Dynamic Multilist with Search

Recently, in my project, I had a requirement where, I had to show Products in a Carousel. The Content Editor would choose some Products for the Carousel from a “MultiList with Search” field in the Carousel item. The Products are stored in a Bucket. The “MultiList with Search” is very useful in this case because the Products can be search in the control and also, in the Carousel template for the Source of the “MultiList with Search” field, we can give a StartSearchLocation and Filters like below, so that Sitecore will search from that location and apply the filters.


The problem with my requirement was that, the Item Id or the path for the StartSearchLocation could be different for different website. The Products bucket for websites are located under the website node. So, I need a “Multilist with Search” , where the StartSearchLocation can change or in other words, I need to query to find the StartSearchLocation of the Products bucket for the website. Not too difficult to do this. Here is how I did it.

BucketList is the class I needed to extend. It is a FieldType and it is derived from SearchList. The Source property of the FieldTypes is what I had to change. This property is located in MultiListEx which is the parent class of SearchList. The StartSearchLocation now can contain query in addition to ItemId. If it contains the word ‘query:’ that means the StartSearchLocation ItemId has to be found from query. The following code is doing exactly that. If the word ‘query:’ is not present code assumes that StartSearchLocation contains the ItemId and just return the base.Source.

using Sitecore.Buckets.FieldTypes;
namespace Sitecore.SharedControls.Buckets.FieldTypes
    public class DynamicBucketList : BucketList
        public new string Source
            get { return base.Source; }
                if (value.Contains("query:"))
                    var sourceString = value;
                    var queryString = sourceString.Substring(sourceString.IndexOf("query:"),
                            ? sourceString.IndexOf('&') - sourceString.IndexOf("query:")
                            : sourceString.Length - sourceString.IndexOf("query:"));
                    //Find out the item from the query. The query should return only one item.
                    var contextItem = global::Sitecore.Context.ContentDatabase.Items[this.ItemID];
                    var queryItem = contextItem.Axes.SelectSingleItem(queryString.Substring("query:".Length));
                    base.Source = value.Replace(queryString, queryItem.ID.ToString());
                    base.Source = value;

After this I needed to create the new “Dynamic Multilist with Search” FieldType in core database like below.

Dynamic Multilist with Search

and added the following in a config file

<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/">
      <source patch:after="*[@namespace='Sitecore.Buckets.FieldTypes']" mode="on" namespace="Sitecore.SharedControls.Buckets.FieldTypes" assembly="Sitecore.SharedControls" prefix="contentExtension" />

Selected the Field Type like below in the Carousel Template. The StartSearchLocation was a query.
StartSearchLocation=query:./ancestor-or-self::*[@@templatename=’Website’]/Product Repository/Products


That’s it. Now, I can use a query to dynamically select the StartSearchLocation for the Multilist with Search.

About Himadri Chakrabarti

I am a solutions architect and a Sitecore MVP. I am focused on Sitecore and Ecommerce development. Opinions expressed in my blogs are my own.
This entry was posted in Commerce Connect, Sitecore and tagged , , , , . Bookmark the permalink.

1 Response to Dynamic Multilist with Search

  1. Pingback: Custom Multisite Multilist with Search Sitecore field | Tech Musingz

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