admin.py 文件源码

def serialize_form(self, form):
        """
        Given this job's bound form return the form's data as a session serializable object
        The field order is preserved from the original form
        """
        data = []
        for field_name, field in form.fields.items():
            if field_name in form.cleaned_data:
                form_value = form.cleaned_data[field_name]
                display_value = None
                if isinstance(form_value, models.Model):
                    ctype = ContentType.objects.get_for_model(form_value)
                    form_value = '{0}{1}.{2}:{3}'.format(
                        _CONTENT_TYPE_PREFIX,
                        ctype.app_label,
                        ctype.model,
                        form_value.pk
                    )
                elif isinstance(form_value, UploadedFile):
                    file_name = _fs.get_available_name(form_value.name)
                    file_path = _fs.path(file_name)
                    with open(file_path, 'wb+') as destination:
                        for chunk in form_value.chunks():
                            destination.write(chunk)
                    form_value = file_path
                    display_value = file_name
                data.append({
                    'name': field_name,
                    'label': force_text(field.label) if field.label else None,
                    'value': form_value,
                    'display_value': display_value,
                })
        return data