Reverse Name search using Kanavan Autosearch in Magento 1.7 - magento

Question

I am using karavan autosearch extention for magento1.7. and I want to modify the searching technique. In that search technique if we provide a full or partial name, the search engine works perfectly. but I want it works for reverse name. I mean If the exact name is 'test product', then if I use 'product test', that result will show same product in dropdown product list, what is now became empty. I have debug it and found that this search engine also using magento default search technique.
Any kind of Idea is acceptable.Please help me..
Thanks in advance..

Answer 1

Karavan extension uses default Magento search Model as backbone
app\code\local\Mage\CatalogSearch\Model\Resource\Search\collection.php
Find method _getSearchEntityIdsSql() and change there as u required.
$words = array();
if(str_word_count($this->_searchQuery)>1){
$words = explode(" ",$this->_searchQuery);
}
$ifValueId = $this->getConnection()->getCheckSql('t2.value_id > 0', 't2.value', 't1.value');
foreach ($tables as $table => $attributeIds) {
foreach($words as $word){
$selects[] = $this->getConnection()->select()
->from(array('t1' => $table), 'entity_id')
->joinLeft(
array('t2' => $table),
$this->getConnection()->quoteInto(
't1.entity_id = t2.entity_id AND t1.attribute_id = t2.attribute_id AND t2.store_id = ?',
$this->getStoreId()),
array()
)
->where('t1.attribute_id IN (?)', $attributeIds)
->where('t1.store_id = ?', 0)
->where($resHelper->getCILike($ifValueId, $word, $likeOptions));
}
if ($selects) {
$likeCond = '(' . join(' and ', $selects) . ')';
}
}
Some what like this.
Note: DOnt overwrite BAse Class