Filtering TaxonomyControl

Posted by Community Admin on 23-Jun-2011 00:00

I was wanting to use the TaxonomyControl to display the categories for the news, but I was wanting to only show the categories at a certain node. Is there a way for me to set the TaxonomyControl to use a child node for the Category taxonomies as the starting point?

So you have this break down for categories:
Cat 1
Cat 2
    Cat sub 1
    Cat sub 2
    Cat sub 3
        Cat child sub 1
        Cat child sub 2

In this scenario, I would like to use the TaxonomyControl to display only the taxonomies starting at the node "Cat Sub 3". I know how to get the Id (GUID) for the node, but not sure how I could go about filtering the control.

Edit::
I am not sure if this ever got built into the latest build, so I would like to know if this is/will be possible with the current or future release? Till then, I am hoping that the information from this post will help me achieve what I am looking for.
http://www.sitefinity.com/devnet/forums/sitefinity-4-x/general-discussions/how-to-use-classifications-gt-categories-widget.aspx

Posted by Community Admin on 24-Jun-2011 00:00

Hello Richard,

Here is a sample code that inherits from the base TaxonomyControl and shows how to filter by a certain tag which ID you should pass the the exposed public property

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Telerik.Sitefinity.Web.UI.PublicControls;

using Telerik.Sitefinity.Web.UI;

using Telerik.Sitefinity.Taxonomies.Model;

using Telerik.Sitefinity.Lists.Model;

namespace Telerik.Sitefinity.Samples1

public class TaxonomyControlCustom : TaxonomyControl

protected override string LayoutTemplateName

get

return null;

public override string FieldName

get

return "Category";

public override Guid TaxonomyId

get

return new Guid("e5cd6d69-1543-427b-ad62-688a99f5e7d4");

public Guid RootTaxon

get

return this._rootTaxon;

set

this._rootTaxon = value;

public override string LayoutTemplatePath

get

return TaxonomyControlCustom.layoutTemplatePath;

protected override void InitializeTaxaList()

Dictionary<ITaxon, uint> taxonCountMap = null;

if (this.ContentId != Guid.Empty)

taxonCountMap = this.GetTaxaFromContentItem();

else

taxonCountMap = this.GetTaxaItemsCountForTaxonomy();

var taxonomyId = this.TaxonomyId;

var stats =

this.CurrentTaxonomyManager.GetStatistics().Where(

t =>

t.TaxonomyId == taxonomyId &&

t.MarkedItemsCount > 0 &&

t.StatisticType == GenericContent.Model.ContentLifecycleStatus.Live);

if (this.ContentType != null)

var typeName = this.ContentType.FullName;

stats = stats.Where(t => t.DataItemType == typeName);

var count = stats.Count();

if (count > this.TaxaCount && this.TaxaCount > 0)

this.SeeAllTaxaLink.Visible = true;

this.SeeAllTaxaLink.Text = string.Format(this.SeeAllTextFormat, count, this.Taxonomy.Title.ToLower());

this.SeeAllTaxaLink.NavigateUrl = this.BaseUrl;

var singleTaxon = taxonCountMap.Single(kvp => ((HierarchicalTaxon)kvp.Key).Id == RootTaxon);

IList<HierarchicalTaxon> items = null;

if (((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon.Key)).Subtaxa.Count > 0)

items = ((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon.Key)).Subtaxa;

items.Add((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon.Key));

else

items.Add((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon.Key));

List<TaxonData> data = BinderTaxonDataResult(items);

if (data != null)

this.BindRepeater(data);

this.IsEmpty = (data.Count == 0);

protected override void BindRepeater(List<TaxonData> data)

this.TaxaRepeater.DataSource = data;

this.TaxaRepeater.ItemDataBound += base.TaxaRepeater_ItemDataBound;

this.TaxaRepeater.DataBind();

protected virtual List<TaxonData> BinderTaxonDataResult(IList<HierarchicalTaxon> items)

List<TaxonData> data = new List<TaxonData>();

foreach (HierarchicalTaxon t in items)

TaxonData d = new TaxonData();

d.Title = t.Title;

d.Url = t.UrlName;

d.Size = 1;

d.Count = 1;

data.Add(d);

if (data.Count > 0)

return data;

return null;

public static readonly string layoutTemplatePath =

ControlUtilities.ToVppPath("Telerik.Sitefinity.Resources.Templates.PublicControls.TaxonomyControl.ascx");

private Guid _rootTaxon;

Here is the way that this could be implemented in a user control or custom control that uses RadTreeView.

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<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="RadTreeCategoryControl.ascx.cs" Inherits="SitefinityWebApp.Controls.RadTreeCategoryControl" %>

<telerik:RadTreeView runat="server" ID="RadTreeView1"></telerik:RadTreeView>

Copy Code

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Telerik.Sitefinity.Taxonomies.Model;

using Telerik.Sitefinity.Taxonomies;

namespace SitefinityWebApp.Controls

public partial class RadTreeCategoryControl : System.Web.UI.UserControl

public string FieldName

get

return "Category";

public Guid TaxonomyId

get

return new Guid("e5cd6d69-1543-427b-ad62-688a99f5e7d4");

public Guid RootTaxon

get

return this._rootTaxon;

set

this._rootTaxon = value;

protected void Page_Load(object sender, EventArgs e)

var tManager = TaxonomyManager.GetManager();

ITaxonomy taxonomy = tManager.GetTaxonomy(TaxonomyId);

var singleTaxon = taxonomy.Taxa.Single(st => ((HierarchicalTaxon)st).Id == RootTaxon);

IList<HierarchicalTaxon> items = null;

if (((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon)).Subtaxa.Count > 0)

items = ((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon)).Subtaxa;

items.Add((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon));

else

items.Add((Telerik.Sitefinity.Taxonomies.Model.HierarchicalTaxon)(singleTaxon));

this.BindTree(items);

protected void BindTree(IList<HierarchicalTaxon> data)

this.RadTreeView1.DataSource = data;

this.RadTreeView1.NodeDataBound += new Telerik.Web.UI.RadTreeViewEventHandler(RadTreeView1_NodeDataBound);

this.RadTreeView1.DataBind();

void RadTreeView1_NodeDataBound(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)

var taxon = e.Node.DataItem as HierarchicalTaxon;

e.Node.Text = taxon.Title;

private Guid _rootTaxon;

You need to format the URL of the category so that it is

/-in-Category/Categories/ and after that goes the cateogry name

example
/-in-Category/Categories/rootcategory
/-in-Category/Categories/rootcategory/child1
/-in-Category/Categories/rootcategory/child1/nestedchild

Greetings,
Ivan Dimitrov
the Telerik team

Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

Posted by Community Admin on 24-Jun-2011 00:00

Thank you Ivan. Will this be implemented in a later release?

Posted by Community Admin on 24-Jun-2011 00:00

Hello Richard ,

I remember that there is a task about this, but it is currently not scheduled. Here you can find the PITS Issue: Public URL

Greetings,
Ivan Dimitrov
the Telerik team

Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

Posted by Community Admin on 24-Jun-2011 00:00

Ivan,
I did notice that they count is always 1 if you set the ShowItemCount. I believe this is due to this line:
d.Count = 1;

How would I get this to output the actual item count for each taxon?

Posted by Community Admin on 27-Jun-2011 00:00

Hi Richard,

You can use PrepareData method of the TaxonomyControl to do this, but in this case you should override it to split the taxons. Another option is using GetItemsByTaxon method of ContentDataProviderBase and count the result.

Regards,
Ivan Dimitrov
the Telerik team

Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items

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