public static MvcHtmlString TranslateByCulture(this HtmlHelper helper, Expression <Func <object> > model, Type customAttribute, CultureInfo culture, params object[] formatArguments)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (customAttribute == null)
{
throw new ArgumentNullException(nameof(customAttribute));
}
if (culture == null)
{
throw new ArgumentNullException(nameof(culture));
}
if (!typeof(Attribute).IsAssignableFrom(customAttribute))
{
throw new ArgumentException($"Given type `{customAttribute.FullName}` is not of type `System.Attribute`");
}
var resourceKey = ResourceKeyBuilder.BuildResourceKey(ExpressionHelper.GetFullMemberName(model), customAttribute);
return(new MvcHtmlString(LocalizationProvider.Current.GetStringByCulture(resourceKey, culture, formatArguments)));
}
/// <summary>
/// Gets translation for the resource (reference to the resource is specified as lambda expression).
/// </summary>
/// <param name="resource">Lambda expression for the resource.</param>
/// <param name="attribute">
/// Type of the custom attribute (registered in
/// <see cref="ConfigurationContext.CustomAttributes" /> collection).
/// </param>
/// <param name="culture">
/// If you want to get translation for other language as <see cref="CultureInfo.CurrentUICulture" />,
/// then specific that language here.
/// </param>
/// <param name="formatArguments">
/// If you have placeholders in translation to replace to - use this argument to specify
/// those.
/// </param>
/// <returns>Translation for the resource with specific key in language specified in <paramref name="culture" />.</returns>
public virtual string GetStringByCulture(
Expression <Func <object> > resource,
Type attribute,
CultureInfo culture,
params object[] formatArguments)
{
if (resource == null)
{
throw new ArgumentNullException(nameof(resource));
}
var resourceKey = _expressionHelper.GetFullMemberName(resource);
resourceKey = _keyBuilder.BuildResourceKey(resourceKey, attribute);
return(GetStringByCulture(resourceKey, culture, formatArguments));
}
/// <summary>
/// Translates the specified enum with some formatting arguments (if needed).
/// </summary>
/// <param name="target">The enum to translate.</param>
/// <param name="culture">The culture.</param>
/// <param name="formatArguments">The format arguments.</param>
/// <returns>Translated enum values</returns>
/// <exception cref="ArgumentNullException">
/// target
/// or
/// culture
/// </exception>
public static string TranslateByCulture(this Enum target, CultureInfo culture, params object[] formatArguments)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
if (culture == null)
{
throw new ArgumentNullException(nameof(culture));
}
var resourceKey = ResourceKeyBuilder.BuildResourceKey(target.GetType(), target.ToString());
return(LocalizationProvider.Current.GetStringByCulture(resourceKey, culture, formatArguments));
}
public static MvcHtmlString TranslateForByCulture <TModel, TValue>(this HtmlHelper <TModel> html,
Expression <Func <TModel, TValue> > expression,
Type customAttribute,
CultureInfo culture,
params object[] formatArguments)
{
if (customAttribute == null)
{
throw new ArgumentNullException(nameof(customAttribute));
}
if (culture == null)
{
throw new ArgumentNullException(nameof(culture));
}
if (!typeof(Attribute).IsAssignableFrom(customAttribute))
{
throw new ArgumentException($"Given type `{customAttribute.FullName}` is not of type `System.Attribute`");
}
var metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
var pi = metadata.ContainerType.GetProperty(metadata.PropertyName);
if (pi != null)
{
if (pi.GetCustomAttribute(customAttribute) == null)
{
return(MvcHtmlString.Empty);
}
}
return(new MvcHtmlString(LocalizationProvider.Current.GetStringByCulture(ResourceKeyBuilder.BuildResourceKey(metadata.ContainerType,
metadata.PropertyName,
customAttribute),
culture,
formatArguments)));
}
internal static string GetFullMemberName(Expression <Func <object> > memberSelector)
{
var memberStack = WalkExpression(memberSelector);
return(ResourceKeyBuilder.BuildResourceKey(memberStack.Pop(), memberStack));
}
