ruby-on-rails - Rails 嵌套属性 3 级深度

Question

我有模型 series seasons 和 episodes。我想从 series/new 表单中创建一个系列、一季和一集。我正在阅读 Rails Routing和 Nested Forms指南，但我不知道我做错了什么，因为指南没有涵盖 3 级深度。使用嵌套表单时，Rails 只会插入 Series 和 Season 值但不会插入 Episode 值。

我的方法是否正确？我会很感激任何输入~

# series.rb
has_many :seasons, dependent: :destroy
has_many :episodes, :through => :seasons
accepts_nested_attributes_for :seasons
accepts_nested_attributes_for :episodes

# season.rb
belongs_to :series
has_many :episodes, dependent: :destroy

# episode.rb
belongs_to :season

# routes.rb
resources :series, except: [:show, :new] do
  resources:seasons, except: [:show], path: '' do
    resources :episodes, path: ''
  end
end

系列/new.html.erb

<%= form_for @series do |f| %>
    <%= f.text_field :title %>
    <%= f.fields_for :seasons do |seasons_form| %>
      <%= seasons_form.text_field :title %>
      <%= seasons_form.fields_for :episodes do |episodes_form| %>
        <%= episodes_form.text_field :title %>
      <% end %>
    <% end %>
  <% end %>

Answer 1

替换

# series.rb
has_many :seasons, dependent: :destroy
accepts_nested_attributes_for :seasons
accepts_nested_attributes_for :episodes

与

# series.rb
has_many :seasons, dependent: :destroy
has_many :episodes, :through => :seasons
accepts_nested_attributes_for :seasons
accepts_nested_attributes_for :episodes