Ruby on rails Rails有一个关系和简单的形式

使用simple_form为带有以下字段的

WorkoutSet

模型构建嵌套表单：

• intro\u视频

• 准备好

• outro\u视频

• WorkoutStep

  （另一个嵌套模型）

我希望能够从选择列表中选择

intro\u视频

由于

WorkoutSet

位于

Workout

内，因此表单如下所示： WorkoutSet.rb

_workout\u set\u fields.html.haml

将呈现select，并且在我保存模型并列出以下参数之前，这些值看起来很好：

params.require(:workout).permit(:title, :pro, :image, warmup_attributes: [:id, :_destroy, {main_video_ids: []}], workout_sets_attributes: [:id, :_destroy, :title, :intro_video, workout_steps_attributes: [:id, :_destroy, {main_video_ids: []}] ])

另外，我注意到在

f.input:intro\u video

行中，发送的参数是

intro\u video

，而不是

intro\u video\u attributes

---

提前谢谢。

我不明白你在问什么。呜呜，我忘了问真正的问题。我希望能够从选择列表中选择

intro\u视频

  %h2 Sets
  .sets.some{ :style => "margin-left: 25px" }
    = f.simple_fields_for :workout_sets do |set|
      = render 'workout_set_fields', f: set
    .links
      .button-row
        = link_to_add_association 'add set', f, :workout_sets

.nested-fields
  %h2 New set - #{link_to_remove_association 'Delete', f}
  = f.label :title
  = f.text_field :title

  = f.input :intro_video, :collection => Video.all, :label_method => :title, :value_method => :id, :include_blank => false

  %br
  %br
  #sets.some{ :style => "margin-left: 25px" }
    = f.simple_fields_for :workout_steps do |step|
      = render 'workout_step_fields', f: step
    .links
      .button-row
        = link_to_add_association 'add step', f, :workout_steps

params.require(:workout).permit(:title, :pro, :image, warmup_attributes: [:id, :_destroy, {main_video_ids: []}], workout_sets_attributes: [:id, :_destroy, :title, :intro_video, workout_steps_attributes: [:id, :_destroy, {main_video_ids: []}] ])