'required_if' validation alongside database check in Laravel 5

I am implementing a survey builder with several allowed question types. These types are:

1. Single choice
2. Multiple choice
3. Star rating

The 1. and 2. require multiple possible answers to be given by a user, whereas the 3. does not require any possible answers at all. These requirements are stored as true / false values in question_types.multiple_answers column.

I need a validation rule, that will:

require answers[] array to be present in the request, only if the selected question_type's corresponding multiple_answers value is set to true in the database.

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Here is an illustration of what I'm trying to achieve:

...->validate($request, [
    'answers' => 'require_if:type,...' // <-- if 'type' has 'multiple_answers' set to true in database
]);

via Chebli Mohamed