Inserting data to nested array in mongodb

Question

I have a document which looks like this

{
 _id:1,
 list_id:23,
 name:\'list01\'
 cards:[
  {
   id:3,
   name:\'card01\'
   categories:[{
    id:10,
    categ         


        

Answer 1

You can not use multiple $ positional, for your case you can use single positional and arrayFilters,

The filtered positional operator $[] identifies the array elements that match the arrayFilters conditions for an update operation,

db.collection(TABLE).updateOne({
  list_id: 23,
  "cards.categories.category": "section01"
},
{
  $push: {
    "cards.$.categories.$[elem].tags": {
      name: "tag02",
      id: uuidv4(),
      is_selected: true
    }
  }
},
{
  arrayFilters: [
    { "elem.category": "section01" }
  ]
})

Playground