how to validate json types attributes in rails code example

Example 1: rails json schema validation

gem 'activerecord_json_validator'

Example 2: rails json schema validation

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-04/schema",
  "properties": {
    "city": { "type": "string" },
    "country": { "type": "string" }
  },
  "required": ["country"]
}