Last and first selectors (in repeaters) ?

[Pierre-Luc]

Is there something like that available in PW ? I need to filter something in a repeater by its last value.

Something like that: 

repeater.last.field

repeater.first.field

[Philipp]

The repeater is basically a PageArray. So you can use the normal Page/WireArray methods.

$myRepeater->first();

$myRepeater->last();

Look at the Cheatsheet under Page/WireArray. Hope this helps.

Sorry read it to fast.

But it's a PageArray and regarding to the documentation this might work:

$myRepeater->last()->find("myRepeater.fieldname != '' ").

Hopefully someone else can help.

[Pierre-Luc]

After a bit of testing it seems that it takes into account all the values in the repeater (which is ok for my use). But I'd still like to know if it's possible to use selectors that way.

[Wanze]

Don't understand the question exactly, but here are some nice docs: http://processwire.com/api/fieldtypes/repeaters/

Also repeater pages have a special template called "repeater_yourField". So theoretically you could also get repeater pages the following way:

// Get last item sorted by created DESC
$item = $pages->find("template=repeater_yourField,sort=-created,limit=1"); 

// Get first item sorted by created with an additional condition 
$item = $pages->find("template=repeater_yourField,sort=created,field|field2%=blub,limit=1"); 

[Can]

would love that too, could use it on a table field to know while searching if the first/last entry matches

[Robin S]

3 hours ago, Can said:

would love that too, could use it on a table field to know while searching if the first/last entry matches

It requires a couple of steps, but so long as your pages selector doesn't return a huge number of results this should be fairly low impact:

$value = 'Foo';
$all_matches = $pages->find("my_table.my_field=$value");
$first_row_matches = $pages->newPageArray();
foreach($all_matches as $match) {
    if($match->my_table->first()->my_field == $value) $first_row_matches->add($match);
}

 

[Can]

interesting approach thanks for sharing

think the first subselector could be a nice addition to simplify things ;-)