JSON validation for laravel-translatable column

sql

ALTER TABLE user
ADD CONSTRAINT attributes_are_valid check(
 JSON_SCHEMA_VALID('{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "patternProperties" : {
    "^[a-z][a-z]$": {                                 
      "type": "string"
    }
  },
  "minProperties": 1,
  "additionalProperties": false
}', slug
)
);