[TYPO3-dev] how to implement "no records found" with TS

[Martin Kutschker]

Peter Niederlag schrieb:
> Hi,
> 
> Martin Kutschker schrieb:
>> Hi!
>>
>> I tried to display a message if a CONTENT object didn't render any
>> records.  I didn't want to use a further SELECT (eg via stdWrap.numRows)
>> for performance reasons. I fiddled with cobj:parentRecordNumber with no
>> success.
>>
>> So I changed tlib_cObj:
>>
>> function getData($string,$fieldArray)    {
>> ...
> [...]
>> Is this possible (without any additional SELECT!) without this hack?
> 
> Well, you can use another TS-hack. ;)
> 
> page {
>     20 = COA
>     20 {
>       50 < styles.content.get
>       50.stdWrap.ifEmpty = <h2>testme</h2>
>       wrap = <div id="content">|</div>
>     }
> }
> 
> The only problem is that 'ifEmpty ' returns false if you have applied
> some wrap on the same TS-object. That's why you need that extra COA around.

Ah! Thanx to you and Joey. I hope I'm a better PHP coder than I'm a TS 
coder ;-)

>> If not, do you think 'currentRecordTotal' should be added to getData?
> 
> IMO this should go into a register, if its not there already, shouldn't it?

Basically yes. But tslib_cObj->getData() the method behind stdWrap.data 
has already access to $this->parentRecordNumber via 
cobj:parentRecordNumber so it was logical to give access to 
$this->currentRecordTotal via cobj:currentRecordTotal.

Both suggested TS setups are fine, but the hack has the additional 
benefit of delivering the total number of selected items.

Masi