出現private method `write_uploader' called for

用carrierwave做我的upload plugin 用的時候很正常，有一天突然噴出了錯誤訊息

NoMethodError in Admin::ArticlesController#update

private method `write_uploader' called for #<Article:0x007f8f6cd1c3d0>

解了老半天也上網google了一下，也到Github上找issue，都沒辦法！

最後才發現

class Article < ActiveRecord::Base default_scope order('post_date DESC') #scope :public, where( :post_status => 'public' ) scope :public_article, where( :post_status => 'public' ) mount_uploader :article_image, ArticleImageUploader end

我有一個scope叫做public，經過小小的了解發現雖然不是不是保留字，不過是拿來當修飾詞的，雖然不是每一個method都會用到，不過拿來用可能會有問題！

所以只要把scope :public改成其他的字就行了

出現private Method `write_uploader' Called For

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