[TYPO3-mvc] Problems on double use of a object in two different objectStorage

[Franz Koch]

Hey,

> in my helper class i make a clone from the current object now like this:
>
> 	/**
> 	 * Find a selected Object in a object array by a given uid for forms
> 	 * @param array	$arr The Object array
> 	 * @param int $uid The uid
> 	 * @return array $arr The updated array
> 	 */
> 	Public Function  findSelectedObjectinArrayByUid($arr,$uid){
> 		if(is_array($arr)){
> 			$i=0;
> 			foreach ($arr as $obj) {
> 				if($obj->getUid()==$uid) {
> 					$arr[$i] = clone $obj;
> 					$arr[$i]->setFormselected("selected='selected'");
> 				}
> 				$i++;
> 			}
> 		}
> 		return $arr;
> 	}
>
> On  the clone in filled up the property. That resolve my problem. But is
> this right way?

as long as you don't need persistence for your stations/objects, you 
should always clone them in order to cut the connection to the 
persistence layer - otherwise changes made to these objects will 
automatically be stored in the DB (as long as the modified properties 
relate to TCA columns). While this might work for you now, the way you 
deal with the form seems in general wrong to me from an OOP point of view.

You have to render a form - right? Then you might need a formObject 
that's reflecting the possible formFields and also takes care of 
validation by setting according annotations for it's properties.
You pass this formObject to the Fluid formViewHelper and assign the 
according properties to your formFields. Extbase is doing all the magic 
of mapping the values of the form fields to the formObject automatically 
then. It also does automatically know which station is selected, as this 
is stored inside the formObject and does not have to be stored in the 
stationObject.
You could also store the form values inside a custom array instead of a 
object and use it's values to see which fields are selected - this 
should work too up to a certain degree. But using a object is the 
recommended way in your case I think.

If you need multiStepForms, there are some solutions/concepts available 
on this list.

-- 
kind regards,
Franz Koch