Trying to get property of non-object

[yuanven]

Hello. Please help me because I can't get this done.

 

This is where I input and go to controller function simpan_nilai

<form method="post" action="<?php echo base_url('administrator/nilai/simpan_nilai'); ?>">

	  	<table class="table table-striped table-hover table-bordered mt-4">
	  		<tr>
	  			<td width="25px">NO</td>
	  			<td width="150px">NIM</td>
	  			<td>NAMA MAHASISWA</td>
	  			<td>NILAI</td>
	  		</tr>

	  		<?php 
	  		$no = 1;
	  		foreach ($list_nilai as $row) : 		 ?>
	  			<tr>
	  				<td><?php echo $no++ ?></td>
	  				<td><?php echo $row->nim; ?></td>
	  				<td><?php echo $row->nama_lengkap ?></td>
	  				<input type="hidden" name="id_krs[]" value="<?php $row->id_krs; ?>">
	  				<td width="25px"><input type="text" name="nilai[]" class="form-control" value="<?php echo $row->nilai; ?>"></td>
	  			</tr>

	  		<?php endforeach; ?>
	  	</table>

	  	<button type="submit" class="btn btn-primary">Simpan</button>
	  	
	  </form>

 

This is function simpan_nilai and go to view daftar_nilai

public function simpan_nilai()
	{
		$query = array();
		$id_krs		= $_POST['id_krs'];
		$nilai 		= $_POST['nilai'];

		for($i=0; $i>sizeof($id_krs); $i++)
		{
			$this->db->set('nilai', $nilai[$i])->where('id_krs',$id_krs[$i])->update('krs');
		}

		$data = array(
			'id_krs'	=> $id_krs
		);

		$this->load->view('templates_administrator/header');
		$this->load->view('templates_administrator/sidebar');
		$this->load->view('administrator/daftar_nilai',$data);
		$this->load->view('templates_administrator/footer');
	}

 

This is view daftar_nilai

<?php 

$nilai = get_instance();
$nilai->load->model('krs_model');
$nilai->load->model('mahasiswa_model');
$nilai->load->model('matakuliah_model');
$nilai->load->model('tahunakademik_model');

$krs = $nilai->krs_model->get_by_id($id_krs[0]);
$kode_matakuliah = $krs->kode_matakuliah;
$id_thn_ak = $krs->id_thn_ak;
 ?>

 <div class="container-fluid">
 	<div class="alert alert-success">
 		<i class="fas fa-university"></i> DAFTAR NILAI MAHASISWA
 	</div>

 	

 	<table class="table table-hover table-bordered table-striped mt-3">
 		<tr>
 			<td>NO</td>
 			<td>NIM</td>
 			<td>NAMA LENGKAP</td>
 			<td>
 			
 			<?php 
 			$no = 1;
 			for($i=0; $i<sizeof($id_krs); $i++)
 			{

 			 ?>

 			 <tr>
 			 	<td><?php echo $no++ ?></td>
 			 	<?php $nim = $nilai->krs_model->get_by_id($id_krs[$i])->nim; ?>
 			 	<td><?php echo $nim; ?></td>
 			 	<td><?php echo $nilai->mahasiswa_model->get_by_id($nim)->nama_lengkap ?></td>
 			 	<td><?php echo $nilai->krs_model->get_by_id($id_krs[$i])->nilai ?></td>
 			 </tr>
 			
 			<?php }  ?>
 			</td>
 		</tr>
 		
 	</table>
 </div>

 

 

And I get this error

A PHP Error was encountered
Severity: Notice

Message: Trying to get property 'kode_matakuliah' of non-object

Filename: administrator/daftar_nilai.php

Line Number: 10

Backtrace:

File: C:\xampp\htdocs\sisfo_akademikk\application\views\administrator\daftar_nilai.php
Line: 10
Function: _error_handler

File: C:\xampp\htdocs\sisfo_akademikk\application\controllers\administrator\nilai.php
Line: 149
Function: view

File: C:\xampp\htdocs\sisfo_akademikk\index.php
Line: 315
Function: require_once

 

 

 

Thankyou for your help!

[mac_gyver]

the only thing that's apparent from the posted information is that $krs isn't an object. you can use var_dump($krs); to find out what it is, then work backwards to find why it isn't what you expect.