laravel如何匹配路由优先级

Question

Case 1: web.php:

Route::get('foo/{id}', function () {
    return 'Route 1';
});
Route::get('foo/bar', function () {
    return 'Route 2';
});
Route::get('foo/bar', function () {
    return 'Route 3';
});

When I browse to localhost/foo/bar I got Route 1 which correct since the url match the first route.

Case 2: web.php:

Route::post('foo/{id}', function () {
    return 'Route 1';
});
Route::get('foo/bar', function () {
    return 'Route 2';
});
Route::get('foo/bar', function () {
    return 'Route 3';
});

When I browse to localhost/foo/bar I got Route 3.

My question is why i got Route 3 intead of Route 2. Isn't logical to get Route 2 since the url match the second route first?! Why does Laravel continue to match the routes after match is found (route 2 in my case)?

Answer 1

The second foo/bar route overrides the first, because the HTTP Method and URI are the same.

The HTTP Method + URI combo acts as a primary key for a route. The combination of the two have to be unique - you can't have two different destinations for the same route.

So, Laravel takes a "last in, first out" approach, where any previous definition (e.g. "Route 2") is overwritten. You can confirm this by running php artisan route:list in the command line to see what route definitions Laravel will actually attempt to match.