PHP Laravel 4 Array to nested JSON -

i using laravel 4. @ beginner stage not aware of features of php laravel framework.

i have array fetched table below :

$result = model::all();  

that gives :

[0]=>[        [id]=>1        [name]=>"abc"        [description]="temp"        [tempfield1]="t1"        [tempfield2]="t2"        [tempfield3]="t3" ] [1]=>[        [id]=>1        [name]=>"xyz"        [description]="temp2"        [tempfield1]="t21"        [tempfield2]="t22"        [tempfield3]="t23" ] ... , on.  

now, want generate json array :

"items":[{     "id": 1,      "name":"abc",      "description":"temp",     "temps":[{             "temp1":"t1",              "temp2":"t2",              "temp3":"t3",             }]     },      {     "id": 2,      "name":"xyz",      "description":"temp2",     "temps":[{             "temp1":"t21",              "temp2":"t22",              "temp3":"t23",             }]     }     ... , on ] 

to achieve this, have created item class have properties id, name , description.

class item{    public $id;     public $name;     public $description;  } 

also have created temp class extends item class , having properties temp1, temp2 , temp3.

class temp extends item{    public $temp1;     public $temp2;     public $temp3;  } 

what idea create list of type class temp , create foreach loop fetch each record array given above , populate object of temp class respective properties , push object list. example,

$list = array();   foreach ($result $row){       $objtemp = new temp();       $objtemp->id = $row["id"];       $objtemp->name = $row["name"];       $objtemp->description= $row["description"];       $objtemp->temp1= $row["tempfield1"];             $objtemp->temp2= $row["tempfield2"];             $objtemp->temp3= $row["tempfield3"];              list->push($objtemp); } 

and idea convert list json. failed achieve so. print_r($objtemp) gives me list flat structure, not nested temp fields.

can me achieve nested json using flat array please?

thanks in advance..

in controller put:

return response::json($result); 

but should define relationship between item , temp (something like):

class item extends eloquent{    public $id;     public $name;     public $description;       public function temps()     {         return $this->hasmany('temp','user_id', 'user_id');     } }