[MODEL] Fixed the completion example for ActiveRecord for Elasticsearch 5

Author: karmi

elasticsearch-model/examples/activerecord_mapping_completion.rb

@@ -18,17 +18,15 @@ class Article < ActiveRecord::Base
   include Elasticsearch::Model::Callbacks
 
   mapping do
-    indexes :title
-    indexes :title_suggest, type: 'completion', payloads: true
+    indexes :title, type: 'text'
+    indexes :title_suggest, type: 'completion'
+    indexes :url, type: 'keyword'
   end
 
   def as_indexed_json(options={})
     as_json.merge \
-    title_suggest: {
-      input:  title,
-      output: title,
-      payload: { url: "/articles/#{id}" }
-    }
+    title_suggest: { input:  title },
+    url: "/articles/#{id}"
   end
 end
 
@@ -63,7 +61,7 @@ def as_indexed_json(options={})
   };
 
 puts "Article suggest:".ansi(:bold),
-     response_2['articles'].first['options'].map { |d| "#{d['text']} -> #{d['payload']['url']}" }.
+     response_2['articles'].first['options'].map { |d| "#{d['text']} -> #{d['_source']['url']}" }.
      inspect.ansi(:bold, :green)
 
 require 'pry'; binding.pry;