[TYPO3-mvc] How to transform objects to array

[Xavier Perseguers]

Hello Stefan,

Stefan Kruse wrote:
>> Your problem is not clear. You have objects, meaning you have an array
>> of objects and the foreach loop works but you cannot access properties
>> of your objects or the foreach loop itself does not work?
> 
> maybe i missunderstood you. I try to better explain. I get a result
> something like this:
> 
> object(Apache_Solr_Response)#999 (5) { 
> 	["_response":protected]=>
> object(Apache_Solr_HttpTransport_Response)#1000 (5) { 
> 	
> ["_statusCode":"Apache_Solr_HttpTransport_Response":private]=> int(200) 
> 	
> ["_statusMessage":"Apache_Solr_HttpTransport_Response":private]=> string(2)
> "OK" 
> [...]
> 
> And so on. When i now overgive this result on a forech loop to iterate
> through, I get the error message that the foreach only accepts arrays and
> objects which implemented IteratorInterface. That's why I need to transform
> my result to array. But maybe theres a better solution.

OK, we are getting closer to a description of what you try to achieve,
so you have a Apache_Solr_Response [1] that you pass over to your view
and but that is not clear what you try to iterate over. Looking at [1] I
guess you try to iterate over the result of the various getters:

- getHttpStatus()
- getHttpStatusMessage()
- getType()
- getEncoding()
- getRawResponse()

so basically, for Extbase being able to extract the info, you need to
iterate over properties

- httpStatus
- httpStatusMessage
- type
- encoding
- rawResponse

Something you may do like that:

<ul>
    <f:for each="{0:'httpStatus', 1:'httpStatusMessage', 2:'type',
3:'encoding', 4:'rawResponse'}" as="property">
        <li>{property} = {myApacheSolrResponse.{property}}</li>
    </f:for>
</ul>

But it won't work as {property} cannot be nested. You may write your own
ViewHelper

<my:fetchProperty object="{myApacheSolrResponse}" property="{property}"/>

Or write an class that add Iterator over properties. Something like that
(did not test):

class EntityIterator implements Countable, IteratorAggregate {

	protected $object = NULL;

	public function __construct($object) {
		$this->object = $object;
	}

	public function toArray() {
		static $fields = NULL;
		if ($fields === NULL) {
			$fields = array();
			$class = new ReflectionClass($this->object);
			$properties = array_keys($class->getDefaultProperties());

			foreach ($properties as $property) {
				$p = $class->getProperty($property);
				$p->setAccessible(TRUE);

				$value = $p->getValue($this->object);
				if (!is_object($value)) {
					$fields[$property] = $value;
				}
			}
		}
		return $fields;
	}

	public function getIterator() {
		return new ArrayIterator($this->toArray());
	}

	public function count() {
		return count($this->getIterator());
	}

}

(note: in general you should try to access corresponding getter instead
of reading the property)

and then encapsulate your Solr response in it:

$myResponse = new EntityIterator($mySolrResponse);
$this->view->assign('response', $myResponse);

and in your view:

<ul>
    <f:for each="{response}" key="property" value="value">
        <li>{property} = {value}</li>
    </f:for>
</ul>

should now work.

HTH

[1]
http://code.google.com/p/solr-php-client/source/browse/trunk/Apache/Solr/Response.php?r=54

-- 
Xavier Perseguers
Release Manager TYPO3 4.6

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