[STORE] Added a Rails ORM generator for Elasticsearch::Persistence::Model

Usage:

    $  bundle exec rails generate scaffold Person name:String email:String --orm=elasticsearch --force

Author: karmi

Diff for: elasticsearch-persistence/README.md

@@ -600,6 +600,12 @@ article.published.iso8601
 # => "2014-01-01"
 ```
 
+The library provides a Rails ORM generator:
+
+```bash
+rails generate scaffold Person name:String email:String birthday:Date --orm=elasticsearch
+```
+
 ## License
 
 This software is licensed under the Apache 2 license, quoted below.

Diff for: elasticsearch-persistence/lib/rails/generators/elasticsearch/model/model_generator.rb

@@ -0,0 +1,21 @@
+require "rails/generators/elasticsearch_generator"
+
+module Elasticsearch
+  module Generators
+    class ModelGenerator < ::Rails::Generators::NamedBase
+      source_root File.expand_path('../templates', __FILE__)
+
+      desc "Creates an Elasticsearch::Persistence model"
+      argument :attributes, type: :array, default: [], banner: "attribute:type attribute:type"
+
+      check_class_collision
+
+      def create_model_file
+        @padding = attributes.map { |a| a.name.size }.max
+        template "model.rb.tt", File.join("app/models", class_path, "#{file_name}.rb")
+      end
+
+      hook_for :test_framework
+    end
+  end
+end

Diff for: elasticsearch-persistence/lib/rails/generators/elasticsearch/model/templates/model.rb.tt

@@ -0,0 +1,9 @@
+<% module_namespacing do -%>
+class <%= class_name %>
+  include Elasticsearch::Persistence::Model
+
+<% attributes.each do |attribute| -%>
+  <%= "attribute :#{attribute.name},".ljust(@padding+12) %> <%= attribute.type %>
+<% end -%>
+end
+<% end -%>

Diff for: elasticsearch-persistence/lib/rails/generators/elasticsearch_generator.rb

@@ -0,0 +1,2 @@
+require "rails/generators/named_base"
+require "rails/generators/active_model"