ruby-on-rails - 如何从ElasticSearch模型索引中获取image.url

Question

有人知道如何从用Elasticsearcg索引的图像(使用轮胎)中获得image.url吗？

class Photo < ActiveRecord::Base
   include Tire::Model::Search
   include Tire::Model::Callbacks
   attr_accessible :caption, :user_id, :image, :venue_id
   attr_accessible :id, :image_file_name, :created_at, :updated_at, :city, :state, :country, :image_url
   has_attached_file :image, :styles => { :large => "9999x9999", :medium => "300x200>", :thumb => "100x100>" }, :default_url => "/images/:style/missing.png"
end

class SearchController < ApplicationController
   def index
   city_name = params[:city]
   @photos = Photo.search city_name
      respond_to do |format|
      format.html # index.html.erb
   end
end

结束

在我的index.html.erb中，当我这样做时:

<% @photos.each do |photo| %>
    <%= image_tag photo.image.url(:medium) %>

我收到nil:NilClass的未定义方法“url”

有谁能够帮助我 ？

非常感谢你

Answer 1

添加到您的照片模型:

mapping do
  indexes :image
end

def image
  picture.url(:medium)
end

在您看来

<%= image_tag photo.image %>