在rails3中的application_controller上使用number_with_precision

Question

我添加了require 'action_view'＆amp; include ActionView::Helpers::NumberHelper⬇

class ApplicationController < ActionController::Base

  require 'action_view'
  include ActionView::Helpers::NumberHelper

而且，当我在我的=＆gt;中调用它时def self.form_price formatted_price, total, total_till

puts number_with_precision(total, :precision => 2, :delimiter => ',')

收到此消息：

.rvm/gems/ruby-1.9.3-p327/gems/railties-3.2.13/lib/rails/commands/runner.rb:53:in `eval': undefined method `number_with_precision' for ApplicationController:Class (NoMethodError)

Answer 1

ActionController::Base.helpers.number_with_precision(total, :precision => 2, :delimiter => ',')

Answer 2

尝试使用以下内容：

view_context.number_with_precision(total, :precision => 2, :delimiter => ',')

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