Razor页面中具有双值的输入字段的本地化

时间:2019-05-27 09:22:01

标签: c# validation asp.net-core localization razor-pages

在ViewModel中,我有一个像这样的属性:

[DisplayFormat(DataFormatString = "{0:0.00}", ApplyFormatInEditMode = true)]        
public double SomeDoubleProperty { get; set; }

标记:

<div class="form-group row">
    <label asp-for="ViewModel.SomeDoubleProperty" class="col-sm-3 col-form-label">
        @Localizer[nameof(Model.ViewModel.SomeDoubleProperty)]
    </label>
    <div class="col-sm-9">
        <div class="input-group">
            <div class="input-group-prepend">
                <span class="input-group-text">%</span>
            </div>
            <input asp-for="ViewModel.SomeDoubleProperty"
                   class="form-control">
        </div>
        <span asp-validation-for="ViewModel.SomeDoubleProperty" class="text-danger"></span>
    </div>
</div>

加载页面(默认值为0)后,它会在输入字段中显示如下:

enter image description here

(线程的当前区域性和当前ui文化是“ de”,因此十进制分隔符“,”是预期的)。

但是当我现在离开输入字段时,显示以下验证错误:

  

SomeDoubleProperty字段必须是数字。

将“,”替换为“。”时,验证器接受该值。 如果当前的ui文化是“ de”,我如何才能实现也接受“,”?

2 个答案:

答案 0 :(得分:1)

您需要下载并配置客户端验证脚本:

  • cldrjs
  • cldr-data
  • globalizejs

在项目的根目录中,创建一个名为“ libman.json”的新文件,并将以下库添加到其中:

{
  "version": "1.0",
  "defaultProvider": "jsdelivr",
  "libraries": [
    {
      "library": "cldrjs@0.5.1",
      "destination": "wwwroot/lib/cldr"
    },
    {
      "library": "cldr-data@35.1.0",
      "destination": "wwwroot/lib/cldr-data"
    },
    {
      "library": "globalize@1.4.2",
      "destination": "wwwroot/lib/globalize"
    }
  ]
}

保存文件后,它将所有脚本下载到wwwroor / lib文件夹。

然后打开wwwroot/lib/cldr-data/package.json并将以下行添加到页面结尾处的结尾处:

"peerDependencies": {
    "cldr-data": ">=26"
  }

保存文件时,它将下载所有区域性的所有json数据(编号,日期,时间,货币等)。下载可能需要一段时间(〜35MB)。

还有一个js库“ jquery.validate.globalize.min.js”需要安装,但是jsdelivr 0.1.1中的版本不兼容,我们需要v1.0,因此可以从{{ 3}},或仅使用GitHub中的jsdelivr的导入功能,如下所示:

<script src="https://cdn.jsdelivr.net/gh/johnnyreilly/jquery-validation-globalize@1.0.0/jquery.validate.globalize.min.js"></script>

然后创建一个新的局部视图,名称为“ _LocalizationValidationScriptsPartial.cshtml”,并将库添加到其中:

<!-- cldr scripts (needed for globalize) -->
<script src="/lib/cldr/dist/cldr.min.js"></script>
<script src="/lib/cldr/dist/cldr/event.min.js"></script>
<script src="/lib/cldr/dist/cldr/supplemental.min.js"></script>

<!-- globalize scripts -->
<script src="/lib/globalize/dist/globalize.min.js"></script>
<script src="/lib/globalize/dist/globalize/number.min.js"></script>
<script src="/lib/globalize/dist/globalize/date.min.js"></script>
<script src="/lib/globalize/dist/globalize/currency.min.js"></script>

<!-- this file can be downloaded from : -->
<!-- https://github.com/johnnyreilly/jquery-validation-globalize -->
<script src="https://cdn.jsdelivr.net/gh/johnnyreilly/jquery-validation-globalize@1.0.0/jquery.validate.globalize.min.js"></script>

<!-- code to get check if current cultures scripts are exists -->
<!-- if not, select parent cultures scripts -->
@inject Microsoft.AspNetCore.Hosting.IHostingEnvironment HostingEnvironment
@{
    string GetDefaultLocale()
    {
        const string localePattern = "lib\\cldr-data\\main\\{0}";
        var currentCulture = System.Globalization.CultureInfo.CurrentCulture;
        var cultureToUse = "en"; //Default regionalisation to use

        if (System.IO.Directory.Exists(System.IO.Path.Combine(HostingEnvironment.WebRootPath, string.Format(localePattern, currentCulture.Name))))
            cultureToUse = currentCulture.Name;
        else if (System.IO.Directory.Exists(System.IO.Path.Combine(HostingEnvironment.WebRootPath, string.Format(localePattern, currentCulture.TwoLetterISOLanguageName))))
            cultureToUse = currentCulture.TwoLetterISOLanguageName;

