Filters a copy of the items in the collection.
| public find ( callback $filter, array $options = [] ) : mixed | ||
| $filter | callback | Callback to use for filtering. |
| $options | array | The available options are: - `'collect'`: If `true`, the results will be returned wrapped in a new `Collection` object or subclass. Defaults to `true`. |
| Результат | mixed | The filtered items. Will be an array unless `'collect'` is defined in the `$options` argument, then an instance of this class will be returned. |
/**
* Tests that the `find()` method properly filters items out of the resulting collection.
*
* @return void
*/
public function testCollectionFindFilter()
{
$collection = new Collection(array('data' => array_merge(array_fill(0, 10, 1), array_fill(0, 10, 2))));
$this->assertEqual(20, count($collection->to('array')));
$filter = function ($item) {
return $item == 1;
};
$result = $collection->find($filter);
$this->assertTrue($result instanceof Collection);
$this->assertEqual(array_fill(0, 10, 1), $result->to('array'));
$result = $collection->find($filter, array('collect' => false));
$this->assertEqual(array_fill(0, 10, 1), $result);
}
/**
* Tests that the `find()` method properly filters items out of the resulting collection.
*/
public function testCollectionFindFilter()
{
$collection = new Collection(array('data' => array_merge(array_fill(0, 10, 1), array_fill(0, 10, 2))));
$this->assertCount(20, $collection->to('array'));
$filter = function ($item) {
return $item === 1;
};
$result = $collection->find($filter);
$this->assertInstanceOf('lithium\\util\\Collection', $result);
$this->assertEqual(array_fill(0, 10, 1), $result->to('array'));
$result = $collection->find($filter, array('collect' => false));
$this->assertEqual(array_fill(0, 10, 1), $result);
}
/**
* Overrides parent `find()` implementation to enable key/value-based filtering of entity
* objects contained in this collection.
*
* @param mixed $filter Callback to use for filtering, or array of key/value pairs which entity
* properties will be matched against.
* @param array $options Options to modify the behavior of this method. See the documentation
* for the `$options` parameter of `lithium\util\Collection::find()`.
* @return mixed The filtered items. Will be an array unless `'collect'` is defined in the
* `$options` argument, then an instance of this class will be returned.
*/
public function find($filter, array $options = array())
{
$this->offsetGet(null);
if (is_array($filter)) {
$filter = $this->_filterFromArray($filter);
}
return parent::find($filter, $options);
}
/**
* Gets an array of classes and their corresponding definition files, or examines a file and
* returns the classes it defines.
*
* @param array $options
* @return array Associative of classes and their corresponding definition files
* @todo Document valid options
*/
public static function classes($options = array())
{
$defaults = array('group' => 'classes', 'file' => null);
$options += $defaults;
$list = get_declared_classes();
$classes = array();
if (!empty($options['file'])) {
$loaded = new Collection(array('items' => array_map(function ($class) {
return new ReflectionClass($class);
}, $list)));
if (!in_array($options['file'], $loaded->getFileName())) {
include $options['file'];
$list = array_diff(get_declared_classes(), $list);
} else {
$file = $options['file'];
$filter = function ($class) use($file) {
return $class->getFileName() == $file;
};
$list = $loaded->find($filter)->getName();
}
}
foreach ($list as $class) {
$inspector = new ReflectionClass($class);
if ($options['group'] == 'classes') {
$inspector->getFileName() ? $classes[$class] = $inspector->getFileName() : null;
} elseif ($options['group'] == 'files') {
$classes[$inspector->getFileName()][] = $inspector;
}
}
return $classes;
}