Making DboSource::fetchAll return $this->_result if it is a boolean a…

…nd $out is empty. Allows for Model::query() to return boolean values for operations that do not return recordsets. Fixes #6404

cake/libs/model/datasources/dbo_source.php

@@ -383,8 +383,10 @@ function fetchAll($sql, $cache = true, $modelName = null) {
 					$this->_queryCache[$sql] = $out;
 				}
 			}
+			if (empty($out) && is_bool($this->_result)) {
+				return $this->_result;
+			}
 			return $out;
-
 		} else {
 			return false;
 		}

cake/tests/cases/libs/model/datasources/dbo_source.test.php

@@ -4047,6 +4047,23 @@ function testExecute() {
 		$this->assertNotNull($this->db->took, 'Stats were not set %s');
 		$this->assertNotNull($this->db->affected, 'Stats were not set %s');
 	}
+
+/**
+ * test that query() returns boolean values from operations like CREATE TABLE
+ *
+ * @return void
+ **/
+	function testFetchAllBooleanReturns() {
+		$name = $this->db->fullTableName('test_query');
+		$query = "CREATE TABLE {$name} (name varchar(10));";
+		$result = $this->db->query($query);
+		$this->assertTrue($result, 'Query did not return a boolean. %s');
+
+		$query = "DROP TABLE {$name};";
+		$result = $this->db->fetchAll($query);
+		$this->assertTrue($result, 'Query did not return a boolean. %s');
+	}
+
 /**
  * test ShowQuery generation of regular and error messages
  *