Related posts in Laravel

laravel-related-posts.php

<?php

// Related posts example 1

// get a single post object
$post = Post::with('categories', 'categories.posts')->find(42);

// need a single category to grab the posts for
foreach($post->categories as $category)
{
    // This should be what you want
    var_dump($category->posts);
}

// Related posts example 2
$post->load(['categories.posts', function ($q) use ( &$relatedPosts, $post) {
    $relatedPosts = $q->where('id', '<>', $post->id)->get()->unique();
}]);

$relatedPosts; // your collection

// Related posts example 3
$categories = $post->categories->modelKeys();
$relatedPosts = Post::whereHas('categories', function ($q) use ($categories) {
    $q->whereIn('categories.id', $categories);
})->where('id', '<>', $post->id)->get();