如何使用具有 2 个 ID 的 mongoose 推送到嵌套数据？

Question

I have this Node push function but it works only on 1 level nested objects I need it to drill deeper in to a second id in the DB model any one with such experience?

 // One level functional using one id finds the user and update const update = await Budget.findOneAndUpdate( { '_id': `${id}` }, { '$push': { [`${sliceLeft}`]: location } }, { _id: true, new: true } ) // Dysfunctional.: how to implement second id targeting to that nested lvl2 deep object let updateDeptArr = await Budget,findOneAndUpdate( { '_id': `${id}` }. //User id { '$push'. { [`${sliceLeft}:$,_id`//Second ID ]: location// Data } }, { _id: true, new: true } )

Answer 1

To use $ operator, the array field must appear as part of the query document. So your query should be something like:

let updateDeptArr = await Budget.findOneAndUpdate(
  { 
    '_id': `${id}`,
    [`${sliceLeft}._id`]: YOUR_SECOND_ID
  }, 
  {
    '$push': {
       // Nested array field is dayOutcome refer to OP's comment
       [`${sliceLeft}.$.dayOutcome`]: location
    }
  }...