Inject variables into header.tpl for delivery-slip

[TempleClause]

Hey there,

Using prestashop 8. 

I wrote a module that assigns data for the delivery-slip pdf. 
Something like this:

    public function hookDisplayPDFDeliverySlip($hookArgs)
    {
        $hookArgs['object']->my_param = "hello world";
    }

But now I would also need some params in the header.tpl. 

What have I tried:
   

 public function hookDisplayPDFDeliverySlip($hookArgs)
    {
        $this->context->smarty->assign([
            'test1234' => 'hello world test1234',
        ]);
    }

But this `test1234` variable is not available in `header.tpl` nor in `delivery-slip.tpl`.

What other solutions i have thought about:
- Override the `HTMLTemplate.php` file to add custom logic. I would rather not like to do that because updates will become hard
- Create my own pdf generator like described here: https://devdocs.prestashop-project.org/8/modules/concepts/pdf/#code-example. Would be very overkill and I would need to basically copy the existing delivery slip generator and just modify slightly. Again it would be hard to update.

What's the recommended approach for this problem? 

Thanks! 

[TempleClause]

Finally found a solution. I realised that smarty is also passed as an argument so you can do this:

 

    public function hookDisplayPDFDeliverySlip($hookArgs)
    {
        $smarty = $hookArgs['smarty'];
        $smarty->assign('test1234', "hello world");
	}

this variable will than be available both in `delivery-slip.pdf` and `header.tpl`

[Divine]

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