ldc-mesbr-app/app/Http/Controllers/ExportController.php

<?php

namespace App\Http\Controllers;

use App;
use CpChart\Data;
use CpChart\Image;
use App\Traits\CouponTrait;
use App\Traits\GraphTrait;
use App\Site;
use App\Coupon;
use App\Http\Requests\Export\PDFExport;
use Datetime;
use Illuminate\Http\Request;

class ExportController extends Controller
{
    use CouponTrait;
    use GraphTrait;

    /**
     * Handle the incoming request.
     *
     * @param  \Illuminate\Http\Request $request
     * @return \Illuminate\Http\Response
     */
    public function show(Request $request)
    {
        $sites     = Site::all();
        $startdate = new DateTime("first day of last month");
        $startdate = $startdate->format('Y-m-d');
        $enddate   = date('Y-m-d');

        return view('export.index')->with(['sites' => $sites, 'startdate' => $startdate, 'enddate' => $enddate]);
    }

    // ------ AJAX Export
    public function exportCoupons(PDFExport $request)
    {
        $ids = $request->ids;
        $startdate = $request->startdate;
        $enddate = $request->enddate;

        $coupons   = Coupon::find($ids);

        $labels = $this->getLabelsForStats($startdate, $enddate);

        $paths = array();

        foreach ($coupons as $coupon) {
            $cpName                    = str_replace(' ', '', $coupon->coupon_name);
            $full_path                 = 'export/' . $cpName . '_' . date('d_m_Y') . '.pdf';
            $dataCoupon                = $this->getDataForCouponAllCamp($labels, $coupon);
            $coupon->couponQuantity    = $this->getFullQuantity($coupon);
            $coupon->couponFullPrinted = $this->getUsedQuantity($coupon);
            $coupon->couponPrinted     = $this->getUsedQuantityOnPeriod($coupon, $startdate, $enddate);

            $pdf = App::make('dompdf.wrapper');

            $myData = new Data();

            $myData->addPoints($dataCoupon, "My Serie 1");
            $myData->addPoints($labels, "My Serie 2");
            $myData->setAxisName(0, "Coupons Diffusés");
            $myData->setAbscissa("My Serie 2");
            $myData->setSerieTicks("My Serie 2", 2);
            $serieSettings = array("R" => 229,"G" => 11,"B" => 11);
            $myData->setPalette("My Serie 1", $serieSettings);
            $myPicture = new Image(700, 230, $myData);
            $myPicture->setGraphArea(60, 40, 670, 190);
            $myPicture->setFontProperties(array("FontSize" => 10));
            $myPicture->drawScale(array("DrawSubTicks" => true, 'LabelSkip' => 1, 'LabelRotation' => 25, "Mode" => SCALE_MODE_START0, "CycleBackground" => true,"GridR" => 102,"GridG" => 102,"GridB" => 102));
            $myPicture->setShadow(true, array("X" => 1,"Y" => 1,"R" => 0,"G" => 0,"B" => 0,"Alpha" => 10));
            $myPicture->drawLineChart(array("DisplayColor" => DISPLAY_AUTO));
            $myPicture->Render('export/temp.png');

            $view = view('export.template')->with(['src' => 'export/temp.png', 'coupon' => $coupon, 'startdate' => $startdate, 'enddate' => $enddate])->render();

            $pdf->loadHTML($view);
            $pdf->save($full_path);
            array_push($paths, $full_path);
        }//end foreach

        return json_encode($paths);
    }
}