Throw exception for recursive parent Breadcrumb reference

[emilas44]

Let's say someone makes a mistake and instead of this:

Breadcrumbs::for('users.index', function ($trail) {
    $trail->parent('dashboard');
    $trail->push('Users', route('users.index'));
});

writes this:

Breadcrumbs::for('users.index', function ($trail) {
    $trail->parent('users.index');
    $trail->push('Users', route('users.index'));
});

Can you please throw some error on this.... so that you actually prevent setting the parent to the same thing.

[shengslogar]

Hmm... I'll take a look at some point. Feel free to open a PR if you want to add this yourself. Not at the top of my priority list right now.

[stale[bot]]

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