<?php

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

Breadcrumbs::for('frontend.messages.create', function ($trail, $to=-1) {
    $trail->parent('frontend.messages');
    $trail->push("New message to".($to>0?"to {$to->name}":''), route('frontend.messages.create', $to));
});

Breadcrumbs::for('frontend.messages.show', function ($trail, $thread) {
    $trail->parent('frontend.messages');
    $trail->push("{$thread->subject}", route('frontend.messages.show', $thread));
});