Convert value to selected in SelectBox.

Having consistency between checkbox, select, and radio is more important
than keeping the code stable at this point.

src/View/Input/SelectBox.php

@@ -51,7 +51,7 @@ class SelectBox {
  * - `options` - An array of options.
  * - `disabled` - Either true or an array of options to disable.
  *    When true, the select element will be disabled.
- * - `value` - Either a string or an array of options to mark as selected.
+ * - `selected` - Either a string or an array of options to mark as selected.
  * - `empty` - Set to true to add an empty option at the top of the
  *   option elements. Set to a string to define the display value of the
  *   empty option.
@@ -121,7 +121,7 @@ class SelectBox {
 			'escape' => true,
 			'options' => [],
 			'disabled' => null,
-			'value' => null,
+			'selected' => null,
 		];
 
 		if (empty($data['name'])) {
@@ -129,7 +129,7 @@ class SelectBox {
 		}
 		$options = $this->_renderContent($data);
 		$name = $data['name'];
-		unset($data['name'], $data['options'], $data['empty'], $data['value'], $data['escape']);
+		unset($data['name'], $data['options'], $data['empty'], $data['selected'], $data['escape']);
 		if (isset($data['disabled']) && is_array($data['disabled'])) {
 			unset($data['disabled']);
 		}
@@ -168,7 +168,7 @@ class SelectBox {
 			return [];
 		}
 
-		$selected = isset($data['value']) ? $data['value'] : null;
+		$selected = isset($data['selected']) ? $data['selected'] : null;
 		$disabled = null;
 		if (isset($data['disabled']) && is_array($data['disabled'])) {
 			$disabled = $data['disabled'];

tests/TestCase/View/Input/SelectBoxTest.php

@@ -141,7 +141,7 @@ class SelectBoxTest extends TestCase {
 		$data = [
 			'id' => 'BirdName',
 			'name' => 'Birds[name]',
-			'value' => '1',
+			'selected' => '1',
 			'options' => [
 				1 => 'one',
 				'1x' => 'one x',
@@ -160,7 +160,7 @@ class SelectBoxTest extends TestCase {
 		];
 		$this->assertTags($result, $expected);
 
-		$data['value'] = 2;
+		$data['selected'] = 2;
 		$result = $select->render($data);
 		$expected = [
 			'select' => ['name' => 'Birds[name]', 'id' => 'BirdName'],
@@ -211,7 +211,7 @@ class SelectBoxTest extends TestCase {
 			'multiple' => true,
 			'id' => 'BirdName',
 			'name' => 'Birds[name]',
-			'value' => ['1', '2', 'burp'],
+			'selected' => ['1', '2', 'burp'],
 			'options' => [
 				1 => 'one',
 				'1x' => 'one x',
@@ -373,7 +373,7 @@ class SelectBoxTest extends TestCase {
 		$select = new SelectBox($this->templates);
 		$data = [
 			'name' => 'Birds[name]',
-			'value' => ['1', '2', 'burp'],
+			'selected' => ['1', '2', 'burp'],
 			'disabled' => ['1x', '2x', 'nope'],
 			'options' => [
 				'ones' => [
@@ -416,7 +416,7 @@ class SelectBoxTest extends TestCase {
 			'disabled' => true,
 			'name' => 'Birds[name]',
 			'options' => ['a' => 'Albatross', 'b' => 'Budgie'],
-			'value' => 'a',
+			'selected' => 'a',
 		];
 		$result = $select->render($data);
 		$expected = [
@@ -440,7 +440,7 @@ class SelectBoxTest extends TestCase {
 		$select = new SelectBox($this->templates);
 		$data = [
 			'disabled' => ['a', 'c'],
-			'value' => 'a',
+			'selected' => 'a',
 			'name' => 'Birds[name]',
 			'options' => [
 				'a' => 'Albatross',
@@ -502,7 +502,7 @@ class SelectBoxTest extends TestCase {
 		$this->assertTags($result, $expected);
 
 		$data['empty'] = 'empty';
-		$data['value'] = '';
+		$data['selected'] = '';
 		$result = $select->render($data);
 		$expected = [
 			'select' => ['name' => 'Birds[name]', 'id' => 'BirdName'],
@@ -513,7 +513,7 @@ class SelectBoxTest extends TestCase {
 		];
 		$this->assertTags($result, $expected);
 
-		$data['value'] = false;
+		$data['selected'] = false;
 		$result = $select->render($data);
 		$this->assertTags($result, $expected);
 	}