public static MvcHtmlString PartialFor <TModel, TProperty>(this HtmlHelper <TModel> helper, Expression <Func <TModel, TProperty> > expression, string partialViewName)
{
string name = ExpressionHelper.GetExpressionText(expression);
object model = ModelMetadata.FromLambdaExpression(expression, helper.ViewData).Model;
var viewData = new ViewDataDictionary(helper.ViewData)
{
TemplateInfo = new TemplateInfo {
HtmlFieldPrefix = name
}
};
return(helper.Partial(partialViewName, model, viewData));
}
// public static HelpMessage HelpMessageFor<TModel, TProperty>(this HtmlHelper<TModel> helper, Expression<Func<TModel, TProperty>> expression, string classname)
// {
// var name = helper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
// var help = helper.ViewContext.ViewData["help"] as string;
// var m = helper.ViewData.ModelState[name];
// if (m == null && help == null)
// return new HelpMessage();
// var b = new TagBuilder("span");
// b.AddCssClass(classname);
// var hasError = false;
// if (m != null && m.Errors.Count > 0)
// {
// b.SetInnerText(m.Errors[0].ErrorMessage);
// hasError = true;
// }
// else if (help != null)
// b.InnerHtml = help;
// else
// return new HelpMessage();
// return new HelpMessage { message = new HtmlString(b.ToString()), errorClass = hasError ? "error" : "" };
// }
public static MvcHtmlString ValidationMessageLabelFor <TModel, TProperty>(this HtmlHelper <TModel> html, Expression <Func <TModel, TProperty> > expression, string errorClass = "error")
{
string elementName = ExpressionHelper.GetExpressionText(expression);
MvcHtmlString normal = html.ValidationMessageFor(expression);
if (normal != null)
{
string newValidator = Regex.Replace(normal.ToHtmlString(), @"<span([^>]*)>([^<]*)</span>", string.Format("<label for=\"{0}\" $1>$2</label>", elementName), RegexOptions.IgnoreCase);
if (!string.IsNullOrWhiteSpace(errorClass))
{
newValidator = newValidator.Replace("field-validation-error", errorClass);
}
return(MvcHtmlString.Create(newValidator));
}
return(null);
}
public static HtmlString HiddenFor2 <TModel, TProperty>(this HtmlHelper <TModel> htmlHelper, Expression <Func <TModel, TProperty> > expression)
{
var tb = new TagBuilder("input");
tb.MergeAttribute("type", "hidden");
var name = ExpressionHelper.GetExpressionText(expression);
var v = htmlHelper.ViewData.Eval(name);
var prefix = htmlHelper.ViewData.TemplateInfo.HtmlFieldPrefix;
if (Util.HasValue(prefix))
{
name = prefix + "." + name;
}
tb.MergeAttribute("name", name);
if (v != null)
{
tb.MergeAttribute("value", v.ToString());
}
else
{
tb.MergeAttribute("value", "");
}
return(new HtmlString(tb.ToString()));
}
public static string NameFor2 <TModel, TProperty>(this HtmlHelper <TModel> htmlHelper, Expression <Func <TModel, TProperty> > expression)
{
return(htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression)));
}
public static string GetIdFor <M, P>(this M model, Expression <Func <M, P> > ex)
{
return(ExpressionHelper.GetExpressionText(ex).ToSuitableId());
}
public static string GetNameFor <M, P>(this M model, Expression <Func <M, P> > ex)
{
return(ExpressionHelper.GetExpressionText(ex));
}
public static MvcHtmlString LocalizedLabelFor <TModel, TValue>(this HtmlHelper html, Expression <Func <TModel, TValue> > expression)
{
var label = Localize(expression);
return(label != null?html.Label(ExpressionHelper.GetExpressionText(expression), label.ToString()) : html.Label(ExpressionHelper.GetExpressionText(expression)));
}
public static MvcHtmlString CollectionItemClientIdFor <TModel, TValue>(this HtmlHelper <TModel> htmlHelper, Expression <Func <TModel, TValue> > expression)
{
var fullName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
var sanitizedId = TagBuilder.CreateSanitizedId(fullName) ?? fullName;
return(new MvcHtmlString(
sanitizedId
.Replace(".", HtmlHelper.IdAttributeDotReplacement)
.Replace("[", HtmlHelper.IdAttributeDotReplacement)
.Replace("]", HtmlHelper.IdAttributeDotReplacement)
));
}
