Passing variable from controller to model functions - php

Question

Hi Im stucked with this for 4 days now, i have read massive amount of related articles, but seems nothing is working.
First i will explain my idea, give you some code and then i will tell what i have tried.
Idea. I have 2 separate db tables 'project' and 'pictures'. In project table i put info about projects (id, title, pubdate, template etc.) and i need to assign some pictures to that project so on pictures table i have "project_id" column which is relating those two. In my controller i have function project_picture_proccess($id) this $id is changing according to which project im clicking on and that is how all related pictures are fetched. problem is i cant pass that current project $id to upload model (this is for setting upload path for current project).
This is my controller:
class project extends Admin_Controller{
public function __construct(){
parent::__construct();
$this->load->model('project_m');
$this->load->model('project_pictures_m');
//here is index() function and some other (not related to my problem)
public function project_picture_proccess($id = NULL){
//$id variable is from current project im editing
//and changes according to project id
$this->load->model('upload_m');
if ($id) {
//search for directory in upload path with current project slug name
//and if there isnt any it will create it and add proper rights
$this->project_m->search_and_create_dir($id);
//function get_images is fetching all images that current project has
$this->data['project_images'] = $this->project_m->get_images($id);
//this function is setting upload config (setting upload path
//based on directory created in above)-its working var_dump'ed it
$this->upload_m->set_upload_config($id);
}
if($this->input->post('upload')){
//do_multi_upload works on multiple images just fine
//but i cant make it to get outcome of set_upload_config function
//so i can set upload_path very manualy and everything i upload is in mess
$this->upload_m->do_multi_upload();
//redirection function does not work because it is not getting
//any project_m data and i have lost all project_m related data in my view
//its title of project im editing and its id
redirect('admin/project/project_picture_proccess');
}
$this->data['error'] = array('error' => '');
$this->data['project'] = $this->project_m->get($id);
//function get_images is fetching all unsorted images uploaded in
//the path created above for further proccessing
$this->data['unsorted_img'] = $this->upload_m->get_unsorted();
$this->data['subview'] = 'admin/project/picture_proccess';
$this->load->view('admin/main', $this->data);
}
and here is my model:
class Upload_m extends MY_model{
protected $pic_path;
protected $_primary_filter = 'intval';
protected $_table_name = 'projects';
function Upload_m(){
parent::__construct();
$this->pic_path = realpath(APPPATH . '../img/');
function get_slug($id = NULL){
if($id !=NULL){
$filter = $this->_primary_filter;
$id = $filter($id);
$result = mysql_query('SELECT slug FROM ' . $this->_table_name . ' WHERE id=' . $id . ' limit 1');
$data = mysql_fetch_row($result);
$name = array_shift($data); //array - need to be string
return $name;
}else return;
}
function set_upload_config($id){
if($id == NULL) return;
$slug = $this->get_slug($id);
$upload_config = array(
'allowed_types' => 'jpg|gif|jpeg|png|bmp',
'upload_path' => $this->pic_path . $slug . '/',
'max_size' => 0
);
return $upload_config;
}
function do_multi_upload(){
$this->load->library('upload');
$this->upload->initialize($this->set_upload_config());
if($this->upload->do_multi_upload('userfile')){
var_dump($this->upload->get_multi_upload_data());
return;
}else echo "Error at uploading";
}
Here is what i have tried:
moving if($this->input->post...) method inside if($id) scope and
nothing is passed to view and noting is passed to model
tried like every single solution on stackoverflow: these very common tip was $this->load->model('upload_m', $id) <-
returning null when var_dump($id) tested on function
do_something($id){var_dump($id); die;}
i have made global variables and tried to fetch them by get_class_vars
i have rewrite system/core/libraries/model function to accept variable on do_multi_upload($field<-this is default,
$var=NULL<-optional)
i have tried to put those variables in __construct() function like __construct($var)
i have tried to change name of that $id to $var and put it inside if($this->input->post('upload') && $var === $id) and tried to use $var in model. didnt work this approach
I am so desperate this has taken too too much my time. My goal is to pass $id to upload function to set correct upload path and save data into database url (taken from upload_path), project_id ->taken from passed $id. Any help will be appreciated even if its a suggestion how to change my structure so i could still meet my goals.