Schwad/double_render_error.rb

## double_render_error.rb
def double_render_error
  @books = Book.all
  render 'index'
  render 'show'
end

#=> AbstractController::DoubleRenderError - Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action.
	def double_render_error
	@books = Book.all
	render 'index'
	render 'show'
	end

	#=> AbstractController::DoubleRenderError - Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action.