AjaxRadioList

Cascading Radio button list using binding to Parent

AjaxRadioList needs an url, js func or controller to get data from, it will render a list of radiobuttons
As with most awesome controls, you can bind the AjaxRadioList to one or more parents, and when the parent changes value the child will load and get the parent values as parameters in its data function

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioListFor(o => o.ParentCategory)
             .Url(Url.Action("GetCategories", "Data")))
@(Html.Awe().AjaxRadioListFor(o => o.ChildMeal)
                .Url(Url.Action("GetMeals", "Data"))
                .Parent(o => o.ParentCategory, "categories"))

Awesome/DataController.cs

public IActionResult GetCategories()
{
    return Json(Db.Categories.Select(o => new KeyContent(o.Id, o.Name)));
}

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

    return Json(items);
}

Client data

Besides remote data using .Url(str), it can also get data from the client using .DataFunc(jsFunc), the jsFunc can return the items or a Promise

AjaxRadioListDemo/Index.cshtml

<script>
    function getClientData() {
        return [{ k: 1, c: 'Fruits' }, { k: 2, c: 'Vegetables' }, { k: 3, c: 'Nuts' }];
    }
</script>
@(Html.Awe().AjaxRadioList("CatClient1")
    .DataFunc("getClientData")
    .Value(2)
    .Ochk())

Ochk

AjaxRadioListDemo/Index.cshtml

<div class="ib arl">
    @(Html.Awe().AjaxRadioList("ParentCatOchk")
        .Value(Db.Categories[2].Id)
        .Ochk()
        .DataFunc(Url.Action("GetCategories", "Data").CacheGetFunc()))
</div>
<div class="ib arl">
    @(Html.Awe().AjaxRadioList("ChildMealOchk")
        .DataFunc("getMealsChild")
        .Ochk(o => o.ItemFunc("awem.imgItem"))
        .Value(new[] { 185, 187 })
        .Parent("ParentCatOchk", "categories"))
</div>

ButtonGroup

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("CategoriesButtonGroup")
      .ButtonGroup()
      .DataFunc(Url.Action("GetCategories", "Data").CacheGetFunc()))

Odropdown

Render the radiolist as a dropdown, automatically gets search when there are more than 10 items (configurable e.g. .Odropdown(o => o.AutoSearch(5)))

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("AllMealsOdropdown")
    .Odropdown()
    .DataFunc(Url.Action("GetMealsImg", "Data").CacheGetFunc()))

Cascading Odropdowns

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("CatOdropdown")
      .Odropdown()
      .DataFunc(Url.Action("GetCategories", "Data").CacheGetFunc()))

@(Html.Awe().AjaxRadioList("MealsOdropdown")
      .Odropdown(o => o.AutoSelectFirst())
      .Url(Url.Action("GetMeals", "Data"))
      .Parent("CatOdropdown", "categories"))

Odropdown with grouped items

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("MealsGrouped")
    .Odropdown()
    .DataFunc(Url.Action("GetAllMealsGrouped", "Data").CacheGetFunc()))

Awesome/DataController.cs

public IActionResult GetAllMealsGrouped()
{
    var res = new List<Oitem>();
    var groups = Db.Meals.GroupBy(o => o.Category);
    foreach (var g in groups)
    {
        res.Add(new Oitem
        {
            Content = g.Key.Name,
            Class = "o-itm o-itmg",
            NonVal = true,
            Items = g.Select(meal => new Oitem(meal.Id, meal.Name)),
        });
    }

    return Json(res);
}

Odropdown with fav buttons

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("AllMealsFav")
    .DataFunc(Url.Action("GetMealsImg", "Data").CacheGetFunc())
    .CssClass("bigFavs")
    .Odropdown(o => o.Favs()
        .ItemFunc("awem.imgItem")
        .CaptionFunc("utils.imgCaption")))

<br />
<br />
@(Html.Awe().AjaxRadioList("AllMealsFav2")
    .DataFunc(Url.Action("GetMealsImg", "Data").CacheGetFunc())
    .CssClass("bigFavs")
    .Odropdown(o => o.Favs(3, favs:new object[]{Db.Meals[3].Id, Db.Meals[15].Id }, frozen: new object[]{ Db.Meals[5].Id })
        .ItemFunc("awem.imgItem")
        .CaptionFunc("utils.imgCaption")))

Odropdown, tree data, lazy nodes, remote search

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("RmtLazyTree")
        .Url(Url.Action("GetTreeNodesLazy", "Data"))
        .Odropdown(o => o.CollapseNodes()
             .ClearBtn()
             .PopupMinWidth(350)
             .SearchFunc("utils.osearch", Url.Action("SearchTree", "Data"))))

Awesome/DataController.cs

public IActionResult GetTreeNodesLazy(int? key)
{
    // key has value, lazy request
    var nodes = key.HasValue ?
        buildItemTrees(Db.TreeNodes.Where(o => o.Id == key)).Take(10) :

