#21 update phpdoc

Author: itosho

src/Model/Behavior/InsertBehavior.php

@@ -78,11 +78,6 @@ public function insertOnce(Entity $entity, array $conditions = null)
             $insertData['modified'] = FrozenTime::now()->toDateTimeString();
         }
 
-        $escape = function ($content) {
-            return is_null($content) ? 'NULL' : $content;
-        };
-
-        $escapedInsertData = array_map($escape, $insertData);
         $fields = array_keys($insertData);
         $existsConditions = $conditions;
         if (is_null($existsConditions)) {
@@ -94,7 +89,7 @@ public function insertOnce(Entity $entity, array $conditions = null)
             ->insert($fields)
             ->epilog(
                 $this
-                    ->buildTmpTableSelectQuery($escapedInsertData)
+                    ->buildTmpTableSelectQuery($insertData)
                     ->where(function (QueryExpression $exp) use ($existsConditions) {
                         $query = $this->_table
                             ->find()
@@ -111,21 +106,21 @@ public function insertOnce(Entity $entity, array $conditions = null)
     /**
      * build tmp table's select query for insert select query
      *
-     * @param array $escapedData escaped array data
+     * @param array $insertData insert data
      * @throws LogicException select query is invalid
      * @return Query tmp table's select query
      */
-    private function buildTmpTableSelectQuery($escapedData)
+    private function buildTmpTableSelectQuery($insertData)
     {
         $driver = $this->_table
             ->getConnection()
             ->getDriver();
         $schema = [];
         $binds = [];
-        foreach ($escapedData as $key => $value) {
+        foreach ($insertData as $key => $value) {
             $col = $driver->quoteIdentifier($key);
-            if ($value === 'NULL') {
-                $schema[] = "{$value} AS {$col}";
+            if (is_null($value)) {
+                $schema[] = "NULL AS {$col}";
             } else {
                 $bindKey = ':' . strtolower(trim($key));
                 $binds[$bindKey] = $value;
@@ -138,7 +133,7 @@ private function buildTmpTableSelectQuery($escapedData)
         ]);
         $query = $tmpTable
             ->find()
-            ->select(array_keys($escapedData))
+            ->select(array_keys($insertData))
             ->from(
                 sprintf('(SELECT %s) as tmp', implode(',', $schema))
             );