Pre-populate update form with data from the database - php

Question

UPDATE:
If, in the view, I do <?php echo $customer->first_name; ?> it outputs the first-name correctly.
On the same view file 'value' => set_value($customer->first_name) outputs nothing.
I am making a "Customers" CRUD application in CodeIgniter 3. I have an update form that I want to pre-populate with the data corresponding to the customer, already existent in he database.
The model looks like this:
class Customer extends CI_Model {
/*Lots
of
code*/
public function getAllCustomers($customer_id) {
$query = $this->db->get_where('customers', array('id' => $customer_id));
if ($query->num_rows() > 0) {
return $query->row();
}
}
}
The controller looks like this:
class Home extends CI_Controller {
/*Lots
of
code*/
public function edit($customer_id){
$this->load->model('Customer');
$customer = $this->Customer->getAllCustomers($customer_id);
$this->load->view('update', ['customer'=>$customer]);
}
}
In the view file (update.php) I have:
<?php echo form_input('first_name', '', [
'type' => 'text',
'id' => 'first_name',
'class' => 'form-control',
'value' => set_value($customer->first_name),
'placeholder' => 'First name',
]);
?>
The customer's first_name, although existent in the the database column called "first_name" does not pre-populate the form.
Why is this?

Answer 1

always debug using$this->db->last_query() to check your query executing correctly
if last_query() doesnot return nothing make sure your set 'save_queries' => TRUE in app/config/database.php
your query might return more than one result
change your model like this
public function getAllCustomers($customer_id) {
$q = $this->db->get_where('customers', array('id' => $customer_id));
log_message("error",$this->db->last_query()); //use this to get the complied query for debugging purpose
if ($q->num_rows() > 0) {
foreach (($q->result()) as $row) {
$data[] = $row;
}
return $data;
}
return FALSE;
}
if you are sure that your query might return only one result then check $customer_id has data in it
public function getAllCustomers($customer_id) {
if($customer_id){
$q = $this->db->get_where('customers', array('id' => $customer_id),1); //specify the limit if you want to get only one row
log_message("error",$this->db->last_query()); //use this to get the complied query for debugging purpose
if ($q->num_rows() > 0) {
return $q->row();
}
}
return FALSE;
}

Answer 2

That's how to do it:
<?php echo form_input('first_name', set_value('first_name', $customer->first_name),[
'id' => 'first_name',
'class' => 'form-control'
]);
?>