How to update table with new image data using codeigniter - php

Question

I have a form to upload image-path and other image-data. This works well when I choose to upload a new image.
How can I prevent that my image-path is set to blank if I submit my form without choosing a new image?
here is my controller:
function updatewaterpurifier($id)
{
$name=$this->input->post('name');
$this->load->model('user');
//$name = $this->input->post('name');
if($this->input->post('submit'))
{
//Check whether user upload picture
if(!empty($_FILES['picture']['name'])){
$new_file_name = $this->input->post('name');
$config['upload_path'] = 'uploads/images/';
$config['allowed_types'] = 'jpg|jpeg|png|gif|pdf';
$config['file_name'] = $new_file_name;
$config['max_size'] = 2048;
//Load upload library and initialize configuration
$this->load->library('upload',$config);
$this->upload->initialize($config);
if($this->upload->do_upload('picture')){
$uploadData = $this->upload->data();
$picture = $uploadData['file_name'];
}else{
$picture = '';
}
}else{
$picture = '';
}
//Prepare array of user data
$userData = array(
'product_brand'=> $this->input->post('brand'),
'product_name' => $this->input->post('name'),
'product_price' => $this->input->post('price'),
'product_techno' => $this->input->post('technology'),
'product_des' => $this->input->post('description'),
'product_image' => $picture
);
$this->db->where('id', $id);
$this->db->update('products', $userData);
//Pass user data to model
//Storing insertion status message.
}
//Form for adding user data
$this->load->model('user');
$this->data['h']= $this->user->editpurifier($id);
$this->load->view('editwaterpurifier', $this->data, FALSE);
}

Answer 1

if you are updating your table without previous image upload, your variable $picture=''. Use that to unset product_image from the array $userData():
$userData = array(
'product_brand'=> $this->input->post('brand'),
'product_name' => $this->input->post('name'),
'product_price' => $this->input->post('price'),
'product_techno' => $this->input->post('technology'),
'product_des' => $this->input->post('description'),
'product_image' => $picture
);
if ($picture==''){
unset($userData['product_image']);
}
This removes product_image from the array and won't updatinge the image path as blank.

Answer 2

In controller
function updatewaterpurifier($id)
{
$this->load->model('user');
if($this->input->post('submit'))
{
//Prepare array of user data
$userData = array(
'product_brand'=> $this->input->post('brand'),
'product_name' => $this->input->post('name'),
'product_price' => $this->input->post('price'),
'product_techno' => $this->input->post('technology'),
'product_des' => $this->input->post('description')
);
$name=$this->input->post('name');
//Check whether user upload picture
if(!empty($_FILES['picture']['name']))
{
$new_file_name = $this->input->post('name');
$config['upload_path'] = 'uploads/images/';
$config['allowed_types'] = 'jpg|jpeg|png|gif|pdf';
$config['file_name'] = $new_file_name;
$config['max_size'] = 2048;
//Load upload library and initialize configuration
$this->load->library('upload',$config);
$this->upload->initialize($config);
if($this->upload->do_upload('picture'))
{
$uploadData = $this->upload->data();
$picture = $uploadData['file_name'];
$userData['product_image']=$picture;
}
}
//Pass user data to model
$this->user->update_purifier($id,$userData);
}
//Form for adding user data
$this->data['h']= $this->user->editpurifier($id);
$this->load->view('editwaterpurifier', $this->data, FALSE);
}
Model
public function update_purifier($id,$userData)
{
$this->db->where('id', $id);
$this->db->update('products', $userData);
}
check product image name contain extention . if not add
$ext1 = explode('.',$_FILES['picture']['name']);
$ext2 = array_reverse($ext1);
$extention = strtolower($ext2[0]);
$config['file_name'] = $new_file_name.'.'.$extention;