Dompdf and imageTag helper

[item]

Hi,
situation :
i create qrCode with Endroid\QrCode library (github)
the result 'image/png' is saved as Attachment.

when try to print-to-pdf :
if engine is :
- dompdf : no result
- tcpdf : qrcode is printed.

so my solution was to create a new template helper "imageTagInline":
see doc how make a custome pdf helper.

certainly need more "control/throw error" but the base is here.
Just, we can create attachment with : 'contents' => $contents,
but we can't get the contents.. so it's why i use FileManager

<?php

namespace Espo\Custom\TemplateHelpers;

use Espo\Core\ORM\EntityManager;
use Espo\Core\Utils\Log;
use Espo\Core\Utils\File\Manager as FileManager;

use Espo\Core\Htmlizer\Helper;
use Espo\Core\Htmlizer\Helper\Data;
use Espo\Core\Htmlizer\Helper\Result;

class ImageTagInline implements Helper
{
    public function __construct(
        private EntityManager $em,
        private Log $log,
        private FileManager $fileManager,
    ){}

    public function render(Data $data): Result
    {        
        $idAttachment = $data->getArgumentList()[0] ?? '';
        $attachment = $this->em->getEntityById('Attachment', $idAttachment);

        $width = $color = $data->getOption('width');
        $height = $data->getOption('height');

        $attributesPart = "";

        if ($width) {
            $attributesPart .= " width="" .strval($width) . """;
        }

        if ($height) {
            $attributesPart .= " height="" .strval($height) . """;
        }

        //$contents = $attachment->get('contents'); DON'T WORK AS CREATE ATTACHMENT
        $contents =  $this->fileManager->getContents('data/upload/' .$idAttachment);
        $type = $attachment->getType();
        $image = base64_encode( $contents );

        $html = "<img src="data:{$type};base64,{$image}"{$attributesPart}>";

        return Result::createSafeString($html);
    }
}​

[rabii]

Hey item

You could use the attachment service to get the file content like below:

<?php

namespace Espo\Custom\TemplateHelpers;

use Espo\Core\ORM\EntityManager;
use Espo\Core\Utils\Log;
use Espo\Core\Utils\File\Manager as FileManager;

use Espo\Core\Htmlizer\Helper;
use Espo\Core\Htmlizer\Helper\Data;
use Espo\Core\Htmlizer\Helper\Result;
use Espo\Core\InjectableFactory;

// Use This service to get the file content
use Espo\Tools\Attachment\Service;

class ImageTagInline implements Helper
{
    public function __construct(
        private EntityManager $em,
        private Log $log,
        private FileManager $fileManager,
        private InjectableFactory $injectableFactory,
    ){}

    public function render(Data $data): Result
    {        
        $attachmentId = $data->getArgumentList()[0] ?? '';
        $attachment = $this->em->getEntityById('Attachment', $attachmentId);

        $width = $color = $data->getOption('width');
        $height = $data->getOption('height');

        $attributesPart = "";

        if ($width) {
            $attributesPart .= " width="" .strval($width) . """;
        }

        if ($height) {
            $attributesPart .= " height="" .strval($height) . """;
        }

        $service = $this->injectableFactory->create(Service::class);

        try {

            $fileData = $service->getFileData($attachment->getId());
        }
        catch (Exception $e) {
            $message = $e->getMessage();
            $this->log("Error while getting. Content: {$message}." , 'error');

            return false;
        }

        $image = base64_encode($fileData->getStream());
        $type = $attachment->getType();

        $html = "<img src="data:{$type};base64,{$image}"{$attributesPart}>";

        return Result::createSafeString($html);
    }
}​

[yuri]

No need to use InjectableFactory when a class can be injected via constructor. The Attachment/Service is not a right choice here.

[yuri]

To read an attachment content, use Espo\Core\FileStorage\Manager.

[item]

Thanks Yuri, thanks Rabii.

<?php

namespace Espo\Custom\TemplateHelpers;

use Espo\Core\ORM\EntityManager;
use Espo\Core\Utils\Log;
use Espo\Core\FileStorage\Manager as FileStorageManager;

use Espo\Core\Htmlizer\Helper;
use Espo\Core\Htmlizer\Helper\Data;
use Espo\Core\Htmlizer\Helper\Result;

class ImageTagInline implements Helper
{
    public function __construct(
        private EntityManager $em,
        private Log $log,
        private FileStorageManager $fileStorageManager,
    ){}

    public function render(Data $data): Result
    {        
        $attachmentId = $data->getArgumentList()[0] ?? '';
        $attachment = $this->em->getEntityById('Attachment', $attachmentId);

        if (!$attachment) {
            return Result::createSafeString('Attachment Not Found.');
        }

        $width = $data->getOption('width');
        $height = $data->getOption('height');

        $attributesPart = "";

        if ($width) {
            $attributesPart .= " width="" .strval($width) . """;
        }

        if ($height) {
            $attributesPart .= " height="" .strval($height) . """;
        }

        $contents = $this->fileStorageManager->getContents($attachment);
        $type = $attachment->getType();
        $image = base64_encode( $contents );

        $html = "<img src="data:{$type};base64,{$image}"{$attributesPart}>";

        return Result::createSafeString($html);
    }
}​