強烈的參數沒有將屬性與白名單simple_form

Question

我有一些問題了解如何築巢3個模型。我想，在關係的最深點，（從下拉不是創建一個新的視頻，但選擇一個現有的）添加Video到WorkoutSteps

型號：

Workout WorkoutSet WorkoutStep - >剛Video Video

關係的陣列 鍛鍊： has_and_belongs_to_many :workout_sets, :join_table => :workout_sessions, dependent: :destroy

WorkoutSet has_and_belongs_to_many :workout_steps, :join_table => :sets_steps, dependent: :destroy

WorkoutStep has_and_belongs_to_many :workout_sets, :join_table => :sets_steps

而在意見如下：

_form.html.haml

= simple_form_for(@workout, url: admin_workouts_path(@workout)) do |f| 
    = f.input :title 
    %h3 Sets 
    .sets.some{ :style => "margin-left: 25px" } 
    = f.simple_fields_for :workout_sets do |set| 
     = render 'workout_set_fields', f: set 
    .links 
     = link_to_add_association 'add set', f, :workout_sets 
    = f.submit 

_workout_set_fields

個

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

_workout_step_fields

= f.association :main_videos, include_hidden: false 

workouts_controller.rb

def workout_params 
    params.require(:workout).permit(:title, :pro, :workout_step_id, workout_sets_attributes: [ :id, :_destroy, :title, workout_steps_attributes: [ main_video_ids: [:id] ] ]) 
end 

檢查PARAMS：

Answer 1

僅供參考，問題已解決，正如我在上述註釋中所述。

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

更多信息，check this link

Answer 2

main_video_ids是一個數組屬性，而不是散列s。因此，您可以直接將其列入白名單：

def workout_params 
    params.require(:workout).permit(:title, :pro, :workout_step_id, workout_sets_attributes: [ :id, :_destroy, :title, workout_steps_attributes: main_video_ids: [] ] ]) 
end