Question

所以我正在做lynda.com铁道课程。

由于为rails 3.1录制了课程，我现在正在使用Rails 4，现在他们正在强制执行strong_parameters。我添加了subject_params定义以符合这一点，但是当我尝试在我之前声明的类节目中获取params [：id]时，我得到了ActiveRecord :: RecordNotFound。吼叫是代码。方法显示之前工作正常。

class SubjectsController < ApplicationController


 def show
@subject = Subject.find(params[:id])
  end

  def new
    @subject = Subject.new(:name => 'default')
  end

  def create
    # Instantiante a new object using form parameters
   @subject = Subject.new(subject_params)
   # Save the object
     if @subject.save
    # If save suceeds, redirect to the list action
  redirect_to(:action => 'list')
else
  # If save fails, redisplay the form so user can fix problems
  render('new')
  end
end

private
def subject_params
    params.require(:subject).permit(:id, :name, :position, :visible)
  end

end

Answer 1

尝试添加:created_at和:updated_at并删除:id 像这样：

(params.require(:subject).permit(:name, :position, :visible, :created_at, :updated_at)

关于ruby的lynda课程 - rails 4不兼容

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