7

我在 MVC5 Code-First 应用程序的大多数视图中显示了几个字段:[created_date][created_by][modified_date][modified_by]. 对于用户,我想将这些也包含在我的Edit()视图中,但与我的其他字段不同,我不希望它们可编辑(通常创建/由和修改/由数据不应该是可编辑的)。

这就是我Edit()当前在视图中声明字段的方式:

    <div class="form-group">
        @*@Html.LabelFor(model => model.created_date, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">Created Date:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.created_date, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.created_date, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @*@Html.LabelFor(model => model.created_by, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">By:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.created_by, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.created_by, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @*@Html.LabelFor(model => model.modified_date, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">Modified Date:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.modified_date, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.modified_date, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @*@Html.LabelFor(model => model.modified_by, htmlAttributes: new { @class = "control-label col-md-2" })*@
        <span class="control-label col-md-2">By:</span>
        <div class="col-md-10">
            @Html.DisplayFor(model => model.modified_by, new { htmlAttributes = new { @class = "form-control" } })
            @Html.ValidationMessageFor(model => model.modified_by, "", new { @class = "text-danger" })
        </div>
    </div>

任何人都可以提供一种方法来制作这些领域read-only吗?

DisplayFor()我在我的视图上尝试过Details,但是当我去保存记录时,我的值EditorFor()[created_date]2015-02-18 ”更改为“ 0001-01-01 ”,并且created_by从我之前设置的系统用户名更改null为验证消息“ created_by 字段是必需的。” 我相信这与我对字段的模型注释有关,但我不明白为什么DisplayFor()没有像...那样通过我的控制器传递值EditorFor()

模型注释

    [Required]
    [DataType(DataType.Date)]
    [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
    public DateTime created_date { get; set; }

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

    [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}")]
    public DateTime? modified_date { get; set; }

    public string modified_by { get; set; }
4

1 回答 1

42

DisplayFor()不会生成回发的控件。除了显示文本之外,您还需要包含一个隐藏的输入,例如

<div class="form-group">
    <span class="control-label col-md-2">@Html.DisplayNameFor(m => created_by)</span>
    <div class="col-md-10">
        @Html.DisplayFor(model => model.created_by
        @Html.HiddenFor(m => created_by)
    </div>
</div>

另一种选择是使文本框只读

<div class="form-group">
    @Html.LabelFor(model => model.created_by, new { @class = "control-label col-md-2" })
    <div class="col-md-10">
        @Html.TextBoxFor(model => model.created_by, new { @class = "form-control", @readonly = "readonly" })
    </div>
</div>

另请注意,添加没有意义@Html.ValidationMessageFor()

旁注:没有什么可以阻止用户更改隐藏输入的值(例如使用 FireBug),因此,与往常一样,使用视图模型是最好的方法(视图模型不包括“只读”上的验证属性properties),然后在发布时,获取原始数据模型并将相关的视图模型属性映射到数据模型,然后保存。

于 2015-02-18T22:21:19.830 回答