rework and update deps

app/Validators/StoreValidator.ts

@@ -0,0 +1,22 @@
+import { HttpContextContract } from '@ioc:Adonis/Core/HttpContext'
+import {rules, schema} from '@ioc:Adonis/Core/Validator'
+
+export default class StoreValidator {
+  constructor (private ctx: HttpContextContract) {
+  }
+
+  public schema = schema.create({
+    code: schema.string({}, [
+      rules.unique({table: 'links', column: 'code' }),
+      rules.maxLength(10)
+    ]),
+    target: schema.string({}),
+  })
+
+  public cacheKey = this.ctx.routeKey
+
+  public messages = {
+    'code.unique': 'The code already exist !',
+    'code.maxLength': 'The code is too long ! (max 10 caracteres)'
+  }
+}