表单的"验证"方法不会显示错误

Question

我有一个标准的,简单的代码来验证用户:

# controller
  val addForm = Form(
    tuple("email" -> nonEmptyText, "password" -> nonEmptyText)
      .verifying("Invalid email or password", result => User.authenticate(result._1, result._2).isRight)
  )

  def add = Action { Ok(views.html.session.add(addForm)) }


  def create = Action {
    addForm.bindFromRequest.fold(
      failure => BadRequest(views.html.session.add(failure)),
      success => Redirect(routes.Home.index)
        .flashing("key1" -> "You have logged in.")
    )
  }

我希望它能显示错误,如果没有,User.authenticate(result._1, result._2).isRight但没有出现错误.是的,身份验证运行良好,但失败时没有错误.

@helper.form(action = routes.Session.create()) {

    @helper.inputText(form("email"))
    @helper.inputText(form("password")) 
    <!-- ........... -->
  }

为什么？

Answer 1

你有没有检查你的观点

@if(addForm.hasErrors) { ... }

例如,基本布局可能是:

@if(addForm.hasErrors) {
  <div class="alert-message error">
    <p>Please correct the following:</p>
    <ul>
      @addForm.errors.map { error =>
        <li>@error.key @error.message</li>
      }
    </ul>
  </div>
}