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

[Claus Due]

Looks good but wish I could understand it. I used to host a holocaust-info website for a friend so I sympathize a lot with the purpose. Best of luck to you!

-----
Venlig hilsen / Kind regards,

Claus Due
Senior Proctometrist
http://fedext.net/

On Jun 22, 2011, at 5:44 PM, Dmitri Pisarev wrote:

> 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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> 
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