遠程屬性不允許發佈

Question

有一個痛苦簡單的博客帖子創建者，並且我試圖檢查帖子的名稱是否已被使用。 Ajax發回正確，但該頁面不會允許我提交，並且不會拋出任何錯誤。如果我在Create（）操作中設置了斷點，它們從不會被擊中。

的型號：

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

    [Required] 
    [Remote("CheckPostName","Home")] 
    public string Name { get; set; } 

    [Required] 
    public string Author { get; set; } 

    public DateTime Date { get; set; } 

    [StringLength(400)] 
    public string Content { get; set; } 
} 

阿賈克斯行動：

public bool CheckPostName(string Name) 
{ 
    bool result = db.Posts.Where(a => a.Name.Equals(Name)).Count() == 0; 
    return result; 
} 

的提交操作：

[HttpPost] 
    public ActionResult Create(Post thePost) 
    { 
     if (ModelState.IsValid) 
     { 
      db.Posts.Add(thePost); 
      db.SaveChanges(); 

      return View(); 
     } 
     return View(thePost); 
    } 

和視圖：

@using (Html.BeginForm()) { 
@Html.ValidationSummary() 
<fieldset> 
    <legend>Post</legend> 

    <div class="editor-label"> 
     @Html.LabelFor(model => model.Name) 
    </div> 
    <div class="editor-field"> 
     @Html.EditorFor(model => model.Name) 
     @Html.ValidationMessageFor(model => model.Name) 
    </div> 

    <div class="editor-label"> 
     @Html.LabelFor(model => model.Author) 
    </div> 
    <div class="editor-field"> 
     @Html.EditorFor(model => model.Author) 
     @Html.ValidationMessageFor(model => model.Author) 
    </div> 

    <div class="editor-label"> 
     @Html.LabelFor(model => model.Content) 
    </div> 
    <div class="editor-field"> 
     @Html.TextAreaFor(model => model.Content) 
     @Html.ValidationMessageFor(model => model.Content) 
    </div> 

    <p> 
     <input type="submit" value="Create" /> 
    </p> 
</fieldset> 
} 

Answer 1

確保您從推測驗證數據的AJAX控制器動作返回JSON：

public ActionResult CheckPostName(string Name) 
{ 
    bool result = db.Posts.Where(a => a.Name.Equals(Name)).Count() == 0; 
    return Json(result, JsonRequestBehavior.AllowGet); 
} 

記住：控制器動作必須始終返回一個ActionResult，否則他們不是控制器操作。