ERROR Message: Trying to get property of non-object in CODEIGNITER - php

Question

I'm trying to get data from a certain table where the member id from a dropdown lis value is equal to the id from the other table. And i'm using jquery ajax also.
Here's my controller transactions.php
function getdataload(){
$this->db->where('member',$this->input->post('member'));
echo $this->db->get('loading_service')->row()->member;
}
And here's is my view.php
<label for="member">Member</label>
<select class="form-control" id="member" name="member" required onchange="showCustomer(this.value)">
<option selected="" value="">--select--</option>
<?php foreach ($members as $row): ?>
<option value="<?php echo $row->mem_id; ?>"><?php echo ucwords($row->mem_fname.' '.$row->mem_lname) ?></option>
<?php endforeach ?>
</select>
<p class="help-block text-danger" style="margin-left: 600px; margin-top: -450px; color: red;"><span id="select_member"> </span></p>
<script>
$('#member').on('change',function(){
$.post('<?php echo base_url("transactions/getdataload")?>',
{
mem_id:$(this).val()
}).done(function(res)
{
$('#select_member').text(res);
});
});
</script>
Please help me with this guys:

Answer 1

The first thing to do is make sure you are getting results from your query. Try something like
$query = $this->db->get(...);
if ($query->num_rows() > 0) {
return json_encode($query->result());
} else {
return "No data found";
}
then handle the no data error gracefully in your ajax success code. I sort of guessed that you would want your query result returned as json.

Answer 2

Try:
model
function getData()
{
$this->db->select('field_name');
$this->db->from('loading_service');
$this->db->where('member',$this->input->post('member'));
$query=$this->db->get();
return $query->row();
}
Controller
function getdataload(){
$data['member'] = $this->model_name->getData();
$this->load->view("view_name",$data);
}