Ajv Schema Validation For Nested Object

Functions returns object which looks something like this: { 'answer': { 'vehicle_type': 1, 'message': 'Car' }, 'model': 'VW',

Solution 1:

You can use "oneOf" property for that.

Where you will have "one of" a vehicle type 1, or a type 2. Type 1 has certain required properties while type 2 has different required properties.

For example:

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "http://some.site.somewhere/entry-schema#",
  "oneOf": [
    {"$ref": "#/definitions/type1"},
    {"$ref": "#/definitions/type2"}
  ],
  "definitions": {
    "type1": {
      "type": "object",
      "properties": {
        "answer": {
          "type": "object",
          "properties": {
            "vehicle_type": {
              "type": "integer",
              "enum": [1]
            },
            "message": {
              "type": "string"
            }
          }
        },
        "model": {
          "type": "string"
        },
        "color": {
          "type": "string"
        }
      },
      "required": [
        "model",
        "color"
      ]
    },
    "type2": {
      "type": "object",
      "properties": {
        "answer": {
          "type": "object",
          "properties": {
            "vehicle_type": {
              "type": "integer",
              "enum": [2]
            },
            "message": {
              "type": "string"
            }
          }
        },
        "engine_count": {
          "type": "integer"
        },
        "seat_count": {
          "type": "integer"
        },
        "wing_count": {
          "type": "integer"
        }
      },
      "required": [
        "engine_count",
        "seat_count",
        "wing_count"
      ]
    }
  }
}