[MODEL] Added a suggest method to wrap the suggestions in response

Instead of:

    @articles.response.response['suggest']

let's have:

    @articles.response.suggest

Closes elastic#483

Author: nipe0324

elasticsearch-model/lib/elasticsearch/model/response.rb

@@ -71,6 +71,12 @@ def shards
         def aggregations
           response['aggregations'] ? Hashie::Mash.new(response['aggregations']) : nil
         end
+
+        # Returns a Hashie::Mash of the suggest
+        #
+        def suggest
+          response['suggest'] ? Hashie::Mash.new(response['suggest']) : nil
+        end
       end
     end
   end

elasticsearch-model/test/integration/active_record_basic_test.rb

@@ -22,11 +22,19 @@ class ::Article < ActiveRecord::Base
 
             settings index: { number_of_shards: 1, number_of_replicas: 0 } do
               mapping do
-                indexes :title,      type: 'string', analyzer: 'snowball'
-                indexes :body,       type: 'string'
-                indexes :created_at, type: 'date'
+                indexes :title,         type: 'string', analyzer: 'snowball'
+                indexes :suggest_title, type: 'completion'
+                indexes :body,          type: 'string'
+                indexes :created_at,    type: 'date'
               end
             end
+
+            def as_indexed_json(options = {})
+              attributes
+                .symbolize_keys
+                .slice(:title, :body, :created_at)
+                .merge(suggest_title: title)
+            end
           end
 
           Article.delete_all
@@ -210,10 +218,14 @@ class ::Article < ActiveRecord::Base
 
         should "allow dot access to response" do
           response = Article.search query: { match: { title: { query: 'test' } } },
-                                    aggregations: { dates: { date_histogram: { field: 'created_at', interval: 'hour' } } }
+                                    aggregations: { dates: { date_histogram: { field: 'created_at', interval: 'hour' } } },
+                                    suggest: { title_suggest: { text: 'test', completion: { field: 'suggest_title' } } }
 
           response.response.respond_to?(:aggregations)
           assert_equal 2, response.response.aggregations.dates.buckets.first.doc_count
+
+          response.response.respond_to?(:suggest)
+          assert_equal 2, response.response.suggest.title_suggest.first.options.size
         end
       end
 

elasticsearch-model/test/unit/response_test.rb

@@ -8,7 +8,8 @@ def self.document_type; 'bar'; end
     end
 
     RESPONSE = { 'took' => '5', 'timed_out' => false, '_shards' => {'one' => 'OK'}, 'hits' => { 'hits' => [] },
-                 'aggregations' => {'foo' => {'bar' => 10}}}
+                 'aggregations' => {'foo' => {'bar' => 10}},
+                 'suggest' => {'my_suggest' => []}}
 
     setup do
       @search  = Elasticsearch::Model::Searching::SearchRequest.new OriginClass, '*'
@@ -73,5 +74,14 @@ def self.document_type; 'bar'; end
       assert_kind_of Hashie::Mash, response.aggregations.foo
       assert_equal 10, response.aggregations.foo.bar
     end
+
+    should "access the suggest" do
+      @search.expects(:execute!).returns(RESPONSE)
+
+      response = Elasticsearch::Model::Response::Response.new OriginClass, @search
+      assert_respond_to response, :suggest
+      assert_kind_of Hashie::Mash, response.suggest
+      assert_equal [], response.suggest.my_suggest
+    end
   end
 end