CheckboxList

Custom Item Render

CheckboxList can get data from an Url, which must return a collection of KeyContent.
An additional parameter is sent to the Url using the Parameter extension.
Using a custom render function for the Item by setting ItemFunc property.

CheckboxList/Index.cshtml

@(Html.Awe().CheckboxList(new CheckboxListOpt
{
    Name = "Meals",
    Url = Url.Action("GetMealsImgByCateg", "Data"),
    ItemFunc = "site.imgItem"
}.Parameter("categories", DemoCache.Categories[0].Id)))

Awesome/DataController.cs

public IActionResult GetMealsImgByCateg(int[] categories)
{
    var url = Url.Content(DemoUtils.MealsUrl);                        
    categories = categories ?? new int[] { };

    var items = mcx.Meals.Where(o => categories.Contains(o.Category.Id))
        .Select(o => new MealDisplay(o.Id, o.Name, url + o.Name + ".jpg", o.Category.Id));

    return Json(items);
}

Cascade

CheckboxList/Index.cshtml

@(Html.Awe().RadioButtonList(new RadioButtonListOpt
{
    Name = "CatDd",
    Url = Url.Action("GetCategories", "Data"),
    Value = DemoCache.Categories[2].Id
}))

@(Html.Awe().CheckboxList(new CheckboxListOpt
{
    Name = "MealsDd",
    AutoSelectFirst = true,
    Url = Url.Action("GetMeals", "Data")
}.Parent("CatDd", "categories")))

Awesome/DataController.cs

public IActionResult GetMeals(int[] categories)
{
    categories = categories ?? new int[] { };
    var items = mcx.Meals.Where(o => categories.Contains(o.Category.Id))
        .Select(o => new KeyContent(o.Id, o.Name));

    return Json(items);
}

Toggle select all

CheckboxList/Index.cshtml

<div class="ib">
    <button type="button" class="awe-btn" onclick="toggleChkl('chklCatAll')">toggle select all</button>
    <br />
    <br />
    @(Html.Awe().CheckboxList(new CheckboxListOpt { Name = "chklCatAll", Url = Url.Action("GetCategories", "Data") }))
</div>
<script>
    function toggleChkl(id) {
        var f = $('#' + id).parent();
        f.find(':checkbox').prop('checked', !f.find(':checkbox').first().prop('checked')).change();
    }
</script>

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