<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/* * *****************Material.php**********************************
* @product name : University Management System Express
* @type : Class
* @class name : Material
* @description : Manage academic material for each class as per school course curriculam.
* @author : Farid Ahmed, Webmaster, BDU
* @url : https://bdu.ac.bd/
* @support : farid0001@bdu.ac.bd
* @copyright : BDU ICT Team
* ********************************************************** */
class Material extends MY_Controller {
public $data = array();
function __construct() {
parent::__construct();
$this->load->model('Material_Model', 'material', true);
}
/*****************Function index**********************************
* @type : Function
* @function name : index
* @description : Load "Material List" user interface
* with class wise listing
* @param : $id integer value
* @return : null
* ********************************************************** */
public function index($class_id = null) {
check_permission(VIEW);
if(isset($class_id) && !is_numeric($class_id)){
error($this->lang->line('unexpected_error'));
redirect('academic/material/index');
}
// for super admin
$school_id = '';
if($_POST){
$school_id = $this->input->post('school_id');
$class_id = $this->input->post('class_id');
}
$this->data['class_id'] = $class_id;
$this->data['filter_class_id'] = $class_id;
$this->data['filter_school_id'] = $school_id;
$this->data['materials'] = $this->material->get_material_list($class_id, $school_id);
$condition = array();
$condition['status'] = 1;
if($this->session->userdata('role_id') != SUPER_ADMIN){
$condition['school_id'] = $this->session->userdata('school_id');
$this->data['classes'] = $this->material->get_list('classes', $condition, '','', '', 'id', 'ASC');
}
$this->data['schools'] = $this->schools;
$this->data['list'] = TRUE;
$this->layout->title($this->lang->line('manage_study_material') . ' | ' . SMS);
$this->layout->view('material/index', $this->data);
}
/*****************Function add**********************************
* @type : Function
* @function name : add
* @description : Load "Add new Material" user interface
* and store "Material" into database
* @param : null
* @return : null
* ********************************************************** */
public function add() {
check_permission(ADD);
if ($_POST) {
$this->_prepare_material_validation();
if ($this->form_validation->run() === TRUE) {
$data = $this->_get_posted_material_data();
$insert_id = $this->material->insert('study_materials', $data);
if ($insert_id) {
$class = $this->material->get_single('classes', array('id' => $data['class_id'], 'school_id'=>$data['school_id']));
create_log('Has been added material : '. $data['title'].' for class : '. $class->name);
success($this->lang->line('insert_success'));
redirect('academic/material/index/'.$data['class_id']);
} else {
error($this->lang->line('insert_failed'));
redirect('academic/material/add/'.$data['class_id']);
}
} else {
error($this->lang->line('insert_failed'));
$this->data['post'] = $_POST;
}
}
$class_id = $this->uri->segment(4);
if(!$class_id){
$class_id = $this->input->post('class_id');
}
$this->data['class_id'] = $class_id;
$this->data['materials'] = $this->material->get_material_list($class_id);
$condition = array();
$condition['status'] = 1;
if($this->session->userdata('role_id') != SUPER_ADMIN){
$condition['school_id'] = $this->session->userdata('school_id');
$this->data['classes'] = $this->material->get_list('classes', $condition, '','', '', 'id', 'ASC');
}
$this->data['schools'] = $this->schools;
$this->data['add'] = TRUE;
$this->layout->title($this->lang->line('add'). ' | ' . SMS);
$this->layout->view('material/index', $this->data);
}
/*****************Function edit**********************************
* @type : Function
* @function name : edit
* @description : Load Update "Material" user interface
* with populated "Material" value
* and update "Material" database
* @param : $id integer value
* @return : null
* ********************************************************** */
public function edit($id = null) {
check_permission(EDIT);
if(!is_numeric($id)){
error($this->lang->line('unexpected_error'));
redirect('academic/material/index');
}
if ($_POST) {
$this->_prepare_material_validation();
if ($this->form_validation->run() === TRUE) {
