/// <summary>
/// Updates the given component with the current value of the property denoted in the expression and also sets the
/// validation state
/// </summary>
/// <param name="html">Current <see cref="HtmlHelper" /></param>
/// <param name="bfc">Form component to set value for</param>
/// <param name="expression">Model property expression</param>
/// <param name="value">Value to update component with</param>
private static void UpdateComponent <TModel, TValue>(this HtmlHelper <TModel> html,
IBootstrapFormComponent <TModel, TValue> bfc, Expression <Func <TModel, TValue> > expression, string value = "")
{
bool isValid = html.IsValidFor(expression);
if (!isValid)
{
bfc.Wrapper.CssClasses.Add("has-error");
}
if (!string.IsNullOrEmpty(value))
{
bfc.SetValue(value);
return;
}
if (html.ViewData.Model == null)
{
return;
}
object result = string.Empty;
try
{
result = expression.Compile().DynamicInvoke(html.ViewData.Model);
}
catch (Exception)
{
// ignore
}
bfc.SetValue(result == null ? string.Empty : result.ToString());
}
/// <summary>
/// Changes render behavior to add on
/// </summary>
/// <returns>The updated form control</returns>
public static IFormControl <TModel, TValue> WithDefaultBehavior <TModel, TValue>(
this IFormControl <TModel, TValue> control)
{
IBootstrapFormComponent <TModel, TValue> component = control.Component as IBootstrapFormComponent <TModel, TValue>;
if (component == null)
{
return(control);
}
component.WithDefaultBehavior();
return(control);
}