未初始化的常量 ActionView::CompiledTemplates::Category [英] uninitialized constant ActionView::CompiledTemplates::Category

问题描述

使用本教程

http://railscasts.com/episodes/57-create-模型到文本字段

需要让它在我的应用程序中运行，在 Rails 3.0.7 上运行良好，将其更新到 3.1.3，我现在收到此错误

need to make it work in my app, was on rails 3.0.7 and it worked fine, updated it to 3.1.3 and I got this error now

uninitialized constant ActionView::CompiledTemplates::Category

我会花更多时间寻找答案，但现在我真的没时间了.我已经查看了与此问题相关的大部分谷歌结果，但没有任何好处.需要帮助.

I would look for answers more time but now I am really short on time. I have looked into most part of google results related to this problem and no good. Need help please.

表格

<%= f.collection_select :category_id, Category.find(:all), :id, :name, :prompt => "Select a Category" %>
or create one:
<%= f.text_field :new_category_name %>

模型

class Tvstation < ActiveRecord::Base
  belongs_to :category
  attr_accessor :new_category_name
  before_save :create_category_from_name

  def create_category_from_name
    create_category(:name => new_category_name) unless new_category_name.blank?
  end
end

推荐答案

好的，对于其他人来说，如果他们会像我一样陷入这种愚蠢的事情，请不要忘记在 app/models 中包含 category.rb..

ok, just for others if they will get into this stupid things as I did, don't forget to have the category.rb in the app/models..

class Category < ActiveRecord::Base
  ...
end

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