$data = $this->_get_posted_material_data();
$updated = $this->material->update('study_materials', $data, array('id' => $this->input->post('id')));
if ($updated) {
$class = $this->material->get_single('classes', array('id' => $data['class_id'], 'school_id'=>$data['school_id']));
create_log('Has been updated material : '. $data['title'].' for class : '. $class->name);
success($this->lang->line('update_success'));
redirect('academic/material/index/'.$data['class_id']);
} else {
error($this->lang->line('update_failed'));
redirect('academic/material/edit/' . $this->input->post('id'));
}
} else {
error($this->lang->line('update_failed'));
$this->data['material'] = $this->material->get_single('study_materials', array('id' => $this->input->post('id')));
}
}
if ($id) {
$this->data['material'] = $this->material->get_single('study_materials', array('id' => $id));
if (!$this->data['material']) {
redirect('academic/material/index');
}
}
$class_id = $this->data['material']->class_id;
if(!$class_id){
$class_id = $this->input->post('class_id');
}
$this->data['class_id'] = $class_id;
$this->data['filter_class_id'] = $class_id;
$this->data['materials'] = $this->material->get_material_list($class_id, $this->data['material']->school_id);
$condition = array();
$condition['status'] = 1;
if($this->session->userdata('role_id') != SUPER_ADMIN){
$condition['school_id'] = $this->session->userdata('school_id');
$this->data['classes'] = $this->material->get_list('classes', $condition, '','', '', 'id', 'ASC');
}
$this->data['school_id'] = $this->data['material']->school_id;
$this->data['filter_school_id'] = $this->data['material']->school_id;
$this->data['schools'] = $this->schools;
$this->data['edit'] = TRUE;
$this->layout->title($this->lang->line('edit'). ' | ' . SMS);
$this->layout->view('material/index', $this->data);
}
/*****************Function view**********************************
* @type : Function
* @function name : view
* @description : Load user interface with specific material data
*
* @param : $material_id integer value
* @return : null
* ********************************************************** */
public function view( $material_id = null ){
check_permission(VIEW);
if(!is_numeric($material_id)){
error($this->lang->line('unexpected_error'));
redirect('academic/material/index');
}
$this->data['material'] = $this->material->get_single_material( $material_id);
$class_id = $this->data['material']->class_id;
$this->data['materials'] = $this->material->get_material_list($class_id);
$condition = array();
$condition['status'] = 1;
if($this->session->userdata('role_id') != SUPER_ADMIN){
$condition['school_id'] = $this->session->userdata('school_id');
}
$this->data['classes'] = $this->material->get_list('classes', $condition, '','', '', 'id', 'ASC');
$this->data['class_id'] = $class_id;
$this->data['schools'] = $this->schools;
$this->data['detail'] = TRUE;
$this->layout->title($this->lang->line('view'). ' ' . $this->lang->line('material'). ' | ' . SMS);
$this->layout->view('material/index', $this->data);
}
/*****************Function get_single_material**********************************
* @type : Function
* @function name : get_single_material
* @description : "Load single material information" from database
* to the user interface
* @param : null
* @return : null
* ********************************************************** */
public function get_single_material(){
$material_id = $this->input->post('material_id');
$this->data['material'] = $this->material->get_single_material( $material_id);
echo $this->load->view('material/get-single-material', $this->data);
}
/*****************Function _prepare_material_validation**********************************
* @type : Function
* @function name : _prepare_material_validation
* @description : Process "material" user input data validation
*
* @param : null
* @return : null
* ********************************************************** */
private function _prepare_material_validation() {
$this->load->library('form_validation');
$this->form_validation->set_error_delimiters('<div class="error-message" style="color: red;">', '</div>');
$this->form_validation->set_rules('school_id', $this->lang->line('school_name'), 'trim|required');
$this->form_validation->set_rules('class_id', $this->lang->line('class'), 'trim|required');
$this->form_validation->set_rules('subject_id', $this->lang->line('subject'), 'trim|required');
