[STORE] Added, that index_name is inferred from the including class

    class NoteRepository
      include Elasticsearch::Persistence::Repository
    end

    NoteRepository.index_name
    => "note_repository"

Author: karmi

elasticsearch-persistence/lib/elasticsearch/persistence/repository.rb

@@ -12,7 +12,7 @@ def respond_to?(method_name, include_private=false)
 
     module Repository
       def self.included(base)
-        gateway = Elasticsearch::Persistence::Repository::Class.new
+        gateway = Elasticsearch::Persistence::Repository::Class.new host: base
 
         base.class_eval do
           define_method :gateway do

elasticsearch-persistence/lib/elasticsearch/persistence/repository/class.rb

@@ -18,6 +18,10 @@ def initialize(options={}, &block)
           @options = options
           block.arity < 1 ? instance_eval(&block) : block.call(self) if block_given?
         end
+
+        def host
+          options[:host]
+        end
       end
 
     end

elasticsearch-persistence/lib/elasticsearch/persistence/repository/naming.rb

@@ -12,7 +12,13 @@ def klass=klass
         end
 
         def index_name name=nil
-          @index_name = name || @index_name || self.class.to_s.underscore.gsub(/\//, '-')
+          @index_name = name || @index_name || begin
+            if respond_to?(:host) && host && host.is_a?(Module)
+              self.host.to_s.underscore.gsub(/\//, '-')
+            else
+              self.class.to_s.underscore.gsub(/\//, '-')
+            end
+          end
         end; alias :index :index_name
 
         def index_name=(name)

elasticsearch-persistence/test/unit/repository_module_test.rb

@@ -108,5 +108,9 @@ def serialize(document)
       end
     end
 
+    should_eventually "configure the index name in the shortcut initializer" do
+      assert_equal 'repository', Elasticsearch::Persistence::Repository.new.index_name
+    end
+
   end
 end

elasticsearch-persistence/test/unit/repository_naming_test.rb

@@ -88,6 +88,12 @@ def self.class
         subject.index_name = 'foobar1'
         assert_equal 'foobar1', subject.index
       end
+
+      should "be inferred from the host class" do
+        class ::MySpecialRepository; end
+        subject.define_singleton_method(:host) { MySpecialRepository }
+        assert_equal 'my_special_repository', subject.index_name
+      end
     end
 
     context "document_type" do