g
db/migrate/20141124032850_create_comments.rb
migration
config/routes.rb
app/controllers/comments_controller.rb
app/controllers/boards_controller.rb
関連定義
app/models/comment.rb
app/controllers/comments_controller.rb
app/views/boards/show.html.erb
includesメソッド
app/views/boards/show.html.erb
app/controllers/comments_controller.rb
app/views/boards/show.html.erb