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Solr Auto Suggester With Sitecore

Solr Auto Suggester With Sitecore

What is a Solr Suggester?

The Solr suggester component provides automatic suggestions to users, just like Google provides suggestions. Solr has a suggester component which is called SuggestComponent. More detail is available here

solr search suggester

Configuration the SuggesterComponent

Navigate to this location “SolrFolder\server\solr\configsets\INDEXNAME \conf” and open “solrconfig.xml”. Search below comment in “solrconfig.xml” file.

 <!-- SearchHandler  
     For processing Search Queries, the primary Request Handler  
     provided with Solr is "SearchHandler" It delegates to a sequent  
     of SearchComponents (see below) and supports distributed  
     queries across multiple shards  
and paste the below code:
 <searchComponent name="suggest" class="solr.SuggestComponent">   
   <lst name="suggester">  
   <str name="name">contentSuggester</str>  
   <str name="lookupImpl">AnalyzingInfixLookupFactory</str>  
   <str name="dictionaryImpl">DocumentDictionaryFactory</str>  
   <str name="field">title_t</str>  
   <str name="contextField">_template</str>   
   <str name="suggestAnalyzerFieldType">text_general</str>  
   <str name="buildOnStartup">false</str>  
      <str name="highlight">false</str>  

Adding the Suggest Request Handler

 <requestHandler name="/suggest" class="solr.SearchHandler" startup="lazy">  
  <lst name="defaults">  
   <str name="suggest">true</str>  
   <str name="suggest.count">10</str>  
       <str name="suggest.dictionary">contentSuggester</str>  
  <arr name="components">  
After this do not forget to reload Solr. 

To test Solr search suggester please follow the below steps:
  • Go to Solr console.
  • Select Core from “Core Selector”.
  • Click on Query.
  • Now type “/suggest” in Request-Handler(qt) .
  • And type keyword in “q” which you want to search, in my case I am searching “sitecore” keyword.
  • At last click on the “Execute Query” button.
  • Now you can see results in which “sitecore” keyword is matched in the “_name” field.
solr seach suggester

If you want to filter value on basis of “contextField” which is a “_template” in my case then you can pass value in “suggest.cfq” just like this:


Create Helper class

  • Add reference of below DLLs:
    • SolrNet.dll
    • Sitecore.ContentSearch.dll
    • Sitecore.ContentSearch.SolrProvider.dll
    • Sitecore.ContentSearch.SolrNetExtension.dll 
  • Import the following namespaces:
    • System.Collections.Generic
    • System.Linq
    • Sitecore.ContentSearch
    • Sitecore.ContentSearch.SolrNetExtension
    • Sitecore.ContentSearch.SolrProvider.SolrNetIntegration
Write below code, it will return a list of string:

 public IEnumerable<string> GetSearchSuggestion(string searchTerm,string templateId)  
   using (var ctx = ContentSearchManager.GetIndex("sc101_custom_master_index").CreateSearchContext())  
     SolrSuggestQuery q = searchTerm;      
     var options = new SuggestHandlerQueryOptions  
       Parameters = new SuggestParameters  
         Count = 10,  
         Build = true,  
                     ContextFilterQuery = templateId  
     var result = ctx.Suggest(q, options);  
     return result.Suggestions["contentSuggester"].Suggestions.Select(a => a.Term);  


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