我有一个Django视图，它导出一个Excel文件，并在文件准备好时提示下载对话框。我安装了Celery和RabbitMQ，使这个任务成为后台任务。这意味着Excel文件将不会被提示下载，但我想将其保存在机器中的某个地方，以便用户稍后可以转到某个页面并下载它。
示例：
转到列表页面-〉点击导出-〉获取消息：“您的文件将很快准备好”-〉用户进入“下载”页面-〉在列表中查找文件-〉点击下载。
所以我现在要做的就是创建一个新模型：

class Export(models.Model):
    dossier = models.ForeignKey(
        Dossier,
        related_name="Export",
        on_delete=models.CASCADE,
        default=None,
        editable=False,
    )
    timestamp = models.DateTimeField(auto_now_add=True, editable=False)
    file = models.FileField(
        upload_to=get_rapport_filename, verbose_name="Fichiers Excel"
    )

    def __str__(self):
        return "%s - %s" % (self.dossier, self.timestamp)

    class Meta:
        verbose_name = "Excel Report"
        verbose_name_plural = "Excel Reports"

这是我用来生成Excel文件的代码：

@shared_task
def export_dossiers_factures(request):
    dossier_queryset = Dossier.objects.filter(status_admin="Facturé")
    today = str(date.today())
    response = HttpResponse(
        content_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    )
    response["Content-Disposition"] = (
        "attachment; filename=" + today + "-dossiers_factures.xlsx"
    )
    workbook = Workbook()

    # Get active worksheet/tab
    worksheet = workbook.active
    worksheet.title = "Dossiers facturés"

    # Define the titles for columns
    columns = [
        "Numéro",
        "Créé le",
        "Assurance",
        "Prestataire",
        "Matricule",
        "N° de BL",
        "N° de Facture",
        "Date de mise à jour",
    ]

    row_num = 1

    # Assign the titles for each cell of the header
    for col_num, column_title in enumerate(columns, 1):
        cell = worksheet.cell(row=row_num, column=col_num)
        cell.value = column_title

    # Iterate through all movies
    for dossier in dossier_queryset:
        row_num += 1

        # Define the data for each cell in the row
        row = [
            dossier.numero,
            str(dossier.date_posted)[:10],
            dossier.assurance.name,
            dossier.created_by.user.username,
            dossier.matricule,
            dossier.bl,
            dossier.invoice,
            str(dossier.date_updated)[:10],
        ]

        # Assign the data for each cell of the row
        for col_num, cell_value in enumerate(row, 1):
            cell = worksheet.cell(row=row_num, column=col_num)
            cell.value = cell_value

    workbook.save(response)

    return response

我想把return response替换成一个东西，它把文件保存在某个地方，并创建一个指向该文件的对象。