apoc.map.updateTree

Details
Syntax	`apoc.map.updateTree(tree, key, data)`
Description	Adds the data `MAP` on each level of the nested tree, where the key-value pairs match.
Arguments	Name	Type	Description
	`tree`	`MAP`	The map to be updated.
	`key`	`STRING`	The name of the key to match on.
	`data`	`LIST<LIST<ANY>>`	A list of pairs, where the first item is the value to match with the given key, and the second is a map to add to the tree.
Returns	`MAP`

Usage Examples

The following updates a nested map, adding additional key/values based on the value of the id key:

RETURN apoc.map.updateTree({
  id:1,
  c:{
    id:2
  },
  d:[
    {id:3},
    {id:4}
  ],
  e: {notId: 5}
},'id',[
  [1,{description: "Added where id=1"}],
  [2,{description: "Added where id=2"}],
  [3,{description: "Added where id=3"}],
  [4,{description: "Added where id=4"}]
]) AS value;

Output

Results
Output
`{ "id": 1, "description": "Added where id=1", "c": { "id": 2, "description": "Added where id=2" }, "d": [ { "id": 3, "description": "Added where id=3" }, { "id": 4, "description": "Added where id=4" } ], "e": { "notId": 5 } }`

{
  "id": 1,
  "description": "Added where id=1",
  "c": {
    "id": 2,
    "description": "Added where id=2"
  },
  "d": [
    {
      "id": 3,
      "description": "Added where id=3"
    },
    {
      "id": 4,
      "description": "Added where id=4"
    }
  ],
  "e": {
    "notId": 5
  }
}