bug #428 Improved search engine for numeric search queries (javieregu…

…iluz)

This PR was squashed before being merged into the master branch (closes #428).

Discussion
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Improved search engine for numeric search queries

This fixes #422.

Commits
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d662a9c Improved search engine for numeric search queries

Controller/AdminController.php

@@ -514,21 +514,27 @@ protected function findAll($entityClass, $page = 1, $maxPerPage = 15, $sortField
      */
     protected function findBy($entityClass, $searchQuery, array $searchableFields, $page = 1, $maxPerPage = 15)
     {
-        $dbIsPostgreSql = $this->isPostgreSqlUsedByEntity($entityClass);
+        $databaseIsPostgreSql = $this->isPostgreSqlUsedByEntity($entityClass);
         $queryBuilder = $this->em->createQueryBuilder()->select('entity')->from($entityClass, 'entity');
 
         $queryConditions = $queryBuilder->expr()->orX();
         $queryParameters = array();
         foreach ($searchableFields as $name => $metadata) {
-            // PostgreSQL doesn't allow to compare strings values with non-string columns (e.g. 'id')
-            if ($dbIsPostgreSql && !in_array($metadata['type'], array('text', 'string'))) {
-                continue;
-            }
-
-            if (in_array($metadata['dataType'], array('text', 'string'))) {
-                $queryConditions->add(sprintf('entity.%s LIKE :query', $name));
-                $queryParameters['query'] = '%'.$searchQuery.'%';
+            $isNumericField = in_array($metadata['dataType'], array('integer', 'number', 'smallint', 'bigint', 'decimal', 'float'));
+            $isTextField = in_array($metadata['dataType'], array('string', 'text', 'guid'));
+
+            if (is_numeric($searchQuery) && $isNumericField) {
+                $queryConditions->add(sprintf('entity.%s = :exact_query', $name));
+                $queryParameters['exact_query'] = 0 + $searchQuery; // adding '0' turns the string into a numeric value
+            } elseif ($isTextField) {
+                $queryConditions->add(sprintf('entity.%s LIKE :fuzzy_query', $name));
+                $queryParameters['fuzzy_query'] = '%'.$searchQuery.'%';
             } else {
+                // PostgreSQL doesn't allow to compare string values with non-string columns (e.g. 'id')
+                if ($databaseIsPostgreSql) {
+                    continue;
+                }
+
                 $queryConditions->add(sprintf('entity.%s IN (:words)', $name));
                 $queryParameters['words'] = explode(' ', $searchQuery);
             }