def validate_plupload(request, pub_name, file_name, labelsContent):
    file_name = os.path.basename(file_name).strip().replace(" ", "_")

    if pub_name == "BED":
        # validate bed file name is unique
        if models.Content.objects.filter(file__endswith="/" + file_name).count() > 0:
            raise Exception(
                validation.invalid_entity_field_unique_value(
                    labelsContent.verbose_name,
                    labelsContent.pickfile.verbose_name,
                    file_name,
                )
            )

        # validate file name
        if not validation.is_valid_chars(file_name):
            raise Exception(validation.invalid_chars_error("BED file name"))

    return file_name