2012/6/26 Gary Hockin
<[hidden email]>
Hello,
I understand that constructor options should now be using the Zend\Stdlib\Options class, I'm a little bit confused as how this should work.
Say I'm working on creating a Hello World class, and I've already defined the Options class as HelloWorldOptions, how do I pass default options in the constructor to HelloWorld? Do I pass as an array and HelloWorld then creates a HelloWorldOptions class from that array, or am I expected to pass a HelloWorldOptions class myself?
As far as I understand, you have two options:
1. Instantiate the options class yourself, pass it on to the constructor
2. Use an array of options, the constructor would instantiate the options class
It would look like this:
public function __construct($options = aray())
{
if (is_array($options)) {
$options = new HelloWorldOptions($options);
} elseif (!$options instanceof HelloWorldOptions) {
throw new InvalidArgumentException('Options parameter $options must be an array or instance of HelloWorldOptions');
}
$this->options = $options;
}
Now you can either:
$foo = new HelloWorld(array( ... ));
Or:
$options = new HelloWorldOptions(array(....));
$foo = new HelloWorld($options);
Or:
$options = new HelloWorldOptions;
$options->setBar($bar);
$foo = new HelloWorld($options);
Secondly, if I want to change an option at runtime, how is that handled? Does HelloWorld proxy it's HelloWorldOptions class so I can access the setter defined there in the format:
$helloWorld->options->setWorldName('earth');
Or should HelloWorld create it's own setters that allow me to change options. If the latter is true, should setWorldName exist in both HelloWorld and HelloWorldOptions?
I would not copy over all accessors and mutators from the options class to the functional class. That's just a waste of developing time and resources. You can create an options getter:
$helloWorld->options()->setFoo($bar);
I would suggest not to use a public property, as you could externally modify the options class (set it to a FooBar instance) and this will break the HelloWorld class. An options() or getOptions() method seems more appropriate.
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