Question

我使用Paperclip Jcrop时出错，我按照rails cast进行操作。当我上传图像时它可以正常工作，但是当我尝试裁剪它时，我会在我的控制台中找到它：

[paperclip] An error was received while processing: #<Paperclip::PaperclipError: There was an error processing the thumbnail for paperclip-reprocess20110822-2281-19969sz>
[paperclip] An error was received while processing: #<Paperclip::PaperclipError: There was an error processing the thumbnail for paperclip-reprocess20110822-2281-19969sz>

有我的模特：

class User < ActiveRecord::Base
    has_attached_file :avatar, :styles  => { :small => ["100x100#", :jpg], :large => ["500x500>",:jpg] }, :processors => [:cropper] 
    attr_accessor :crop_x, :crop_y, :crop_w, :crop_h  
    after_update :reprocess_avatar, :if => :cropping?  

    def cropping?  
        !crop_x.blank? && !crop_y.blank? && !crop_w.blank? && !crop_h.blank?  
    end  

    def avatar_geometry(style = :original)  
        @geometry ||= {}  
        @geometry[style] ||= Paperclip::Geometry.from_file(avatar.path(style))  
    end  

private  
    def reprocess_avatar  
        avatar.reprocess!  
    end  
end

我的处理器：

module Paperclip  
    class Cropper < Thumbnail  
        def transformation_command  
            if crop_command  
                crop_command + super.first.sub(/ -crop \S+/, '')  
            else  
                super  
            end  
        end  

        def crop_command  
            target = @attachment.instance  
            if target.cropping?  
                " -crop #{target.crop_w}x#{target.crop_h}+#{target.crop_x}+#{target.crop_y}"  
            end  
        end  
    end  
end

有什么想法解决这个问题吗？（我在OS 10.7上）

Answer 1

在comments of the railscast

内查找解决方案

在模型中

#has_attached_file :avatar, :styles  => { :small => ["100x100#", :jpg], :large => ["500x500>",:jpg] }, :processors => [:cropper] 
has_attached_file :avatar, :styles  => { 
    :small => {:geometry => "100x100#", :processors => [:cropper]}, 
    :large => {:geometry => "500x500>"} 
}

在处理器中

#crop_command + super.sub(/ -crop \S+/, '')
crop_command + super.join(' ').sub(/ -crop \S+/, '').split(' ')

Paperclip错误处理缩略图

1 个答案: