MultiLookup

Pick some Meals:

MultiLookup needs a controller or urls to be specified, by default convention it will look for a controller with the same name as it + "MultiLookupController"

action GetItems - used to show the value in the readonly field, it will receive a v parameter which is going to be the keys of the selected items
action Search - gets data for the search result in it's popup, it receives a selected parameter that represents the selected values, it should return a Json(AjaxListResult), so it has same features as the AjaxList (table layout, custom item template)
action Selected - gets data for the selected items in the popup

MultiLookupDemo/IndexContent.cshtml

@(Html.Awe().MultiLookupFor(o => o.Meals)
      .Controller<MealsMultiLookupController>()
      .ClearButton(Model.ClearButton)
      .HighlightChange(Model.HighlightChange)
      .DragAndDrop(Model.DragAndDrop)
      .Fullscreen(Model.Fullscreen))

Awesome/MultiLookup/MealsMultiLookupController.cs

public class MealsMultiLookupController : Controller
{
    public IActionResult GetItems(int[] v)
    {
        var items = new List<Meal>();
        if (v != null)
        {
            items.AddRange(v.Select(Db.Get<Meal>));
        }

        return Json(items.Select(meal => new KeyContent(meal.Id, meal.Name)));
    }

    public IActionResult Search(string search, int[] selected, int page)
    {
        const int pageSize = 10;
        selected = selected ?? new int[] { };
        search = (search ?? "").ToLower().Trim();

        var items = Db.Meals.Where(o => o.Name.ToLower().Contains(search) && !selected.Contains(o.Id));

        return Json(new AjaxListResult
                        {
                            Items = items.Skip((page - 1) * pageSize).Take(pageSize).Select(o => new KeyContent(o.Id, o.Name)),
                            More = items.Count() > page * pageSize
                        });
    }

    public IActionResult Selected(int[] selected)
    {
        var items = new List<Meal>();
        if (selected != null)
        {
            items.AddRange(selected.Select(Db.Get<Meal>));
        }
        
        return Json(new AjaxListResult
                        {
                            Items = items.Select(o => new KeyContent(o.Id, o.Name))
                        });
    }
}

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