相关疑难解决方法(0)

我想从旧网站导入一些图标.这些图标的大小小于10kb.因此,当我尝试将图标导入其返回的stringio.txt文件时.

require "open-uri"
class Category < ActiveRecord::Base
   has_attached_file :icon,  :path => ":rails_root/public/:attachment/:id/:style/:basename.:extension"
  def icon_from_url(url)
    self.icon = open(url)
   end    
end

在rake任务中.

   category = Category.new
   category.icon_from_url "https://xyz.com/images/dog.png"
   category.save