angular 2 route to 404 page when route param is invalid

Question

Say I have an route with a param like this (in Angular 2): /user1/products/:id, which could have child routes like /user1/products/3/reviews.

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Answer 1

Its really interesting question, perhaps you should report it as feature request. I would be nice to have access to router instruction inside loader callback of RouteDefinition.

You could try to emulate validation adding default route /** and using regex parameter of RouteDefinition to match only positive numbers.