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CI 4 pagination problem

#1
How do I paginate only selected items from a table.

Controller:

PHP Code:
<?php 

namespace App\Controllers;

use 
CodeIgniter\Controller;

class 
Pageusersselect extends Controller
{        
    
public function showusers()
    {
        $Body['title'] = 'Dzielenie wybranych użytkowników na strony';
        
        $pager 
= \Config\Services::pager();
                
        $model 
= new \App\Models\ShowuserselectModel();
        
        $Body
['users'] = $model->PaginateUsers(10);
        $Body['pager'] = $model->pager;
        
        
echo view('showuser/index'$Body);
    }
}

?>

Model:
PHP Code:
<?php 

namespace App\Models;

use 
CodeIgniter\Model;

class 
ShowuserselectModel extends Model
{
    protected $table 'users';
    protected $primaryKey 'id';
    
    
public function PaginateUsers($HowMany)
    {
        $sql "SELECT * FROM users WHERE name LIKE '%n'";
        $Result $this->db->query($sql);
        $Result2 $Result->getRowArray();
        return $Result2;
    }
}

?>

View
PHP Code:
<!doctype html>
<
html lang="pl">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no" />
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous" />
    <title><?php echo $title?></title>
    <style>
    ul.pagination li 
    {
        margin-left: 5px;
        margin-right: 5px;
    }
    </style>
  </head>
  <body>
    
    <div class="container">
      <div class="row">
        <div class="col-sm-1">
        </div>
        <div class="col-sm-10">
          
        <h1><?php echo $title?></h1>
        
        <table class="table table-bordered">
        <thead>
          <tr>
            <th>ID</th>
            <th>Name</th>
            <th>Address</th>
            <th>City</th>
            <th>Date</th>
            <th>Personal number</th>
          </tr>
        </thead>
        <tbody>
          <?php 
          
if(isset($users))
          {
              foreach($users as $user)
              {
                  echo '<tr>
                    <td>'
.$user['id'].'</td>
                    <td>'
.$user['name'].'</td>
                    <td>'
.$user['address'].'</td>
                    <td>'
.$user['city'].'</td>
                    <td>'
.$user['date'].'</td>
                    <td>'
.$user['personalnumber'].'</td>
                  </tr>'
;
              }
          }
          ?>
        </tbody>
      </table>

      <!-- Pagination -->
      <div class="d-flex justify-content-end">
        <?php if(isset($pager))
        {
            $pager->setPath('pageusersselect');
            echo $pager->makeLinks($page10$TotalRows)
            //echo $pager->links();
        }
        ?>
      </div>

      
        </div>
        <div class="col-sm-1">
        </div>
      </div>
    </div>
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script>
  </body>
</html> 

Zawsze dostaję błąd: Illegal string offset 'id' w widoku.
Reply

#2
I also had problems at first and I ended up doing this.

The code should give you an idea of how to do it, you will notice I am returning $this
so that we can use method chaining.

Don't worry about the group stuff it's because I have custom bootstrap pager templates.

PHP Code:
    // CONTROLLER
    
    
<?php namespace App\Controllers;

use 
App\Models\AuthorModel;
use 
Config\Services;

/**
 * Class Home
 *
 * @package App\Controllers
 */
class Home extends BaseController
{
    private 
$author;

    public function 
index()
    {
        
$pager Services::pager();

        
$this->author = new AuthorModel();
        
        
// This will get all Authors
        
$data = [
            
'authors' => $this->author->getAllAuthors()->paginate(4'group1'),
            
'pager'   => $this->author->pager,
        ];

        echo 
view('test'$data);

        
// This will get all authors by category id
        
$dat = [
            
'authors' => $this->author->getAuthorsByCategory(14)->paginate(4'group1'),
            
'pager'   => $this->author->pager,
        ];

        
//echo view('test', $dat);

        //return view('welcome_message');

    
}

    
//--------------------------------------------------------------------

}
    
// MODEL
    
    // -------------------------------------------------------------------

    /**
     * getAuthors ()
     * -------------------------------------------------------------------
     *
     * Get all authors
     */
    
public function getAuthors()
    {
        
$builder $this->builder();

        
$builder->orderBy('id''ASC');
        
$builder->get();
        
        return 
$this;
    }

    
// -------------------------------------------------------------------

    /**
     * getAuthorsByCategory ()
     * -------------------------------------------------------------------
     *
     * Get all authors by category
     */
    
public function getAuthorsByCategory(int $id)
    {
        
$builder $this->builder();

        
$builder->where('category_id'$id);

        return 
$this;
    }

    
//--------------------------------------------------------------------

    // VIEW
    
    
<!DOCTYPE html>
<
html lang="en">

<
head>

    <
meta charset="UTF-8">

    <
title>Title</title>

    <
link href="<?= base_url('assets/vendor/bootstrap/css/bootstrap.min.css');?>" rel="stylesheet">

</
head>

<
body>

    <
div class="container-fluid">
    <?
php

    
foreach ($authors as $key => $list)
    {
        
//echo $key."<br>";
        
echo $list['id']."<br>";
        echo 
$list['category_id']."<br>";
        echo 
$list['first_name']."<br>";
        echo 
$list['last_name']."<br>";
        echo 
$list['email']."<br>";
        echo 
$list['birthdate']."<br>";
        echo 
$list['added']."<br><br>";
    }

    echo 
$pager->simpleLinks('group1''bs_simple');

    
//echo $pager->makeLinks($page, $perPage, $total, 'bs_simple');

    
?>

    </div>

    <script href="<?= base_url('assets/vendor/jquery/jquery-3.5.1.min.js');?>"></script>
    <script href="<?= base_url('assets/vendor/bootstrap/js/bootstrap.bundle.min.js');?>"></script>

</body>
</html> 

This works like a charm for me.
What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )
Reply

#3
Thank you, it also worked for me. I'm just wondering how to do it by writing SQL queries?
Reply

#4
Just run the queries and than return $this

Which allows you to chain on the paginate method.

So:


PHP Code:
$data['test'] = $model->yourQuery->paginate(10); 

Don't tell your model methods to return any object or array the paginate uses the find method to
return everything.
What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )
Reply

#5
With Query, you can
1. Get current page: $curPage = $pager->getCurrentPage();
2. In your query, use LIMIT: LIMIT $curPage * $perPage, $perPage

Learning CI4 from my works, from errors and how to fix bugs in the community

Love CI & Thanks CI Teams

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