Rails 4在我的listings.rb文件中获取错误

Question

使用回形针创业板，当有人上传image.It时，我想验证生产部件在开发中工作，而不是在生产模式下工作。

class Listing < ActiveRecord::Base
  if Rails.env.development?

    has_attached_file :image, :styles => { :medium => "200x", :thumb => "100x100>" }, :default_url => "default.jpg"
    validates_attachment_content_type :image, :content_type => %w(image/jpeg image/jpg image/png)

  else

    has_attached_file :image, :styles => { :medium => "200x", :thumb => "100x100>" }, :default_url => "default.jpg"
    validates_attachment_content_type :image, :content_type => %w(image/jpeg image/jpg image/png)

        :storage => :dropbox,
        :dropbox_credentials => Rails.root.join("config/dropbox.yml")
        :path => ":style/:id_:filename"

    end
end

获取误差

/etsydemo2014 2014/app/model/listing.rb:12:语法错误，意外的=>，期待的keyword_end :存储=> :dropbox，^ keyword_end语法错误，意外'，'，期待keyword_end

Answer 1

您在验证结束时缺少逗号。因此，实际上您没有添加任何剩下的约束。将其改为：

has_attached_file :image, :styles => { :medium => "200x", :thumb => "100x100>" }, :default_url => "default.jpg"
validates_attachment_content_type :image, :content_type => %w(image/jpeg image/jpg image/png), :storage => :dropbox,
    :dropbox_credentials => Rails.root.join("config/dropbox.yml"),
    :path => ":style/:id_:filename"

注意content_type键末尾的逗号，它前面是storage。