How to leave value unchanged if left empty in form Codeigniter - php

Question

I have an updateform with an file input for adding a picture. What i'm trying to achieve is when I leave that field empty, the file will not be changed. So the photo I've uploaded earlier will stay in there.
My forminput is called: <td><?= form_upload('aanbiedingfoto');?></td>
And my database field is called fotonaam.
I tried something like this, but it did not work:
if($_FILES['aanbiedingfoto']['name'] != '') { $data['fotonaam'] = $_FILES['aanbiedingfoto']['name']; }
What am I doing wrong?
My controller:
function editaanbieding()
{
$data = array(
'Aanbieding' => $this->input->post('aanbiedingnaam'),
'Tekst' => $this->input->post('aanbiedingomschrijving'),
'Prijs' => $this->input->post('aanbiedingprijs'),
'Conditie' => $this->input->post('aanbiedingconditie')
);
if($_FILES['aanbiedingfoto']['name'] != '') { $data['fotonaam'] = $_FILES['aanbiedingfoto']['name']; }
print_r($_FILES);
$config['upload_path'] = './assets/uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '1000';
$config['max_width'] = '';
$config['max_height'] = '';
$config['overwrite'] = TRUE;
$config['remove_spaces'] = TRUE;
$config['file_name'] = $this->input->post('aanbiedingfoto');
$this->load->library('upload', $config);
if ( ! $this->upload->do_upload('aanbiedingfoto'))
{
$error = array('error' => $this->upload->display_errors());
}else{
$image_data = $this->upload->data();
}
$this->aanbieding_model->edit_aanbieding($data, $image_data);
redirect('members/aanbiedingen');
}
My model:
function edit_aanbieding($data, $image_data)
{
$id = $this->uri->segment(3);
$id2 = $this->input->post('fotoid');
$id3 = $this->input->post('aanbiedingid');
/*
echo 'bedrijfaanbiedingid ', $id, '<br/>';
echo 'fotoid ', $id2, '<br/>';
echo 'aanbiedingid ', $id3, '<br/>';
die;
*/
$this->db->where('idaanbiedingen', $id3);
$this->db->update('Aanbiedingen', $data);
$this->db->where('idfotoaanbiedingen', $id2);
$insertfoto = array(
'fotonaam' => $image_data['file_name']
);
$this->db->update('fotoaanbiedingen', $insertfoto);
$this->db->where('idbedrijfaanbiedingen', $id);
}

Answer 1

put your upload code inside the if statement:
<?php
if($_FILES['aanbiedingfoto']['name'] != ''){
if ( ! $this->upload->do_upload('aanbiedingfoto')){
$error = array('error' => $this->upload->display_errors());
}else{
$image_data = $this->upload->data();
}
$this->aanbieding_model->edit_aanbieding($data, $image_data, true);
}else{
$this->aanbieding_model->edit_aanbieding($data, $image_data, false);
}
?>
This is the edit function
<?php
function edit_aanbieding($data, $image_data, $uploaded = false){
$id = $this->uri->segment(3);
$id2 = $this->input->post('fotoid');
$id3 = $this->input->post('aanbiedingid');
/*
echo 'bedrijfaanbiedingid ', $id, '<br/>';
echo 'fotoid ', $id2, '<br/>';
echo 'aanbiedingid ', $id3, '<br/>';
die;
*/
$this->db->where('idaanbiedingen', $id3);
$this->db->update('Aanbiedingen', $data);
$this->db->where('idfotoaanbiedingen', $id2);
if($uploaded){ //update photo code
$insertfoto = array('fotonaam' => $image_data['file_name']);
$this->db->where('idbedrijfaanbiedingen', $id);
$this->db->update('fotoaanbiedingen', $insertfoto);
}
}
?>

Answer 2

If you don't upload any file, $image_data would be NULL.
While there are better solutions, you can fix this as simple as:
Find this section in your model and change it as below:
if (isset($image_data)) {
$insertfoto = array(
'fotonaam' => $image_data['file_name']
);
$this->db->where(...); // Fill the blank with correct arguments
$this->db->update('fotoaanbiedingen', $insertfoto);
}
Side note:
This is completely optional. To increase the performance and get rid of probable errors, I suggest the following:
Avoid of loading libraries or calling methods when not needed.
Set default value for function arguments.
Just as a Demo:
The Controller:
...
if (! empty($_FILES['aanbiedingfoto']['name'])) {
$data['fotonaam'] = $_FILES['aanbiedingfoto']['name'];
$config['upload_path'] = './assets/uploads/';
$config['allowed_types'] = 'gif|jpg|png';
$config['max_size'] = '1000';
$config['max_width'] = '';
$config['max_height'] = '';
$config['overwrite'] = TRUE;
$config['remove_spaces'] = TRUE;
$config['file_name'] = $this->input->post('aanbiedingfoto');
$this->load->library('upload', $config);
if ($this->upload->do_upload('aanbiedingfoto')) {
$this->aanbieding_model->edit_aanbieding($data, $this->upload->data());
} else {
$error = array('error' => $this->upload->display_errors());
// If you want to update the table while the uploading failed
$this->aanbieding_model->edit_aanbieding($data);
}
}
...
The Model:
function edit_aanbieding($data, $image_data = NULL)
{
...
if (isset($image_data)) {
$insertfoto = array(
'fotonaam' => $image_data['file_name']
);
$this->db->where(...); // Fill the blank with correct arguments
$this->db->update('fotoaanbiedingen', $insertfoto);
}
...
}