CodeIgniter : Undefined index in model variable - arrays

Question

I have the below code in of of my models. Im loading the offer details page and it gave me the error
Severity: Notice
Message: Undefined index: viewc
Filename: statistics/Statistic_model.php
Line Number: 551
Statistic_model:
public function getTotalDetailsViewOfActiveOffer($comid) {
$this->db->select('count(statistic_offer_view_count.id) as viewc');
$this->db->from('statistic_offer_view_count');
$this->db->join('offers', 'offers.id = statistic_offer_view_count.offer_id');
$this->db->where('offers.com_id',$comid);
$this->db->where('offers.approved_status',"2");
$this->db->where('offers.enddate >=',date('Y-m-d'));
$this->db->group_by("offers.com_id");
$query = $this->db->get();
$row = $query->result_array();
$count=$row['viewc']; //this is line 551
}
Any idea how to fix this error?

Answer 1

That error means that the index viewc is not in the array $query->result_array() most likely because your query failed or returned null. You should get into the habit of doing:
$query = $this->db->get();
if ($query->num_rows() > 0) {
return $query->row()->viewc;
}
return false; // or in this case 0 or whatever

Answer 2

In Your Code You Selecting data from database Multiple array's.And assigning at to a variable like a single array.
Your Code....
$row = $query->result_array();
$count=$row['viewc'];
correct way is in your conduction to assign a variable is....
$data = array();
foreah($row as $key => $value){
$data[$key] = $value['viewc'];
}