如何在新动作中将嵌套属性与belongs_to关联一起使用? [英] How to use nested attributes with belongs_to association on new action?

问题描述

在update动作上，以下nested_form起作用，但是在create上，我收到此错误:

On the update action the following nested_form works, but on create I get this error:

Couldn't find Student with ID=12 for Cv with ID=

控制器:

def new
  @cv = Cv.new
  @cv.student = current_student
end

def create
  @cv = Cv.new(params[:cv])

  if @cv.save
    redirect_to student_dashboard_path,
      notice: t('activerecord.successful.messages.created', model: @cv.class.model_name.human)
  else
    render 'new'
  end
end

型号:

class Cv < ActiveRecord::Base
  attr_accessible :student_attributes

  belongs_to :student
  accepts_nested_attributes_for :student
end

视图:

= f.simple_fields_for :student do |s|
  = s.input :english_level, collection: [['Low', 1], ['High', 2]]

推荐答案

您也应该更改route.rb.

You should make changes to your route.rb too.

resources :parent do
  resources :child
end

看看Jose Valim的这个有用的实现-继承的资源.

Take a look at this useful implementation by Jose Valim - inherited-resources .

这篇关于如何在新动作中将嵌套属性与belongs_to关联一起使用?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！