Membuat Pdf Preview dan Create Pdf file dengan Dompdf

Install composer 

Install composer sebelum menjalankan perintah composer di terminal. jika sudah terinstall perintah composer langsung saja kelangkah berikutnya.

Install dompdf versi 2.0 dengan perintah berikut :

composer require dompdf/dompdf 

dengan hasil file composernya seperti berikut :

{
    "require": {
        "dompdf/dompdf": "^2.0"
    }
}

Setting Applikasi

setelah bserhasil install composer ubah setting $config['composer_autoload'] pada folder aplication/config/config.php 

default : 

 $config['composer_autoload'] = FALSE;

ubah menjadi 

$config['composer_autoload'] =  'vendor/autoload.php';

Cara Menggunakan

kemudian create file di folder aplication/library/ dengan nama Pdf.php dengan isi sebagai berikut : 

<?php defined('BASEPATH') OR exit('No direct script access allowed');

use Dompdf\Dompdf;

use Dompdf\Options;

class Pdf extends Dompdf{

    public $filename;  

    public function __construct(){

        parent::__construct();

               $this->filename = "laporan.pdf";

    }

    protected function ci()

    {

        return get_instance();

    }

    public function createpdf($view, $data = array()){

        $options = new Options();

        $options->setChroot(FCPATH); 

        $options = $this->getOptions(); 

        $options->set(array('isRemoteEnabled' => true));

        $this->setOptions($options);

        $html = $this->ci()->load->view($view, $data, TRUE);

        $this->load_html($html);

        $this->render();

        $pdf_string =   $this->output();

        file_put_contents("pdf/".$this->filename, $pdf_string ); 

    }

    public function previewpdf($view, $data = array()){

        $options = new Options();

        $options->setChroot(FCPATH); 

        $options = $this->getOptions(); 

        $options->set(array('isRemoteEnabled' => true));

        $this->setOptions($options);

        $html = $this->ci()->load->view($view, $data, TRUE);

        $this->load_html($html);

        $this->render();

        $this->stream($this->filename, array("Attachment" => false));

    }

}

?>

buat file controller di ci3 dan halaman view nya untuk digenerate.
untuk create pdf :

$sign =array("datas"=>"ini file pdf");
$file_name = "inifilenya.pdf";

$this->load->library('pdf');
$this->pdf->setPaper('A4', 'potrait');
$this->pdf->filename = $file_name;
$this->pdf->createpdf('file',$sign);

Untuk preview pdf :

$sign =array("datas"=>"ini file pdf");
$this->load->library('pdf');
$this->pdf->setPaper('A4', 'potrait');
$this->pdf->filename = "iniFile.pdf";
$this->pdf->previewpdf("file",$sign);

viewnya beri name file.php dengan isi sebagai berikut :

<?php
echo $datas;
?>