Implemented map view helper

lib/mwlib/src/MW/View/Helper/Map/Iface.php

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+<?php
+
+/**
+ * @license LGPLv3, http://opensource.org/licenses/LGPL-3.0
+ * @copyright Aimeos (aimeos.org), 2019
+ * @package MW
+ * @subpackage View
+ */
+
+
+namespace Aimeos\MW\View\Helper\Map;
+
+
+/**
+ * View helper class for mapping arrays/objects
+ *
+ * @package MW
+ * @subpackage View
+ */
+interface Iface extends \Aimeos\MW\View\Helper\Iface
+{
+	/**
+	 * Returns the mapped array
+	 *
+	 * @param iterable $cfgkey List of arrays of object that should be mapped
+	 * @param string $key Name of the property whose value should be the key of the mapped pairs
+	 * @param string $prop Property name or names that should be mapped to the key
+	 * @return \Aimeos\MW\MapIface Associative list of key/value pairs
+	 */
+	public function transform( iterable $list, string $key, string $prop ) : \Aimeos\MW\MapIface;
+}

lib/mwlib/src/MW/View/Helper/Map/Standard.php

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+<?php
+
+/**
+ * @license LGPLv3, http://opensource.org/licenses/LGPL-3.0
+ * @copyright Aimeos (aimeos.org), 2019
+ * @package MW
+ * @subpackage View
+ */
+
+
+namespace Aimeos\MW\View\Helper\Map;
+
+
+/**
+ * View helper class for mapping arrays/objects
+ *
+ * @package MW
+ * @subpackage View
+ */
+class Standard implements Iface
+{
+	/**
+	 * Returns the mapped array
+	 *
+	 * @param iterable $cfgkey List of arrays of object that should be mapped
+	 * @param array $key Name of the property whose value should be the key of the mapped pairs
+	 * @param string $prop Property name that should be mapped to the key
+	 * @return \Aimeos\MW\MapIface Associative list of key/value pairs
+	 */
+	public function transform( iterable $list, string $key, string $prop ) : \Aimeos\MW\MapIface
+	{
+		$result = [];
+
+		foreach( $list as $entry )
+		{
+			if( is_object( $entry ) && method_exists( $entry, 'toArray' ) ) {
+				$entry = $entry->toArray();
+			}
+
+			if( array_key_exists( $key, $entry ) && array_key_exists( $prop, $entry ) ) {
+				$result[$entry[$key]] = $entry[$prop];
+			}
+		}
+
+		return \Aimeos\MW\Map::from( $result );
+	}
+}

lib/mwlib/tests/MW/View/Helper/Map/StandardTest.php

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+<?php
+
+/**
+ * @license LGPLv3, http://opensource.org/licenses/LGPL-3.0
+ * @copyright Aimeos (aimeos.org), 2019
+ */
+
+
+namespace Aimeos\MW\View\Helper\Map;
+
+
+class StandardTest extends \PHPUnit\Framework\TestCase
+{
+	private $object;
+
+
+	protected function setUp()
+	{
+		$this->object = new \Aimeos\MW\View\Helper\Map\Standard( new \Aimeos\MW\View\Standard() );
+	}
+
+
+	protected function tearDown()
+	{
+		unset( $this->object );
+	}
+
+
+	public function testTransform()
+	{
+		$list = [['test1' => 'value1', 'test2' => 'value2']];
+		$this->assertEquals( ['value1' => 'value2'], $this->object->transform( $list, 'test1', 'test2' )->toArray() );
+	}
+
+
+	public function testTransformMap()
+	{
+		$list = \Aimeos\MW\Map::from( [['test1' => 'value1', 'test2' => 'value2']] );
+		$this->assertEquals( ['value1' => 'value2'], $this->object->transform( $list, 'test1', 'test2' )->toArray() );
+	}
+}