Multiple file input field

fields.py

class MultipleFileInputWidget(forms.FileInput):
    input_type = 'file'
    def render(self, name, value, attrs=None):
        attrs = attrs if attrs else {}
        attrs['multiple'] = 'multiple'
        return super(MultipleFileInputWidget, self).render(name, value, attrs=attrs)

    def value_from_datadict(self, data, files, name):
        return files.getlist(name, None)

class MultipleImageInputField(forms.ImageField):
    widget = MultipleFileInputWidget
    def to_python(self, data):
        # Call Image Field validation for each file
        return list(super(MultipleImageInputField, self).to_python(img) for img in data)