$select nested object properties

[Everlasting12]

Hi @daffl I'm using FeathersJS v5.0 and Mongodb, JSON schema validator
having a user schema where fields have nested properties, I want to select only nested properties of those fields

for eg.
here's a user schema,

export const userSchema = {
  $id: 'User',
  type: 'object',
  additionalProperties: true,
  required: ['_id', 'email', 'name', 'address'],
  properties: {
	_id: ObjectIdSchema(),
	email: { type: 'string', format: 'email' },
	name: { type: 'string' },
 	address: {
 	    type: 'object',
      	properties: {
      	    name:{type:'string'},
      	    city:{type:'string'},
      	    country:{type:'string'},
      	    coordinates:{type:'array', items: { type: 'number' } },
      	},
      	required: ['name', 'city', 'country', 'coordinates'],
      	additionalProperties: false,
	}
}

in this case, I want only email, name, and "address.city" fields from the user's collection,

we are getting those wanted fields from the front-end side in $select query params
this would be dynamic in nature i.e. tomorrow front-end might ask for "address.country" instead of "address.city"

my context.params.query object would look like this:

context.params.query = {
      $select:["name","email","address.city"]
}

currently I am getting this validator error as a response

{
	"name": "BadRequest",
	"message": "validation failed",
	"code": 400,
	"className": "bad-request",
	"data": [
		{
			"instancePath": "/$select/1",
			"schemaPath": "#/properties/%24select/items/enum",
			"keyword": "enum",
			"params": {
				"allowedValues": [
					"name",
					"email",
					"address",
				]
			},
			"message": "must be equal to one of the allowed values"
		}
	]
}