        // initial load, return roots (parent is null)
        buildItemTrees(Db.TreeNodes.Where(o => o.Parent == null).Take(10), setLazyChild: true);

    return Json(nodes);
}

/// <summary>
/// builds oitem tree collection from treeNodes collection 
/// </summary>
private IEnumerable<Oitem> buildItemTrees(IEnumerable<TreeNode> nodes, int lvl = 0, bool setLazyChild = false)
{
    var list = new List<Oitem>();
    foreach (var node in nodes)
    {
        var oitem = new Oitem { Key = node.Id.ToString(), Content = node.Name };
        list.Add(oitem);
        var children = Db.TreeNodes.Where(o => o.Parent == node);

        if (!children.Any()) continue;

        // set node as lazy after lvl 0
        if (setLazyChild && lvl > 0)
        {
            oitem.Lazy = true;
        }
        else
        {
            oitem.Items = buildItemTrees(children, lvl + 1, setLazyChild);
        }
    }

    return list;
}

public IActionResult SearchTree(string term)
{
    term = (term ?? string.Empty).ToLower();
    var result = Db.TreeNodes.Where(o => o.Name.ToLower().Contains(term)).Take(1).ToList();
    var roots = new List<TreeNode>();

    foreach (var treeNode in result)
    {
        roots.Add(getRoot(treeNode));
    }

    roots = roots.Distinct().ToList();

    var nodes = buildItemTrees(roots);
    return Json(nodes);
}

private TreeNode getRoot(TreeNode node)
{
    return node.Parent == null ? node : getRoot(node.Parent);
}

Combobox

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("AllMealsCombo")
      .Value("hi there")
      .Combobox()
      .DataFunc(Url.Action("GetMealsImg", "Data").CacheGetFunc()))

Color dropdown

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("ColorPicker1")
      .ColorDropdown(o => o.AutoSelectFirst()))

Odropdown with custom item and caption

Custom js functions are defined for rendering the items and caption of the odropdown.

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("CustomItemOdd")
        .Value(Db.Meals[1].Id)
        .DataFunc(Url.Action("GetMealsImg", "Data").CacheGetFunc())
        .Odropdown(o => o.ItemFunc("imgItem").CaptionFunc("imgCaption")))
<script>
    function imgItem(o) {
        return '<div class="o-igit"><img src="' + o.url + '" />' + o.c + '</div>';
    }

    function imgCaption(o) {
        return '<img class="cthumb" src="' + o.url + '" />' + o.c;
    }
</script>

Awesome/DataController.cs

public IActionResult GetMealsImg()
{
    var url = Url.Content(DemoUtils.MealsUrl);
    var items = Db.Meals
        .Select(o => new MealDisplay(o.Id, o.Name, url + o.Name + ".jpg", o.Category.Id));

    return Json(items);
}

Image dropdown

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("ImgDropdown")
      .DataFunc(Url.Action("GetMealsImg", "Data").CacheGetFunc())
      .ImgDropdown(o => o.AutoSelectFirst()))

Awesome/DataController.cs

public IActionResult GetMealsImg()
{
    var url = Url.Content(DemoUtils.MealsUrl);
    var items = Db.Meals
        .Select(o => new MealDisplay(o.Id, o.Name, url + o.Name + ".jpg", o.Category.Id));

    return Json(items);
}

TimePicker

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("TimePicker1")
      .TimePicker(o => o.Caption("time please").Step(15)))

Odropdown with remote search

try 'o'

Only a few items + the selected one are loaded initially using the url specified in .Url, but when the user types something in the searchbox more items are loaded by executing the specified .SearchFunc; the new loaded items will be stored/cached until a load will occur, e.g. when a parent changes it's value the component will load.
Components with the same cache key ("m1", "g") have a shared cache.

AjaxRadioListDemo/Index.cshtml

@(Html.Awe().AjaxRadioList("RemoteSearchOdropdown")
      .Odropdown(o => o.SearchFunc("utils.osearch", Url.Action("SearchMeals", "Data"), "m1"))
      .Value(197)
    .Url(Url.Action("GetMealsInit", "Data")))

@(Html.Awe().AjaxRadioList("RemoteSearchCombobox")
      .Combobox(o => o.SearchFunc("utils.osearch", Url.Action("SearchMeals", "Data"), "m1"))
      .Value(197)
      .Url(Url.Action("GetMealsInit", "Data"))) <span class="hint">try 'o'</span>

Awesome/DataController.cs

public IActionResult GetMealsInit(int? v)
{
    var items = Db.Meals.Take(3).ToList();
    var selected = Db.Meals.SingleOrDefault(o => o.Id == v);

    if (selected != null && !items.Contains(selected))
    {
        items.Add(selected);
    }

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

public IActionResult SearchMeals(string term = "")
{
    var items = Db.Meals
        .Where(o => o.Name.IndexOf(term, StringComparison.OrdinalIgnoreCase) >= 0)
        .Take(10)
        .Select(o => new KeyContent(o.Id, o.Name));

    return Json(items);
}

Remote search, external api

try 'valueinjecter'

Getting data from the git api on search using the SearchFunc. ItemFunc and CaptionFunc are used to specify custom rendering functions for the items and the caption.
Using the same cache key "g1", so searching in one control will populate the other one with data as well.

