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铁路纸张没有界定的方法`有效日期s_attachment?
原标题:Rails Paperclip undefined method `validates_attachment ?

我拿着我模式中的一些验证法的错误信息。 我的系统正在使用纸张,把许多档案附在帮助条款上,我知道,我安装了纸张,因为Im能够上载文件,而没有验证这些文件。

我的模式如下:

class HelpAttachment < ActiveRecord::Base

  belongs_to :help

  has_attached_file :attachment, 
                    :styles => { :medium => "300x300>",
                                 :thumb => "100x100>" }

  validates_attachment :attachment, :content_type => [  image/png ,  image/jpg ,  image/gif , "application/pdf", 
                                     video/mpeg ,  video/quicktime ,  video/x-ms-asf ,  video/x-msvideo , 
                                     video/x-flv  ]


end

这是我在尝试提交新的附文时所听到的错误信息:

NoMethodError in HelpsController#create

undefined method `validates_attachment  for #<Class:0x00000005581498>

如果我去掉所有工程的验证——目录线,仅仅没有文件证明。

我在我的格姆皮书上用纸lip,在发展模式中用I m。

任何想法?

最佳回答

http://github.com/thoughtbot/paperclip”rel=“nofollow” “新风格”验证器应当照样。 这适用于纸面文件3.0及以上。

validates :attachment, :attachment_content_type => { :content_type => [ image/png ,  image/jpg ]}
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