render - FatFree pass array to a view using Jig data mapper -

i have data/faqs.json this.

{     "section-1" : {          "sub-section-1" : {             "557aef62e0629": {                 "question": "how you?",                 "answer": "fine.. you?"             },              "557af3d40b041": {                 "question": "question",                 "answer": "answer question"             }         },         "sub-section-2": {             "557af3d80b041": {                 "question": "another section question?",                 "answer": "another section answer?"             }         }     },     "section-2" : {             "557af32d201f6": {                 "question": "question",                 "answer": "answer question"             },             "557af33c7c60e": {                 "question": "question",                 "answer": "answer question"             }     } } 

and in controller method:

    $faqs = [];      $mapper = new \db\jig\mapper($this->db, 'faqs.json');     $mapper->load();      while (!$mapper->dry()) {         $faqs[] = $mapper->cast();         $mapper->next();     }     $this->f3->set('faqdata', $faqs); 

to send faqdata view.

in view tried:

<repeat group="{{ @faqdata[1] }}" key="{{ @key }}" value="{{ @faqs }}">     <div>         <p><span><b>{{ @key }}</b></span></p>         <repeat group="{{ @faqs }}" key="{{ @k }}" value="{{ @v }}">             <dt>{{ @k }}</dt>             <dd>{{ @v }}</dd>         </repeat>     </div> </repeat> 

to read section-2 of faqs, error:

invalid argument supplied foreach()

why @faqs considered invalid argument foreach()?

edit:

this var_dump shows:

array(2) {   [0]=>   array(3) {     ["sub-section-1"]=>     array(5) {       ["557aef62e0629"]=>       array(2) {         ["question"]=>         string(12) "how you?"         ["answer"]=>         string(11) "fine.. you?"       }       ["557af0d114839"]=>       array(2) {         ["question"]=>         string(35) "hi there, quesiton number 2"         ["answer"]=>         string(19) "this answer no 2"       }       ["557af32d201f6"]=>       array(2) {         ["question"]=>         string(8) "question"         ["answer"]=>         string(18) "answer question"       }       ["557af33c7c60e"]=>       array(2) {         ["question"]=>         string(8) "question"         ["answer"]=>         string(18) "answer question"       }       ["557af3d40b041"]=>       array(2) {         ["question"]=>         string(8) "question"         ["answer"]=>         string(18) "answer question"       }     }     ["sub-section-2"]=>     array(1) {       ["557af3d80b041"]=>       array(2) {         ["question"]=>         string(25) "another section question?"         ["answer"]=>         string(23) "another section answer?"       }     }     ["_id"]=>     string(9) "section-1"   }   [1]=>   array(3) {     ["557af32d201f6"]=>     array(2) {       ["question"]=>       string(8) "question"       ["answer"]=>       string(18) "answer question"     }     ["557af33c7c60e"]=>     array(2) {       ["question"]=>       string(8) "question"       ["answer"]=>       string(18) "answer question"     }     ["_id"]=>     string(9) "section-2"   } } 

so isn't section-2 array of arrays?

that's because @faqdata[1] contains index of array: _id => 'section-2'. can't loop through properties. should call expected properties instead (question , answer).

anyway since intent whole data array, direct call jig::read simpler. don't need mapper that. see:

$faqs = $this->db->read('faqs.json'); 

now $faqs['section-2'] contains 2nd section.

update:

in order display kind of data, need recursive view. can achieved, using with attribute of <include> tag. cf. docs.

here's how in case, assuming view named faqs.html:

<ul> <repeat group="@faqs" key="@section" value="@data">     <li>         <span>{{ @section }}</span>         <check if="($faq=reset(@data)) && isset(@faq.question)">             <true>                 <ul>                     <repeat group="@data" value="@faq">                         <li>                             {{ @faq.question }}                             =>                             {{ @faq.answer }}                         </li>                     </repeat>                 </ul>             </true>              <false>                 <include href="faqs.html" with="faqs={{ @data }}"/>             </false>         </check>     </li> </repeat> </ul>