ImmutableJS：按活动ID获取Todos数组

Question

我可以使用temp.get获得Activity（＆＃39; Activity＆＃39;）;

如何按活动ID获取Todos数组？

Activity > id: 1 > Todos [All Objects]

var temp = Immutable.fromJS([
      {
        id: 1, userName: 'test', isActive: true,
        Activity: [
          {
            id: 1, text: 'This is Activity 1', isCompleted: false, addedOn: '', Todos: [
              { id: 1, text: 'Activity 1 Todo 1', isCompleted: false, progress: [1] },
              { id: 2, text: 'Activity 1 Todo 2', isCompleted: true,  progress: [2] },
              { id: 3, text: 'Activity 1 Todo 3', isCompleted: false, progress: [3] }
            ]
          }, {
            id: 2, text: 'This is Activity 2', isCompleted: false, addedOn: '', Todos: [
              { id: 1, text: 'Activity 2 Todo 1', isCompleted: true, progress: [4] },
              { id: 2, text: 'Activity 2 Todo 2', isCompleted: false, progress: [5] },
              { id: 3, text: 'Activity 2 Todo 3', isCompleted: false, progress: [6] }
            ]
          }
        ],
      }])

修改

以下是更多信息

const result = temp.find(function(obj){return (obj.get('id') === 1 && obj.get('isActive'));});
console.log(result.getIn(['Activity', '0', 'Todo']));

['Activity', '0', 'Todo']得到我想要的但问题是活动是通过索引检索的，但我希望它按属性ID 。