Error Trying to get property of non-object and Undefined variable: Codeigniter

Question

I am facing the following error:

Trying to get property of non-object and Undefined variable php errors in my code

Controller:

function showDoctorInformation(){
    $this->load->model('PatientModel');
    $data['doctorinfo'] = $this->PatientModel->getDoctorInformation();
    $this->parser->parse('patient_msgview', $data);

}

Model:

function getDoctorId() {
        $this->db->from('person');
        $this->db->select('doctorId');
        $doctorId = $this->db->get()->result();
        return $doctorId;
    }

function getDoctorInformation() {


    $doctorId = $this->getDoctorId();

        $this->db->from('DoctorInfo');
        $this->db->where('doctorId', $doctorId);
        $this->db->select('name', 'surname', 'Bio', 'Address', 'img');
        $doctorinfo = $this->db->get()->result();
        return $doctorinfo;

}

View:

<?= $doctorinfo->name ?>

I have displayed information from the database before with this method and I can't see the error now.

Saty · Accepted Answer · 2015-12-16 13:16:56Z

1

result() return

This method returns the query result as an array of objects, or an empty array on failure

So you need to fetch single data form your database using ->row()

function getDoctorId() {
$this->db->select('doctorId');
$this->db->from('person');
$this->db->select('doctorId');
$query = $this->db->get();
if ($query->num_rows == 1) {
     $row=$query->row();// fetch single row
     return $row->doctorId;// get doctor id
} else {
    return FALSE;
}
}

And in viwe you have to get your data using foreach loop

For exm

foreach ($doctorinfo as $row)
{
        echo $row['title'];
        echo $row['name'];
        echo $row['body'];
}

edited Dec 16, 2015 at 13:16

answered Dec 16, 2015 at 13:11

Saty

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6 Comments

Noel Peña Blanco Over a year ago

the function getDoctorId is onlly called in the function getDoctorInformation, i have tried but still the same error.

Noel Peña Blanco Over a year ago

Yes after using your updated i get this error: A PHP Error was encountered Severity: Notice Message: Undefined variable: doctorinfo Filename: views/patient_msgview.php Line Number: 100 Backtrace: File: /home/a15_web01/web/application/views/patient_msgview.php Line: 100 Function: _error_handler File: /home/a15_web01/web/application/controllers/PatientController.php Line: 51 Function: parse File: /home/a15_web01/web/index.php Line: 292 Function: require_once

Saty Over a year ago

Post your controller code too and value of print_r($doctorinfo);

Noel Peña Blanco Over a year ago

thats is my controller: ** function showDoctorInformation(){ $this->load->model('PatientModel'); $data['doctorinfo'] = $this->PatientModel->getDoctorInformation(); $this->parser->parse('patient_msgview', $data); }** and the value i dont see anything when i use print_r($doctorinfo);

Saty Over a year ago

use echo $this->db->last_query(); to print last query and check it

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