[DBAL-457] Allow to change PostgreSQL platform behvaior with regard to booleans.

docs/en/reference/configuration.rst

@@ -119,6 +119,11 @@ pdo\_pgsql
 -  ``port`` (integer): Port of the database to connect to.
 -  ``dbname`` (string): Name of the database/schema to connect to.
 
+PostgreSQL behaves differently with regard to booleans when you use
+``PDO::ATTR_EMULATE_PREPARES`` or not. To switch from using ``'true'``
+and ``'false'`` as strings you can change to integers by using:
+``$conn->getDatabasePlatform()->setUseBooleanTrueFalseStrings($flag)``.
+
 pdo\_oci / oci8
 ^^^^^^^^^^^^^^^
 
@@ -159,5 +164,3 @@ Custom Driver Options
 The ``driverOptions`` option allows to pass arbitrary options
 through to the driver. This is equivalent to the fourth argument of
 the `PDO constructor <http://php.net/manual/en/pdo.construct.php>`_.
-
-

lib/Doctrine/DBAL/Platforms/PostgreSqlPlatform.php

@@ -33,6 +33,24 @@ use Doctrine\DBAL\Schema\TableDiff,
  */
 class PostgreSqlPlatform extends AbstractPlatform
 {
+    /**
+     * @var bool
+     */
+    private $useBooleanTrueFalseStrings = true;
+
+    /**
+     * PostgreSQL has different behavior with some drivers
+     * with regard to how booleans have to be handled.
+     *
+     * Enables use of 'true'/'false' or otherwise 1 and 0 instead.
+     *
+     * @param bool $flag
+     */
+    public function setUseBooleanTrueFalseStrings($flag)
+    {
+        $this->useBooleanTrueFalseStrings = (bool)$flag;
+    }
+
     /**
      * {@inheritDoc}
      */
@@ -522,6 +540,10 @@ class PostgreSqlPlatform extends AbstractPlatform
      */
     public function convertBooleans($item)
     {
+        if ( ! $this->useBooleanTrueFalseStrings) {
+            return parent::convertBooleans($item);
+        }
+
         if (is_array($item)) {
             foreach ($item as $key => $value) {
                 if (is_bool($value) || is_numeric($item)) {

tests/Doctrine/Tests/DBAL/Platforms/PostgreSqlPlatformTest.php

@@ -280,4 +280,28 @@ class PostgreSqlPlatformTest extends AbstractPlatformTestCase
             'CREATE INDEX IDX_22660D028A90ABA9 ON "quoted" ("key")',
         );
     }
+
+    /**
+     * @group DBAL-457
+     */
+    public function testConvertBooleanAsStrings()
+    {
+        $platform = $this->createPlatform();
+
+        $this->assertEquals('true', $platform->convertBooleans(true));
+        $this->assertEquals('false', $platform->convertBooleans(false));
+    }
+
+    /**
+     * @group DBAL-457
+     */
+    public function testConvertBooleanAsIntegers()
+    {
+        $platform = $this->createPlatform();
+        $platform->setUseBooleanTrueFalseStrings(false);
+
+        $this->assertEquals('1', $platform->convertBooleans(true));
+        $this->assertEquals('0', $platform->convertBooleans(false));
+    }
 }
+