{ widget.checkbox_id }}">
 <label for="{{ widget.checkbox_id }}">{{ widget.clear_checkbox_label }}</label>
 {% endif %}
{% endif %}
<div class="input-group" id="file-field-document">
 <input type="text" disabled="disabled" class="form-control" id="file-field-file-name">
 <span class="input-group-btn">
 <div class="btn btn-default" id="file-field-clear-btn" style="display: none;">
 <i class="fa fa-times"></i>
 <span>{% trans 'Clear' %}</span>
 <div class="btn btn-default" id="file-field-input">
 <i class="fa fa-file-text-o"></i>
 <span id="file-field-input-title">{% trans 'Upload file' %}</span>
 <input type="{{ widget.type }}" name="{{ }}" {% include "django forms widgets attrs.html" %}>
class DocumentCreate(CreateView):
 template_name = 'documents/create_document.html'
 form_class = DocumentCreateForm

 def get(self, request, *args, **kwargs):
 data = dict()
 context = {
 'document_create_form': DocumentCreateForm(),
 data['html_form'] = render_to_string('documents/create_document.html', context, request=request)
 return JsonResponse(data)

 def form_valid(self, form):
 data = dict()
 data['form_is_valid'] = True
 context = {
 'documents': Document.objects.all()
 data['html_documents'] = render_to_string('documents/documents.html', context, request=self.request)
 return JsonResponse(data)

Traceback (most recent call last):
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/core/handlers/", line 41, in inner
 response = get_response(request)
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/core/handlers/", line 187, in _get_response
 response = self.process_exception_by_middleware(e, request)
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/core/handlers/", line 185, in _get_response
 response = wrapped_callback(request, *callback_args, **callback_kwargs)
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/views/generic/", line 68, in view
 return self.dispatch(request, *args, **kwargs)
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/views/generic/", line 88, in dispatch
 return handler(request, *args, **kwargs)
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/views/generic/", line 217, in post
 return super(BaseCreateView, self).post(request, *args, **kwargs)
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/views/generic/", line 182, in post
 if form.is_valid():
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/forms/", line 183, in is_valid
 return self.is_bound and not self.errors
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/forms/", line 175, in errors
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/forms/", line 384, in full_clean
 File "/Users/nurzhan_nogerbek/Virtualenvs/py2714/lib/python2.7/site-packages/django/forms/", line 396, in _clean_fields
 value = field.widget.value_from_datadict(, self.files self.add_prefix(name))
 File "/Applications/Projects/web/my_project/documents/", line 60, in value_from_datadict
 if not self.is_required and CheckboxInput().value_from_datadict(
NameError: global name 'CheckboxInput' is not defined
June 8th 19 at 17:06
1 answer
June 8th 19 at 17:08
well, you clearly indicated that you missed the import CheckboxInput
Hello, tried to import before you ask a question. Now double-checked, was not quite the correct path specified at the import. Silly of me. Thank you! - lenora_Nader91 commented on June 8th 19 at 17:11

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