[MODEL] Added, that index settings can be loaded from any object that responds to :read

Related: elastic#346
Related: elastic#351

Author: David Padilla

elasticsearch-model/lib/elasticsearch/model/indexing.rb

@@ -153,7 +153,8 @@ def mapping(options={}, &block)
         #
         #     # => {:index=>{:number_of_shards=>1}}
         #
-        # You can specify a YAML file with settings
+        # You can read settings from any object that responds to :read
+        # as long as its return value can be parsed as either YAML or JSON.
         #
         # @example Define index settings from YAML file
         #
@@ -163,14 +164,28 @@ def mapping(options={}, &block)
         #     #   number_of_shards: 1
         #     #
         #
-        #     Article.settings "config/elasticsearch/articles.yml"
+        #     Article.settings File.open("config/elasticsearch/articles.yml")
+        #
+        #     Article.settings.to_hash
+        #
+        #     # => { "index" => { "number_of_shards" => 1 } }
+        #
+        #
+        # @example Define index settings from JSON file
+        #
+        #     # config/elasticsearch/articles.json:
+        #     #
+        #     # { "index": { "number_of_shards": 1 } }
+        #     #
+        #
+        #     Article.settings File.open("config/elasticsearch/articles.json")
         #
         #     Article.settings.to_hash
         #
         #     # => { "index" => { "number_of_shards" => 1 } }
         #
         def settings(settings={}, &block)
-          settings = YAML.load_file(settings) if settings.is_a?(String)
+          settings = YAML.load(settings.read) if settings.respond_to?(:read)
           @settings ||= Settings.new(settings)
 
           @settings.settings.update(settings) unless settings.empty?
@@ -183,6 +198,10 @@ def settings(settings={}, &block)
           end
         end
 
+        def load_settings_from_io(settings)
+          YAML.load(settings.read)
+        end
+
         # Creates an index with correct name, automatically passing
         # `settings` and `mappings` defined in the model
         #

elasticsearch-model/test/support/model.json

@@ -0,0 +1 @@
+{ "baz": "qux" }

elasticsearch-model/test/unit/indexing_test.rb

@@ -36,7 +36,14 @@ class NotFound < Exception; end
       end
 
       should "update and return the index settings from a yml file" do
-        DummyIndexingModel.settings "test/support/model.yml"
+        DummyIndexingModel.settings File.open("test/support/model.yml")
+        DummyIndexingModel.settings bar: 'bam'
+
+        assert_equal( {foo: 'boo', bar: 'bam', 'baz' => 'qux'}, DummyIndexingModel.settings.to_hash)
+      end
+
+      should "update and return the index settings from a json file" do
+        DummyIndexingModel.settings File.open("test/support/model.json")
         DummyIndexingModel.settings bar: 'bam'
 
         assert_equal( {foo: 'boo', bar: 'bam', 'baz' => 'qux'}, DummyIndexingModel.settings.to_hash)