Shared/Demos/RmtSrcGit.cshtml

@(Html.Awe().AjaxRadioList("GitRepoOdropdown")
          .Load(false)
          .Odropdown(o =>
            o.SearchFunc("site.gitRepoSearch", key: "g1")
             .ItemFunc("site.gitItem")
             .CaptionFunc("site.gitCaption")
             .Caption("select a git repo")))
<span class="hint">try 'valueinjecter'</span>
<br/>
<br/>
@(Html.Awe().AjaxCheckboxList("GitRepoMultiselect")
          .Load(false)
          .Multiselect(o =>
            o.SearchFunc("site.gitRepoSearch", key: "g1")
            .ItemFunc("site.gitItem")
            .CaptionFunc("site.gitCaption")
            .Caption("select a git repo")))

Set value from get items call

AjaxRadioListDemo/Index.cshtml

<h3>Set value from get items call</h3>
@(Html.Awe().AjaxRadioList("CategorySv")
      .Odropdown(o => o.AutoSelectFirst())
      .DataFunc(Url.Action("GetCategories", "Data").CacheGetFunc()))

@(Html.Awe().AjaxRadioList("MealsSv")
      .Parent("CategorySv", "categories")
      .Url(Url.Action("GetMealsSetValue2", "Data")))

<br />
<br />
@(Html.Awe().AjaxRadioList("OrgsSv")
      .Odropdown()
      .Url(Url.Action("GetOrgSetValue", "Data")))

Awesome/DataController.cs

public IActionResult GetMealsSetValue2(int[] categories)
{
    categories = categories ?? new int[] { };

    var items = Db.Meals.Where(o => categories.Contains(o.Category.Id)).ToList();

    object value = null;
    if (items.Any())
    {
        value = items.Skip(1).First().Id;
    }

    return Json(new AweItems
    {
        Items = items.Select(o => new KeyContent(o.Id, o.Name)),
        Value = value
    });
}

public IActionResult GetOrgSetValue()
{
    var items = Db.Organisations.ToList();

    object value = null;
    if (items.Any())
    {
        value = items.Skip(2).First().Id;
    }

    return Json(new AweItems
    {
        Items = items.Select(o => new KeyContent(o.Id, o.Name)),
        Value = value
    });
}

Using predefined parameters

setting parameter parent = { Fruits, Legumes } using .Parameter and .ParameterFunc extensions

Events and Api

Showing commonly used client side api methods.
To change the value you simply call jquery .val(newvalue).change().
aweload event is handled to flash the #log div whenever the dropdown loads.
The same api methods can be used for the AjaxDropdown, AjaxCheckboxList controls and their mods.

AjaxDropdownDemo/Index.cshtml

@{
    var meal1 = Db.Meals[1];
    var meal2 = Db.Meals[2];
}

@(Html.Awe().AjaxDropdown("ddApi")
      .Url(Url.Action("ApiGetMeals", "Data")))

<br />
<br />
@Html.Awe().Button().Text("Change value to " + meal1.Name).OnClick("changeval(" + meal1.Id + ")")
@Html.Awe().Button().Text("Change value to " + meal2.Name).OnClick("changeval(" + meal2.Id + ")")

@Html.Awe().Button().Text("Load only first category").OnClick("loadFirstCat()")
@Html.Awe().Button().Text("Reload").OnClick("reload()")
@Html.Awe().Button().Text("Toggle Enable").OnClick("toggleEnable()")

<br />
<br />

<div id="log">
</div>

<script>
    var dd = $('#ddApi');

    function changeval(newVal) {
        dd.val(newVal).change();
    }

    function reload() {
        dd.data('api').load();
    }

    function loadFirstCat() {
        dd.data('api').load({ oparams: { cat1: true }});
        // oparams sets cat1 just for this call
        // params sets persistent parameters
    }

    function toggleEnable() {
        var o = dd.data('o');
        o.api.enable(!o.enb);
    }
    
    $(function() {
        dd.on('aweload', function(e, data) {
            awe.flash($('#log').html('loaded ' + data.length  + ' items'));
        });
    });
</script>

Awesome/DataController.cs

public IActionResult ApiGetMeals(int? v, bool? cat1)
{
    var items = Db.Meals;

    if (cat1.HasValue && cat1.Value)
    {
        items = items.Where(o => o.Category == Db.Categories[0]).ToList();
    }

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

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