Before rendering facets notification

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Thomas Larsen

Posted on 18/08/2016 23:51:17

Is there a notification before facets, from the repository index, are rendered on the product list.

Where I can change the sorting, remove facets etc.?

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Nicolai Høeg Pedersen

Posted on 19/08/2016 00:43:19

The easiest is to do it in the template in Razor.

You have this notification that can also be used: Notifications.eCommerce.Querying.AfterQuery

Its arguments contains a property with the result (Dynamicweb.Querying.IQueryResult)

Thomas Larsen

Posted on 19/08/2016 09:06:18

I would like to use the AfterQuery notification.

But the FacetGroupResult do not allow me to change the sorting on the facets or removing facets, because the facetResult is private. The only thing that I can do is adding facets with the AddFacetResult method?

Nicolai Høeg Pedersen

Posted on 19/08/2016 09:31:04

Hi Thomas

There should be nothing private...

Here is a simple sample of accessing the information:

using System.Collections.Generic;

//Add reference to Dynamicweb.Querying and Dynamicweb.Indexing.Lucene

namespace Dynamicweb.Examples.CSharp.eCommerce
{
   [Dynamicweb.Extensibility.Subscribe(Dynamicweb.Notifications.eCommerce.Querying.AfterQuery)]
   public class FacetChangeObserver : Dynamicweb.Extensibility.NotificationSubscriber
   {
       public override void OnNotify(string notification, Dynamicweb.Extensibility.NotificationArgs args)
       {
           Dynamicweb.Notifications.eCommerce.Querying.AfterQueryArgs myArgs = args as Dynamicweb.Notifications.eCommerce.Querying.AfterQueryArgs;

Dynamicweb.Indexing.Lucene.LuceneQueryResult result = (Dynamicweb.Indexing.Lucene.LuceneQueryResult)myArgs.Result;

           Dictionary<string, Querying.Facetting.FacetGroupResult> facets = new Dictionary<string, Querying.Facetting.FacetGroupResult>();
           foreach (Querying.Facetting.IFacetGroup facetGroup in myArgs.Settings.Facets)//Loop the facets, i.e. Color, Variants etc.
           {
               foreach(var something in facetGroup.Items)//Loop the items in the facet group
               {
                   //Do magic here...
               }
           }

           myArgs.Result = result;
       }
   }
}

But it is not that simple.

In the attached code file (yes, it is VB), you can check out HandleFacetGroupResult method for how we handle the facets.

Also, it would be awesome if you post the result of your efforts so we can add it to the examples.

Thanks, Nicolai

Frontend.zip

Thomas Larsen

Posted on 19/08/2016 13:37:35

This post has been marked as an answer

Hi Nicolai,

I endend up using the BeforeQuery notification instead

[Dynamicweb.Extensibility.Subscribe(Dynamicweb.Notifications.eCommerce.Querying.BeforeQuery)]
public class BeforeQuery : Dynamicweb.Extensibility.NotificationSubscriber
{
public override void OnNotify(string notification, Dynamicweb.Extensibility.NotificationArgs args)
{

Dynamicweb.Notifications.eCommerce.Querying.BeforeQueryArgs beforeQueryArgs = (Dynamicweb.Notifications.eCommerce.Querying.BeforeQueryArgs)args;

//Only apply on filter facet group
var filterFacetGroup = beforeQueryArgs.Settings.Facets.FirstOrDefault(fg => fg.Name == "FilterFacet.facets");

if (filterFacetGroup == null || filterFacetGroup.Items.Count() == 0)
return;

var groupFacets = new Dictionary<string, int>();
groupFacets.Add("Filter_100", 1); //Filter_100, sorting 1
groupFacets.Add("Filter_90", 2); //Filter_90, sorting 2
groupFacets.Add("Filter_120", 3); //Filter_120, sorting 3

var groupVisiblefacetsSorted = (from facets in filterFacetGroup.Items
join groupfacets in groupFacets
on facets.Name equals groupfacets.Key
orderby groupfacets.Value ascending
select facets).ToList();

filterFacetGroup.Items = groupVisiblefacetsSorted;

}
}

Votes for this answer: 1

Nicolai Høeg Pedersen

Posted on 19/08/2016 14:19:58

Hi Thomas

Nice! Thanks for sharing.

Have a nice weekend, Nicolai

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Before rendering facets notification

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