导轨 - 回形针验证附件大小时，它不应该是什么？ [英] Rails - Paperclip validating attachment size when it shouldn't be?

问题描述

我有使用回形针，看起来像这样一个轨道模式：

  has_​​attached_file：图像：风格=＆GT; {：正常=＆GT; ['857x392＃'，：PNG]}，
                    ：URL =＆GT; /assets/pages/:id/:basename.:extension，
                    ：PATH =＆GT; ：RAILS_ROOT /公/资产/页/：ID /：基本名称：扩展名

  validates_attachment_size：图像：less_than =＆GT; 2.megabytes
 

在试图建立这种模式的记录没有附件上传，则返回验证错误：

  

有问题与下列   字段：

  *图片文件大小文件大小必须在0到2097152字节之间。
 

我已经试过路过两个：allow_blank =>真实：allow_nil =>在模型验证后声明真实的，但也没有工作。

我怎么能允许：图像参数设置为空白。

？

解决方案

  

validates_attachment_size：图像：在=> 0.megabytes..2.megabytes

现在的作品

I've got a rails model using Paperclip that looks like this:

  has_attached_file :image, :styles => { :normal => ['857x392#', :png] },
                    :url => '/assets/pages/:id/:basename.:extension',
                    :path => ':rails_root/public/assets/pages/:id/:basename.:extension'

  validates_attachment_size :image, :less_than => 2.megabytes

When attempting to create a record of this model without an attachment to upload, the validation error is returned:

There were problems with the following fields:

* Image file size file size must be between 0 and 2097152 bytes.

I've tried passing both :allow_blank => true and :allow_nil => true after the validation statement in the model, but neither have worked.

How can I allow the :image parameter to be blank?

解决方案

validates_attachment_size :image, :in => 0.megabytes..2.megabytes

works now

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