[英]paperclip - styles lambda
我有一個腳本可以從中加載我的rails環境。 (
當我建立附件並保存其父對象時,附件樣式保存和創建的所有內容始終為[“ 100>”,“ jpg”]
我的劇本:
require './config/environment.rb'
house = House.find(1)
house.attachments.build(doc: File.new('myfile.pdf'), category_id: 2)
house.save
楷模
House < AR::Base
has_many :attachments, :as => :attachable
end
Attachment < AR::Base
### has_attached_file :doc, styles: lambda {|attachment| {thumb: (attachment.instance.category_id == 2 ? ["500>", 'jpg'] : ['100>', 'jpg']} )}
has_attached_file :doc, styles: lambda {|attachment| {thumb: (attachment.instance.category_id == 2 ? ["500>", 'jpg'] : ['100>', 'jpg'] )}} #category_id is always nil at this point but still still saves in the database
belongs_to :attachable, polymorphic: true
end
我猜我在這里忽略了一些愚蠢的事情,但任何指針我都會感激的:)
您在該lambda上的語法看起來有些時髦。 我不確定該三元運算符是否不會發出“意外的':'”。
試一下:
Attachment < AR::Base
has_attached_file :doc, styles: lambda {|attachment| { thumb: (attachment.instance.category_id == 2 ? ["500>", 'jpg'] : ['100>', 'jpg'])}}
belongs_to :attachable, polymorphic: true
end
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