Formtastic嵌套幫助

我想讓自己熟悉以下情況。Formtastic嵌套幫助

routine.rb

class Routine < ActiveRecord::Base 
    has_many :exercise_routines 
    has_many :exercises, :through => :exercise_routines 
    accepts_nested_attributes_for :exercise_routines 
end

exercise_routine.rb

class ExerciseRoutine < ActiveRecord::Base 
    belongs_to :exercise 
    belongs_to :routine 
    has_many :attempts 
    accepts_nested_attributes_for :attempts 
end

show.html＃/程序/ show.html.haml

%h2 Exercises: 

%ol 
    - for exercise_routine in @routine.exercise_routines 
    %li= exercise_routine.exercise.name 
    %ul 
     %li 
     = exercise_routine.sets 
     Sets 
     %li 
     = exercise_routine.reps 
     Reps 
     %li 
     Attempt: 
     - for attempt in exercise_routine.attempts 
      = attempt.reps 
     = semantic_form_for @routine do |routine| 
      = routine.semantic_fields_for exercise_routine do |exercise_routine| 
      = exercise_routine.semantic_fields_for :attempts do |attempt| 
       = attempt.input :reps, :required => false 
      = routine.buttons`

我遇到的麻煩是什麼是兩件事： 1）這是成功地爲每個例程渲染嘗試，如果我手動添加thro唉控制檯，但如果我嘗試更新它，我會得到：「未知屬性：exercise_routine」我意識到，由於PARAMS：

{"utf8"=>"✓", 
"_method"=>"put", 
"authenticity_token"=>"51fZRe1wKRQoVUz+lGlldd4DmMODGHN203Htc4DEi0Y=", 
"routine"=>{"exercise_routine"=>{"attempts_attributes"=>{"0"=>{"reps"=>"5", 
"id"=>"1"}, 
"1"=>{"reps"=>"1555", 
"id"=>"2"}, 
"2"=>{"reps"=>""}}}}, 
"commit"=>"Update Routine", 
"id"=>"3"}`

看起來不正確。它應該用一個id引用exercise_routines。

2）希望能夠同時添加嘗試。

@routine.exercise_routines.each do |er| 
    1.times {er.attempts.build} 
end

正確渲染它，但當然我遇到了相同的參數問題。我要麼做一些愚蠢的錯誤，要麼這比我認爲要做這種多集合嵌套更難？

來源

2011-06-30 Daniel Fischer

您沒有正確使用fields_for。第一個參數必須用於嵌套字段的關聯。第二個可以是用於關聯值的/單個模型的集合。

= routine.semantic_fields_for :exercise_routines, exercise_routine do |f|

此外，我建議不使用表單生成器塊內部本地躲在第一局部exercise_routine。我將使用@routine.exercise_routines.each do |exercise_routine|表格而不是for循環。

來源

2011-07-01 01:05:10 Samuel

Formtastic嵌套幫助

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