        return cultureToUse;
    }
}

<script type="text/javascript">
    var culture = "@GetDefaultLocale()";
    $.when(
        $.get("/lib/cldr-data/supplemental/likelySubtags.json"),
        $.get("/lib/cldr-data/main/" + culture + "numbers.json"),
        $.get("/lib/cldr-data/main/" + culture + "/currencies.json"),
        $.get("/lib/cldr-data/supplemental/numberingSystems.json"),
        $.get("/lib/cldr-data/main/" + culture + "/ca-gregorian.json"),
        $.get("/lib/cldr-data/main/" + culture + "/timeZoneNames.json"),
        $.get("/lib/cldr-data/supplemental/timeData.json"),
        $.get("/lib/cldr-data/supplemental/weekData.json"),
    ).then(function () {
        // Normalize $.get results, we only need the JSON, not the request statuses.
        return [].slice.apply(arguments, [0]).map(function (result) {
            return result[0];
        });
    }).then(Globalize.load).then(function () {
        Globalize.locale(culture);
    });
</script>

最后,只需在默认_ValidationScriptsPartial.cshtml之后添加此局部视图,即可完成本地化验证。

<partial name="_ValidationScriptsPartial.cshtml" />
<partial name="_LocalizationValidationScriptsPartial.cshtml" />

替代方法

我创建了一个TagHelperComponent来避免进行所有繁琐的工作,甚至不需要将脚本下载到本地。

  • 安装nuget软件包:
Install-Package LazZiya.TagHelpers -Version 2.1.0
  • 将LazZiya.TagHelpers添加到_ViewImports中:
@using LazZiya.TagHelpers
@addTagHelper *, LazZiya.TagHelpers
  • 在启动时注册本地化验证标签帮助程序组件:
services.AddTransient<ITagHelperComponent, LocalizationValidationScriptsTagHelperComponent>();
  • 将标记添加到页面的脚本部分,以验证本地化的输入字段(还必须加载默认的_ValidationScriptsPartial.cshtml):
<partial name="_ValidationScriptsPartial.cshtml" />
<localization-validation-scripts></localization-validation-scripts>

此TagHelper将自动检测当前的区域性名称,并添加用于验证本地化值的所有必需脚本。

有关更多详细信息,请参见GitHub

答案 1 :(得分:0)

由于@Laz Ziya,我找到了一个可以解决问题的组合:

ViewModel:

    [DisplayFormat(DataFormatString = "{0:0.00}", ApplyFormatInEditMode = true)]
    [Range(0, 100, ErrorMessage = "RangeAttribute_ValidationError")]
    public double SomeDoubleProperty { get; set; }

标记:

    <div class="form-group row">
        <label asp-for="ViewModel.SomeDoubleProperty" class="col-sm-3 col-form-label">
            @Localizer[nameof(Model.ViewModel.SomeDoubleProperty)]
        </label>
        <div class="col-sm-9">
            <div class="input-group">
                <div class="input-group-prepend">
                    <span class="input-group-text">%</span>
                </div>
                <input asp-for="ViewModel.SomeDoubleProperty"
                       class="form-control"
                       id="some-double-input" digit-count="2">
            </div>
            <span asp-validation-for="ViewModel.SomeDoubleProperty" class="text-danger"></span>
        </div>
    </div>
<partial name="_NumberInputPartial" />

NumberInputPartial:

 @using System.Threading;

@*To use this partial add the following attribute to the input element: digit-count="{enter requested digit count here}"*@

<script asp-location="Footer">
    function toLocalizedNumberString(numberAsString, digitCount) {
        var decimalSeparator = '@(Thread.CurrentThread.CurrentUICulture.NumberFormat.NumberDecimalSeparator)';
        var groupSeparator = '@(Thread.CurrentThread.CurrentUICulture.NumberFormat.NumberGroupSeparator)';
          var num = parseFloat(numberAsString.replace(decimalSeparator, '.'));
          return ( num
            .toFixed(digitCount)
            .replace('.', decimalSeparator)
            .replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1' + groupSeparator)
            )
    }
    $("input[digit-count]").on("focusin", function () {
        $(this).val($(this).val().replace(@("/[" + Thread.CurrentThread.CurrentUICulture.NumberFormat.NumberGroupSeparator + "]/g"), ""));
    });
    $("input[digit-count]").on("focusout", function () {
        $(this).val(toLocalizedNumberString($(this).val(), $(this).attr("digit-count")));
    });
</script>

<partial name="_ValidationScriptsPartial" />
<localization-validation-scripts></localization-validation-scripts>