[TYPO3-mvc] How to get first object of an 1:n relation

[Dmitri Pisarev]

Thanks Claus, I'll be warned.
My plugin just displays stuff - all the editing is in the backend.
If you are interested, it shall be the map of Russian holocaust - all of 
the places in which people were murdered during the soviet years:
http://www.psmb.ru/karta_pamjati (work in progress!)

Regards,
Dmitri.

22.06.2011 19:24, Claus Due пишет:
> Hi Dmitri,
>
> As always you're welcome :)
>
> You probably already know this, but there's a chance this can break unexpectedly if you have any piece of code anywhere, which does not consider the type of an 1:n member property (array / storage) and tries to call ->count() etc. on your $this->types list. This could break if you update an object in FE - better test for that if you intend to have save/update features :)
>
> -----
> Venlig hilsen / Kind regards,
>
> Claus Due
> World Class Extraterrestrial
> http://fedext.net/
>
> On Jun 22, 2011, at 5:16 PM, Dmitri Pisarev wrote:
>
>> Hey Claus,
>> you are, as always, correct!
>> The reason why this trick worked on images for me before is that I did explode on them and returned them as array.
>> I modified the getter, following your advice, to this and it works:
>> public function getTypes() {
>> 		return $this->types->toArray();
>> }
>>
>> Thank you!
>>
>> Dmitri.
>> 22.06.2011 15:11, Claus Due пишет:
>>> Hi Dmitri,
>>>
>>> ObjectStorage can be converted to array but cannot be accessed with numeric indexes like an array can. That's the reason why the .0 trick doesn't work on ObjectStorage.
>>>
>>> You can do this though:
>>>
>>> $images = $place->getImages()->toArray();
>>> $this->view->assign('images', $images);
>>>
>>> and then {images.0.filename} or whatever.
>>>
>>> If you are looping {places} in Fluid then your only option is a ViewHelper which can read the first item off of an ObjectStorage and re-assign as a template variable (or simply return, if you only use it inline).
>>>
>>> --
>>>
>>> Med venlig hilsen / Kind regards
>>>
>>> Claus Due
>>> Code Monkey
>>> --
>>> Wildside A/S
>>> Katrinebjergvej 113, DK-8200 Århus N
>>> tlf. 86 12 64 65
>>> http://www.wildside.dk
>>>
>>> On Jun 22, 2011, at 12:50 PM, Dmitri Pisarev wrote:
>>>
>>>> Hi!
>>>> Sorry for bringing up the old thread.
>>>> I stuck with the same problem - my code that used to work without problem is now broken. This used to work just fine: {place.images.0}
>>>> Now I had to add another getter to the Place model and use the {place.firstImage}
>>>>
>>>> What has gone wrong with the old approach?
>>>>
>>>> Regards,
>>>> Dmitri.
>>>> 14.04.2011 17:22, Franz Koch пишет:
>>>>> Hey,
>>>>>
>>>>>> i've got an 1:n relation called anhaenge.
>>>>>> How i get the first object of anhaenge in a fluid view?
>>>>>>
>>>>>> Is there a way like
>>>>>> {currentObject.anhaenge.first.propertyIlikeToDisplay} ?
>>>>>
>>>>> not yet. AFAIK there is a review from Felix pending that's implementing
>>>>> a "getFirst" method in objectStorages which should actually allow what
>>>>> you currently try.
>>>>>
>>>>> But until this is implemented I'd suggest to do one of the following:
>>>>>
>>>>> a) simply loop over the "anhaenge"
>>>>> b) add a method "getFirstAttachment" to your "currentObject"s domain
>>>>> model that's doing the work for you
>>>>> c) write a little viewHelper that's able to do what you need
>>>>>
>>>>> c) would be my favorite because it's most flexible and can be reused for
>>>>> other relations.
>>>>>
>>>>
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>>>
>>
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