69 lines
2.1 KiB
PHP
69 lines
2.1 KiB
PHP
|
<?php
|
||
|
|
namespace Rails\Traits;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Provides methods to access attributes that are ArrayObjects,
|
||
|
|
* that are accessed through a method that receives
|
||
|
|
* two arguments: key name and a value.
|
||
|
|
*
|
||
|
|
* Say you have an object with a protected property called $headers (that is
|
||
|
|
* an ArrayObject), you can do the following:
|
||
|
|
*
|
||
|
|
* $object->headers('foo', 'bar') : Sets $headers['foo'] = 'bar'.
|
||
|
|
* $object->headers('foo') : Returns the value of $headers['foo'], null if not set.
|
||
|
|
* $object->headers('foo', null) : Unsets $headers['foo'].
|
||
|
|
* $object->headers() : Returns $headers.
|
||
|
|
* $object->headers(['foo' => 'bar', 'baz' => true]) : Sets many values at once.
|
||
|
|
*
|
||
|
|
* The method to access the $headers property should look like this:
|
||
|
|
*
|
||
|
|
* public function headers()
|
||
|
|
* {
|
||
|
|
* return $this->_aoaccess('headers', func_get_args());
|
||
|
|
* }
|
||
|
|
*/
|
||
|
|
trait ArrayObjectAccess
|
||
|
|
{
|
||
|
|
private function _aoaccess($prop_name, $args)
|
||
|
|
{
|
||
|
|
$num_args = count($args);
|
||
|
|
|
||
|
|
if ($num_args == 1) {
|
||
|
|
$key = array_shift($args);
|
||
|
|
if (is_array($key)) {
|
||
|
|
foreach ($key as $prop => $val)
|
||
|
|
$this->_aoaccess_set($prop_name, $prop, $val);
|
||
|
|
return $this;
|
||
|
|
} elseif (isset($this->$prop_name[$key]))
|
||
|
|
return $this->$prop_name[$key];
|
||
|
|
else
|
||
|
|
return null;
|
||
|
|
} elseif ($num_args) {
|
||
|
|
list($key, $value) = $args;
|
||
|
|
$this->_aoaccess_set($prop_name, $key, $value);
|
||
|
|
return $this;
|
||
|
|
} else {
|
||
|
|
return $this->$prop_name;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helps automatize the creation of ArrayObjects.
|
||
|
|
* Expected to be called in the constructor.
|
||
|
|
*
|
||
|
|
* @param array $props : Names of the properties that are ArrayObjects.
|
||
|
|
*/
|
||
|
|
private function _aoaccess_init(array $props)
|
||
|
|
{
|
||
|
|
foreach ($props as $prop)
|
||
|
|
$this->$prop = new \ArrayObject();
|
||
|
|
}
|
||
|
|
|
||
|
|
private function _aoaccess_set($prop_name, $key, $value)
|
||
|
|
{
|
||
|
|
if ($value === null)
|
||
|
|
unset($this->$prop_name[$key]);
|
||
|
|
else
|
||
|
|
$this->$prop_name[$key] = $value;
|
||
|
|
}
|
||
|
|
}
|