artdanj-api/app/Validators/translation/TranslationUpdateValidator.ts

import {rules, schema} from '@ioc:Adonis/Core/Validator'
import {HttpContextContract} from '@ioc:Adonis/Core/HttpContext'

export default class TranslationUpdateValidator {
  public schema = schema.create({
    code: schema.string({}, [
      rules.unique({
        table: 'translations',
        column: 'code'
      })
    ]),
    english: schema.string.optional(),
    french: schema.string.optional()
  })
  public messages = {
    required: 'The field {{field}} is required',
    'code.unique': 'The translation code is not unique !'
  }

  constructor (protected ctx: HttpContextContract) {
  }
}