javascript - Passing data to server using JSON in Codeigniter -

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i'm trying pass data stored in javascript array server database processings. i'm using codeignier.

javascript array (unitdata_set):-

[{"unit_id":"13","unit_title":"testsdsdf","unit_max_occupancy":"3","unit_no":"1","unit_no_adults":"1","unit_no_children":"1","unit_no_extrabed":0,"unit_mealtype":"full board","unit_fullboard_adult":"6000.00","unit_fullboard_child":"4000.00","unit_halfboard_adult":"1800.00","unit_halfboard_child":"1200.00","room_total":"81600.00","all_room_price":"81600.00","extra_bed_price":"4.00","meal_price":22000,"saving_amount":16320,"discounted_bedroom_price":65280},{"unit_id":"14","unit_title":"res2","unit_max_occupancy":"12","unit_no":"0","unit_no_adults":"0","unit_no_children":"0","unit_no_extrabed":0,"unit_mealtype":"bed , breakfast","unit_fullboard_adult":"9000.00","unit_fullboard_child":"7000.00","unit_halfboard_adult":"7000.00","unit_halfboard_child":"5000.00","room_total":"86400.00","all_room_price":"0.00","extra_bed_price":"","meal_price":0,"saving_amount":0,"discounted_bedroom_price":0}]

ajax function:-

  function sendbooking(){            var boooking_url = "<?php echo site_url('tempbooking/addbooking'); ?>";           var data_booking = '';           data_booking = json.stringify(unitdata_set);            $.post(boooking_url,{              'booking_data[]':data_booking            },function(data){             console.log(data);            });        }

my controller function used receive json data:-

function addbooking(){             $booking_data=$this->input->post('booking_data');               foreach ($booking_data $booking) {                               $booking_attr = json_decode($booking);                         echo $booking_attr->unit_id . " " . $booking_attr->unit_title;                         //echo $booking_attr['unit_id'] . " " . $booking_attr['unit_title'];                 }           }

the error message get:-

<h4>a php error encountered</h4>  <p>severity: notice</p> <p>message:  trying property of non-object</p> <p>filename: controllers/tempbooking.php</p> <p>line number: 156</p>  </div><div style="border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;">  <h4>a php error encountered</h4>  <p>severity: notice</p> <p>message:  trying property of non-object</p> <p>filename: controllers/tempbooking.php</p> <p>line number: 156</p>  </div>

print_r :-

print_r($this->input->post('booking_data'));  array (     [0] => [{"unit_id":"13","unit_title":"testsdsdf","unit_max_occupancy":"3","unit_no":"1","unit_no_adults":"1","unit_no_children":"1","unit_no_extrabed":0,"unit_mealtype":"full board","unit_fullboard_adult":"6000.00","unit_fullboard_child":"4000.00","unit_halfboard_adult":"1800.00","unit_halfboard_child":"1200.00","room_total":"81600.00","all_room_price":"81600.00","extra_bed_price":"4.00","meal_price":22000,"saving_amount":16320,"discounted_bedroom_price":65280},{"unit_id":"14","unit_title":"res2","unit_max_occupancy":"12","unit_no":"0","unit_no_adults":"0","unit_no_children":"0","unit_no_extrabed":0,"unit_mealtype":"bed , breakfast","unit_fullboard_adult":"9000.00","unit_fullboard_child":"7000.00","unit_halfboard_adult":"7000.00","unit_halfboard_child":"5000.00","room_total":"86400.00","all_room_price":"0.00","extra_bed_price":"","meal_price":0,"saving_amount":0,"discounted_bedroom_price":0}] )

try change controller

function addbooking() {     $booking_data=json_decode($this->input->post('booking_data'));     foreach ($booking_data $booking)      {            $booking_attr = ($booking);         echo $booking_attr->unit_id . " " . $booking_attr->unit_title;         //echo $booking_attr['unit_id'] . " " . $booking_attr['unit_title'];     } }

and change javascript code this

function sendbooking() {       var boooking_url = "<?php echo site_url('tempbooking/addbooking'); ?>";       var data_booking = '';       data_booking = (unitdata_set);        $.post(boooking_url,{          'booking_data':data_booking        },function(data){         console.log(data);        });    }

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