RazorPages Remote无法在型号上工作 [英] RazorPages Page Remote not working on model

问题描述

根据https://www.mikesdotnetting.com/article/343/improved-remote-validation-in-razor-pages 我遵循了教程并实现了PageRemote。然而，如果将其应用于模型的属性，并且我将该模型用作属性，则它不起作用。

public class Draft
{
    public int Id { get; set; }
    [PageRemote(ErrorMessage = "Invalid data", AdditionalFields = "__RequestVerificationToken", HttpMethod = "post", PageHandler = "CheckReference")]
    public string Reference { get; set; }

}

[BindProperty]
public Draft Draft { get; set; }

public JsonResult OnPostCheckReference()
{            
    var valid = !Draft.Reference.Contains("12345");
    return new JsonResult(valid);
}

在我的页面

<tab>
    <tab-item icon="fas fa-arrow-left" url="@Url.Page("../Index")"></tab-item>
    <tab-item icon="fas fa-list" url="@Url.Page("Index")"></tab-item>
    <tab-item icon="fas fa-plus" is-active="true"></tab-item>
</tab>
<form method="post">
    <card>
        <card-header icon="fas fa-plus" title="Draft"></card-header>
        <card-body>

            <input asp-for="Draft.Reference" />
            <span asp-validation-for="Draft.Reference" class="text-danger"></span>

        </card-body>
        <card-footer>
            <button class="btn btn-success"><i class="fas fa-plus"></i> Adicionar </button>
        </card-footer>
    </card>
</form>
@section Scripts{

    @{ await Html.RenderPartialAsync("_ValidationScriptsPartial"); }
    <script src="~/lib/jquery-ajax-unobtrusive/dist/jquery.unobtrusive-ajax.min.js"></script>

}

推荐答案

对嵌套模型属性进行远程验证并非易事。框架为所有其他字段添加模型名称前缀，因此请求验证失败，从而导致400错误。

解决方法是将您想要远程验证的字段从子模型中分离出来，并使其成为PageModel的一级属性。然后，如果ModelState有效，则将该值赋给嵌套模型。

public class Draft
{
    public int Id { get; set; }

    public string Reference { get; set; }

}

[BindProperty]
public Draft Draft { get; set; }

[BindProperty, PageRemote(ErrorMessage = "Invalid data", AdditionalFields = "__RequestVerificationToken", HttpMethod = "post", PageHandler = "CheckReference")]
public string Reference {get;set;}

public JsonResult OnPostCheckReference()
{            
    var valid = !Reference.Contains("12345");
    return new JsonResult(valid);
}

然后在表单中：

<input asp-for="Reference" />
<span asp-validation-for="Reference" class="text-danger"></span>

这篇关于RazorPages Remote无法在型号上工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！