Added possibility to send custom params to mailer

[mikoczy]

No description provided.

[rootpd]

@mikoczy Where those custom_params should be coming from?

[mikoczy]

from the scenarios dispatcher, like this for example:

$this->dispatcher->dispatch('code', $subscription->user_id, [
    'subscription_id' => $subscription->id,
    'custom_params' => [
        'key1' => 'value1',
        'key2' => 'value2',
    ],
]);

[mikoczy]

@rootpd what do you think? It would be nice, if the trigger could somehow tell the user, which variables are available to use (not only custom params, but if it is a subscription trigger, user trigger, etc.).

[rootpd]

@mikoczy we were thinking about something more complex, that would also include inter-node validation - so that you won't be able to use condition node with condition that cannot be executed because of the type of trigger that got you there.

So I'd rather wait for that implementation instead of adding temporary solution that would have to be removed later on. I think that that is something we'll work on right after we finish working on "before triggers" (e.g. "5 days before end of subscription").