Now Laravel7 is having route model binding improvement

when implicitly binding multiple Eloquent models in a single route definition, you may wish to scope the second Eloquent model such that it must be a child of the first Eloquent model.

Laravel 7 will automatically scope the query to retrieve the nested model by its parent using conventions to guess the relationship name on the parent

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Whats new in Laravel 7 - Route Model Binding Improvement
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