MultiLookup

The MultiLookup is similar to the

Lookup

helper except it is used to select many items instead of one. It can be declared like this:

@Html.Awe().MultiLookupFor(o => o.Meal)
@Html.Awe().MultiLookup("Meal1").Controller("MealLookup")

Data binding

It needs a controller to get data from, the controller must have 3 actions:

GetItems

- display the selected values

Search

- popup search

Selected

- popup selected items Instead of specifying a controller 3 urls can be specified using these extensions

.GetItemsUrl(str)

,

.SearchUrl(str)

,

.SelectedUrl(str)

. Both the

Search

and

Selected

actions will get the

selected

parameter which in case of

Search

action will be used to exclude the selected items from the search result, and in case of

Selected

action will be used to get the selected items, example:

public class CategoriesMultiLookupController : Controller
{
    public ActionResult GetItems(int[] v)
    {
        return Json(Db.Categories.Where(o => v != null && v.Contains(o.Id))
                        .Select(f => new KeyContent(f.Id, f.Name)));
    }

    public ActionResult Search(string search, int[] selected)
    {
        return Json(new AjaxListResult
        {
            Items = Db.Categories.Where(o => o.Name.Contains(search) && (selected == null || !selected.Contains(o.Id)))
                .Select(o => new KeyContent(o.Id, o.Name))
        });
    }

    public ActionResult Selected(int[] selected)
    {
        return Json(new AjaxListResult
                {
                    Items = Db.Categories.Where(o => selected != null && selected.Contains(o.Id))
                        .Select(o => new KeyContent(o.Id, o.Name))
                });
    }
}

For custom search have a look at the Lookup helper