Silverstripe 3 template loops functions and nested loops -

good morning,

i've been struggling silverstripe, , it's template parsing regards nested loops , functions within loops while now, it's becoming maddening.

if can alternate solution besides ajax (it must pure php/html/ss), acceptable, thanks.

[situation]
have 2 data objects: objecta [has_many objectb], , objectb [has_one objecta].
i've implemented tab-pane using css-bootstrap, , display these 2 objects linked in respective tabs.

example:
objecta_car mapped [objectb_process1, objectb_process2]
objecta_plane mapped [objectb_process3, objectb_process4]

scenario 1:
please see sample pseudo code below:

///>sample.ss snippet <% loop objecta_datalist %>     <div class="tab-pane">         <h3>$objecta_datalist.title</h3> <!-- prints objecta title -->         <hr />         <h4>$objecta_datalist.description</h4> <!-- prints objecta description -->         debug: $pos <!-- prints objecta loop count/index -->          <!-- problem starts here -->             <% loop objectb_datalist %>              debug: objecta count: $top.pos <!-- prints 1, regardless -->              debug: objecta count2: $up.pos <!-- same issue above -->              debug: $pos <!-- due scope, prints objectb loop count/index -->         <% end_loop %>     </div> <!--//#tab-pane--> <% end_loop %>    

my aim in above example was trying match objecta $pos inside objectb loop id belongs objectb. not working, because can't objecta current loop $pos while inside objectb.

scenario 2:
tried using function next.

///>sample extension code public function testfn(){     return "<pre>testfn called!</pre>"; }//testfn  ///>sample.ss $testfn <!-- works outside of loop --> <% loop objecta_datalist %>     $testfn <!-- not work! --> <% end_loop %> 

scenario 3
got fed trying above scenarios work, , tried using controller.
so, i've decided pass arraylist template iterate on 1 loop.
but, can't seem values out. see below:

///>sample_controller.php public function sample(ss_httprequest $request){     ///... snippet ...     $buildarr = array();     foreach($objecta $obja){        $buildarr[$obja->id]['obja'] = $obja; //store objecta        $objb = objectb::get()->filter(array('status'=>'enabled','objecta_id'=>$obja->id));        $buildarr[$obja->id]['objb'] = $objb; //store objectb     }//foreach loop      $sample_data = new arraylist($buildarr);     //if var_dump here, looks great.     //so nothing seems problem $sample_data array      $data = array('mysample' => $sample_data);     return $this->customise($data)->renderwith(array('sample', 'page')); }//sample  ///>sample.ss <% loop mysample %>       <!-- don't know how data out -->       <!-- i've tried $title, $mysample.title, $mysample.objecta.title -->       <!-- nothing seems work. --> <% end_loop %> 

any assistance provided appreciated, thanks.

good morning!

i can coming solution using scenarios 2 , 3. first 1 wouldn't know how address scope of first loop correctly.

scenario 2

this 1 quite simple. need refer general scope top:

///>sample extension code public function testfn(){     return "<pre>testfn called!</pre>"; }//testfn  ///>sample.ss $testfn <!-- works outside of loop --> <% loop objecta_datalist %>     $top.testfn <!-- should work --> <% end_loop %> 

scenario 3

i adjusted third scenario job done here:

///>sample_controller.php public function sample(ss_httprequest $request){     // objecta     $objecta = objecta::get();      // run through objecta , add     // information objectb list of both     $data = new arraylist();     foreach($objecta $obja){         $objb = objectb::get()->filter(array(             'status' => 'enabled',             'objecta_id' => $obja->id         ));         $data->add(array(             'obja' => $obja,             'objb' => $objb         ));     }//foreach loop      return $this->customise(array('mysample' => $data))         ->renderwith(array('sample', 'page')); }//sample  ///>sample.ss <% loop $mysample %>     <!-- single dataobject -->     <p>obja: $obja.id</p>      <!-- datalist -->     <% loop $objb %>         <p>objb: $id</p>     <% end_loop %> <% end_loop %> 

this approach should work single dataobject datalist (similar arraylist). depending on data add arraylist within controler need adjust ss-file.

let me know if got further questions.

disclaimer: untested , without warranty, should still work