$this->form_validation->set_rules('title', $this->lang->line('title'), 'trim|required');
$this->form_validation->set_rules('description', $this->lang->line('description'), 'trim');
$this->form_validation->set_rules('material', $this->lang->line('material'), 'trim|callback_material');
}
/*****************Function material**********************************
* @type : Function
* @function name : material
* @description : Unique check for "material file content" data/value
*
* @param : null
* @return : boolean true/false
* ********************************************************** */
public function material()
{
if($_FILES['material']['name'])
{
$name = $_FILES['material']['name'];
$ext = pathinfo($name, PATHINFO_EXTENSION);
if ($ext == 'pdf' || $ext == 'doc' || $ext == 'docx' || $ext == 'ppt' || $ext == 'pptx' || $ext == 'txt'|| $ext == 'xls' || $ext == 'jpg' || $ext == 'jpeg' || $ext == 'png' || $ext == 'gif') {
return TRUE;
} else {
$this->form_validation->set_message('material', $this->lang->line('select_valid_file_format').' Ex: jpg, jpeg, png, gif, doc, docx, pdf, ppt, pptx, xls, txt');
return FALSE;
}
}
}
/*****************Function _get_posted_material_data**********************************
* @type : Function
* @function name : _get_posted_material_data
* @description : Prepare "Material" user input data to save into database
*
* @param : null
* @return : $data array(); value
* ********************************************************** */
private function _get_posted_material_data() {
$items = array();
$items[] = 'school_id';
$items[] = 'class_id';
$items[] = 'subject_id';
$items[] = 'title';
$items[] = 'description';
$data = elements($items, $_POST);
if ($this->input->post('id')) {
$data['modified_at'] = date('Y-m-d H:i:s');
$data['modified_by'] = logged_in_user_id();
} else {
$data['status'] = 1;
$data['created_at'] = date('Y-m-d H:i:s');
$data['created_by'] = logged_in_user_id();
}
if (isset($_FILES['material']['name'])) {
$data['material'] = $this->_upload_material();
}
return $data;
}
/*****************Function _upload_material**********************************
* @type : Function
* @function name : _upload_material
* @description : Process "Material" file upload to server and
* return file to store into database
* @param : null
* @return : $return_material string value
* ********************************************************** */
private function _upload_material(){
$prev_material = $this->input->post('prev_material');
$material = $_FILES['material']['name'];
$material_type = $_FILES['material']['type'];
$return_material = '';
if ($material != "") {
$destination = 'assets/uploads/material/';
$file_type = explode(".", $material);
$extension = strtolower($file_type[count($file_type) - 1]);
$material_path = 'material-'.time() . '-gsms.' . $extension;
move_uploaded_file($_FILES['material']['tmp_name'], $destination . $material_path);
// need to unlink previous material
if ($prev_material != "") {
if (file_exists($destination . $prev_material)) {
@unlink($destination . $prev_material);
}
}
$return_material = $material_path;
} else {
$return_material = $prev_material;
}
return $return_material;
}
/*****************Function delete**********************************
* @type : Function
* @function name : delete
* @description : delete "Material" from database
*
* @param : $id integer value
* @return : null
* ********************************************************** */
public function delete($id = null) {
check_permission(DELETE);
if(!is_numeric($id)){
error($this->lang->line('unexpected_error'));
redirect('academic/material/index');
}
$material = $this->material->get_single('study_materials', array('id' => $id));
if ($this->material->delete('study_materials', array('id' => $id))) {
$class = $this->material->get_single('classes', array('id' => $material->class_id, 'school_id'=>$material->school_id));
create_log('Has been deleted a material : '. $material->title.' for class:'. $class->name);
// delete material file
$destination = 'assets/uploads/';
if (file_exists( $destination.'/material/'.$material->material)) {
@unlink($destination.'/material/'.$material->material);
}
success($this->lang->line('delete_success'));
} else {
error($this->lang->line('delete_failed'));
}
redirect('academic/material/index/'.$material->class_id);
}
}