public static IHtmlContent TextFormGroupFor <TModel, TValue>(this IHtmlHelper <TModel> html,
Expression <Func <TModel, TValue> > expression, IUkOnly UkOnlyModel = null)
{
var control = html.TextBoxFor(expression, new { @class = "form-control" });
return(BuildFormGroupForControl(html, expression, control, UkOnlyModel));
}
private static IHtmlContent BuildFormGroupForControl <TModel, TValue>(IHtmlHelper <TModel> html, Expression <Func <TModel, TValue> > expression, IHtmlContent control, IUkOnly UkOnlyModel = null)
{
var fieldName =
html.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
var hasErrors = html.ViewData.ModelState[fieldName]?.Errors != null &&
html.ViewData.ModelState[fieldName].Errors.Any();
return(new HtmlContentBuilder()
.AppendHtml(hasErrors
? "<div class='form-group form-group-error'>"
: "<div class='form-group'>")
.AppendHtml("<fieldset>")
.AppendHtml($"<legend id='{GenerateLegendId(html, expression)}'>")
.AppendHtml(html.LabelWithHintFor(expression, UkOnlyModel))
.AppendHtml("<span class=\'error-message\'>")
.AppendHtml(html.ValidationMessageFor(expression))
.AppendHtml("</span>")
.AppendHtml("</legend>")
.AppendHtml(control)
.AppendHtml("</fieldset>")
.AppendHtml("</div>"));
//var legend = new TagBuilder("legend");
//legend.Attributes.Add("id", GenerateLegendId(html, expression));
//var error = new TagBuilder("span");
//error.AddCssClass("error-message");
//error.InnerHtml.Append(html.ValidationMessageFor(expression).ToString());
//legend.InnerHtml.Append($"{html.LabelWithHintFor(expression)} {error}");
//var fieldset = new TagBuilder("fieldset");
//fieldset.InnerHtml.Append($"{legend} {control}");
//var parent = new TagBuilder("div");
//parent.AddCssClass("form-group");
//parent.InnerHtml.Append(fieldset.ToString());
//if (hasErrors)
//{
// parent.AddCssClass("form-group-error");
//}
//return new HtmlString(parent.ToString());
}
private static bool IsRequiredIfUk <TModel, TValue>(Expression <Func <TModel, TValue> > expression, IUkOnly model)
{
var memberExpression = expression.Body as MemberExpression;
if (memberExpression == null)
{
throw new InvalidOperationException("Expression must be a member expression");
}
return(memberExpression.Member.GetCustomAttribute <RequiredIfUkAddressAttribute>() != null && model.IsUk);
}
public static IHtmlContent LabelWithHintFor <TModel, TValue>(this IHtmlHelper <TModel> html, Expression <Func <TModel, TValue> > expression, IUkOnly ukOnlyModel = null)
{
var htmlFieldName = ExpressionHelper.GetExpressionText(expression);
var metadata = ExpressionMetadataProvider.FromLambdaExpression(expression, html.ViewData, html.MetadataProvider).Metadata;
var resolvedLabelText = metadata.DisplayName ?? metadata.PropertyName ?? htmlFieldName.Split('.').Last();
var optionalText = metadata.IsRequired ||
IsCompared(expression) ||
IsHiddenOptional(expression) ||
IsDateRequired(expression) ||
IsRequiredIf(expression) ||
IsAssertThat(expression) ||
IsRequireTrue(expression) ||
IsRequiredForShellfish(expression, html.ViewData.Model as IShellfishSection) ||
IsRequiredIfUk(expression, ukOnlyModel ?? html.ViewData.Model as IUkOnly) ? string.Empty : "(optional)";
return(new HtmlContentBuilder()
.AppendHtml(
$"<label class='form-label'>{resolvedLabelText} {optionalText} " +
$"<span class='form-hint'>{metadata.Description}</span></label>"));
}