public void CreateSelectForWithNoModelDoesNotSelectAnything()
{
var model = new SelectModelTest();
var items = new SelectList(model.Countries, "Id", "Name");
var tag = HtmlTagBuilder.CreateSelectFor<SelectModelTest, int>(m => m.SelectedCountryId, items);
Assert.IsFalse(tag.Childs.Any(child => child.Attribute("selected") != null));
}
public void CreateSelectForDoesNotSelectAnythingByDefault()
{
var model = new SelectModelTest();
var items = SelectList.CreateFrom(model.Countries, cm => cm.Id, cm => cm.Name);
var tag = HtmlTagBuilder.CreateSelectFor(model, m => m.SelectedCountryId, items);
Assert.IsFalse(tag.Childs.Any(child => child.Attribute("selected") != null));
}
public static IHtmlString DropDownListFor <TModel, TR>(this HtmlHelpers <TModel> html,
Expression <Func <TModel, TR> > prop, SelectList items) where TModel : class
{
var tag = HtmlTagBuilder.CreateSelectFor(html.Model, prop, items);
return(tag != null ? new NonEncodedHtmlString(tag.ToString()) : NonEncodedHtmlString.Empty);
}
public void CreateSelectForWithNoModelSelectsItemBasedOnSelectList()
{
var model = new SelectModelTest();
var items = new SelectList(model.Countries, "Id", "Name", 2);
var tag = HtmlTagBuilder.CreateSelectFor<SelectModelTest, int>(m => m.SelectedCountryId, items);
Assert.AreEqual(2.ToString(), tag.Childs.Single(child =>
child.Attribute("selected") != null).Attribute("value").Value);
}
public void CreateSelectForSelectsItemBasedOnSelectList()
{
var model = new SelectModelTest();
var items = SelectList.CreateFrom(model.Countries, cm => cm.Id, cm => cm.Name);
items.Last().Selected = true;
var tag = HtmlTagBuilder.CreateSelectFor(model, m => m.SelectedCountryId, items);
var child = tag.Childs.Single(c => c.Attribute("selected") != null);
Assert.AreEqual(items.Last().Value, child.Attribute("value").Value);
}
public static IHtmlString DropDownListFor <TModel, TS, TV, TT>(this HtmlHelpers <TModel> html,
Expression <Func <TModel, IEnumerable <TS> > > source,
Expression <Func <TModel, TV> > propModelValue,
Expression <Func <TS, TV> > propItemValue, Expression <Func <TS, TT> > propItemText) where TModel : class
{
var model = html.Model;
if (model == null)
{
return(NonEncodedHtmlString.Empty);
}
var sourceProperty = source.AsPropertyInfo();
var items = sourceProperty.GetValue(model) as IEnumerable <TS>;
var list = SelectList.CreateFrom(items, propItemValue, propItemText);
var tag = HtmlTagBuilder.CreateSelectFor(model, propModelValue, list);
return(tag != null ? new NonEncodedHtmlString(tag.ToString()) : NonEncodedHtmlString.Empty);
}