Generate PDF only when entry has changed

[vaelu]

Is there any way to trigger the PDF creation via PHP, for example in a EVENT_AFTER_SAFE? I think of a method which allows passing in a template and returns the asset.

This would be awesome, because the PDF would only generate when a new entry is created or an entry has changed.

[amici-infotech]

Hey @vaelu It is possible yes. All you need to do is to create a custom plugin/module or use "modules/Module.php" file to add EVENT_AFTER_SAVE event. What I would do is:

1. Enable Module.php class from config/app.php
2. Go to Super PDF backend settings and set Default Behaviour to Ignore.
3. Add this code in init method of Module.php (and classes at start of the file.)

NOTE: Use settings, variables and template source file what you have. Make sure you use resaveBehaviour as "override" to generate your PDF.

use yii\base\Event;
use craft\elements\Entry;
use craft\events\ModelEvent;
use craft\helpers\ElementHelper;
use amici\SuperPdf\SuperPdf;

Event::on(Entry::class, Entry::EVENT_AFTER_SAVE, function (ModelEvent $event) {
    if(
        $event->sender->enabled &&
        $event->sender->id &&
        !ElementHelper::isDraft($event->sender) //&&

        // $event->sender->section->id = MY_PDF_SECTION
    ) {
        $template = "_invitaion";
        $settings = [
            'filename' => "My_PDF",
            'dpi' => 150,
            'resaveBehaviour' => 'override',
            'type' => 'object',
        ];

        $vars = [
            'entry' => $event->sender,
        ];

        $view = Craft::$app->getView();
        $mode = $view->getTemplateMode();

        $view->setTemplateMode($view::TEMPLATE_MODE_SITE);
        $ret = SuperPdf::$plugin->pdf->template($template, $settings, $vars);
        $view->setTemplateMode($mode);

        if(! $ret->url) {
            // ERROR. Return error or save log
        } 
    }
});