Codeigniter website and REST api from same models

you can use a library but this is so incredibly simple with codeigniter
so here is a sample method, its getting an order based on an id and then sending it as JSON  

PHP Code:

// load your model in this case getorders
// validate the $id 
// then call something like:

function jsonOneOrder($id) {


        
       if ( ! $orderdetail = $this->getorders->getOne( $id ) ) {

              // if the order does not come back go to error page
              $this->error_msg .= 'Error getting orders' ;
               $this->_showError() ; }

     // we have $orderdetail output as JSON 
    $this->output
    ->set_content_type('application/json')
    ->set_output(json_encode($orderdetail));

}   


the other very cool thing -- $orderdetail can be an array returned from the model  -- but it also can be an object returned by the model.

so then for the receiving server -- decode JSON -- and you can use $orderdetail->name, $orderdetail->id, etc etc