Question

我有两个相关的模型

锻炼：

has_many :exercises, dependent: :destroy
accepts_nested_attributes_for :exercises, 
                              :reject_if => :all_blank,
                              :allow_destroy => true

锻炼：

belongs_to :workout

锻炼控制器有以下参数：

params.require(:workout).permit(:name, exercises_attributes: [:id,:name,:reps,:sets,:weight])

这是我的seed.rb文件

5.times do |i|
  Workout.create(name: i, exercises_attributes: [ 
                                              name: 'Bench Press',
                                              reps: 5, 
                                              sets: 5, 
                                              weight: 200.0],
                      exercises_attributes: [ 
                                              name: 'Squat',
                                              reps: 5, 
                                              sets: 5, 
                                              weight: 100.0])
end

当我运行rake db：reset时出现以下错误：

~/db/seeds.rb:14: warning: duplicated key at line 19 ignored: :exercises_attributes

结果是Squat练习被添加并且Bench Press练习被忽略。知道如何解决这个问题，以便创造两者吗？

Answer 1

您收到重复键错误，因为您在Workout.create来电中指定了两次。

尝试只发送一次，但是使用哈希数组，以便将两个练习放入同一个数组中：

5.times do |i|
  Workout.create(name: i, exercises_attributes: [ 
    {
      name: 'Bench Press',
      reps: 5, 
      sets: 5, 
      weight: 200.0
    },
    {
      name: 'Squat',
      reps: 5, 
      sets: 5, 
      weight: 100.0
    }]
  )
end

播种嵌套模型，重复键错误

1 个答案: