from django.http import StreamingHttpResponse
def downloads(request, file_id):
    # 得到即將下載文件的路徑和名稱
    path, file_name = word_ok(file_id)
    print(path)  # 即將下載文件的路徑
    print(file_name)  #即將下載文件的名稱
    response = StreamingHttpResponse(readFile(path))
    response['Content-Type'] = 'application/octet-stream'
    response['Content-Disposition'] = 'attachment;filename="download.docx"'
    return response


# 緩沖流下載文件方法
def readFile(filename, chunk_size=512):
    with open(filename, 'rb') as f:
        while True:
            c = f.read(chunk_size)
            if c:
                yield c
            else:
                break


# 生成文件，并返回文件的路徑和名稱
def word_ok(file_id):
    file = models.file_information.objects.get(pk = file_id)
    print("word名稱：", file.file_name)
    # 寫入創(chuàng)建 word文件
    document = docx.Document()
    yiwen = models.yiwen.objects.filter(file = file)
    for y in yiwen:
        print(y.yiwen)
        print(y.yiwen_style)
        if len(y.yiwen_style) > 0:
            document.add_paragraph(y.yiwen, style=y.yiwen_style)
        else:
            document.add_paragraph(y.yiwen)
    path = "E:\\Man-Machine Translation System\\second_Edition\\static\\work\\yiwen_doc\\" + file.file_name
    document.save(path)
    # 返回文件的路徑和名稱
    return path, file.file_name