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Solr spellcheck

Caution

Solr spellcheck works only if you are using the eContent data provider.

Step 1: Configure Solr core

Make sure your Solr core is configured correctly. Restart Solr if you did any changes.

Look for the solrconfig.xml file inside your Solr core directory:

/solr/server/ez/template/solrconfig.xml

Add the following lines to the requestHandler named /select.

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<requestHandler name="/select" class="solr.SearchHandler">
<arr name="last-components">
  <str>spellcheck</str>
</arr>

Make sure you have also the following element in the XML file:

<searchComponent name="spellcheck" class="solr.SpellCheckComponent">

Additional definitions for spellcheck can be configured here, but spellcheck should also work with the default values.

Go to your root directory and execute the following commands:

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solr/bin/solr stop -all
solr/bin/solr start

Step 2: Enable spellcheck in configuration

Modify SearchBundle/Resources/config/econtent_search.yml:

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siso_search.default.solr_spellcheck: true

Step 3: Define search controller behavior

The search engine returns search collation and search term suggestions.

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return array(
    $catalogElements,
    $facetGroups,
    $productSearchResult->numFound,
    $productSearchResult->spellcheckCollation,
    $spellcheckCollationResults,
    $productSearchResult->spellcheckSuggestedTerms
);
$productSearchResult->spellcheckCollation (string) The collation text. This is the suggested phrase (should contain the complete phrase if the user searched for more than one term.
For example, if user searches for "blac spealer", the collation could be: "black speaker"
Collation has text only if it results are not 0.
$spellcheckCollationResults The number of hits of collation search.
$productSearchResult->spellcheckSuggestedTerms An array of suggested words and their hits.
Example: black => 99, spealer => 65. It is sorted by the number of hits, descending.

Step 4: Prepare template

The following Twig template displays these results:

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{% if spellcheckCollationResults is defined and spellcheckCollationResults > 0 %}
  <br/>{{ 'msg.did_you_mean'|st_translate }}
  <a href="{{ path('siso_global_search') }}?query={{ spellcheckCollation }}">{{ spellcheckCollation }}
    (
    {% transchoice spellcheckCollationResults with {'%count%' : spellcheckCollationResults} %}
    {0} No result|[2,Inf[ %count% results|{1} One result
    {% endtranschoice %}
    )
  </a>
{% endif %}
{% if spellcheckSuggestions is defined and spellcheckSuggestions|length > 0 %}
  <ul>{{ 'msg.suggested_words'|st_translate}}:
    {% for word, frequency in spellcheckSuggestions %}
      <li><a href="{{ path('siso_global_search') }}?query={{ word }}">{{ word }}: {{ frequency }}</a></li>
    {% endfor %}
  </ul>
{% endif %}
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