ruby-on-rails - 回形针 - 从 Amazon S3 中删除文件？

Question

我需要能够从 S3 中删除用户存储的文件，例如个人资料照片。只需调用@user.logo.destroy似乎没有奏效-我得到[paperclip] Saving attachments.在日志中，文件就在 S3 存储桶中。

如何删除文件本身？

Answer 1

这是 Paperclip 中可用于删除附件的方法:

# Clears out the attachment. Has the same effect as previously assigning
# nil to the attachment. Does NOT save. If you wish to clear AND save,
# use #destroy.
def clear(*styles_to_clear)
  if styles_to_clear.any?
    queue_some_for_delete(*styles_to_clear)
  else
    queue_all_for_delete
    @queued_for_write  = {}
    @errors            = {}
  end
end

# Destroys the attachment. Has the same effect as previously assigning
# nil to the attachment *and saving*. This is permanent. If you wish to
# wipe out the existing attachment but not save, use #clear.
def destroy
  clear
  save
end

所以你看，如果没有发生错误，destroy 只会删除附件。我已经用我自己的设置对 S3 进行了尝试，所以我知道破坏是有效的。

您的问题可能是您有任何取消保存的验证吗？即 validates_attachment_presence 或类似的东西？

我认为找出答案的一种方法是尝试@user.logo.destroy，然后检查@user.errors 的内容，看看它是否报告了任何错误消息。