How can Laravel Scout (Meilisearch driver) be utilized for intricate relational searches?

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Laravel Scout (Meilisearch driver) can be utilized for intricate relational searches by utilizing the Eloquent ORM's relationship methods. The key is to set up the relationships between the models correctly.

For example, suppose you have three models; User, Post, and Comment, where a user can have many posts, and a post can have many comments. In that case, you can set up the relationships as follows:

// User Model
class User extends Model
{
    public function posts()
    {
        return $this->hasMany(Post::class);
    }
}

// Post Model
class Post extends Model
{
    public function comments()
    {
        return $this->hasMany(Comment::class);
    }

    public function user()
    {
        return $this->belongsTo(User::class);
    }
}

// Comment Model
class Comment extends Model
{
    public function post()
    {
        return $this->belongsTo(Post::class);
    }
}

With this setup, you can use Laravel Scout to perform intricate relational searches by chaining the relationship methods in your search query. For example, to search for all posts that a user has commented on, you can use the following code:

$userId = 1;

$posts = Post::search('query')
    ->whereHas('comments', function ($query) use ($userId) {
        $query->where('user_id', $userId);
    })
    ->get();

This will return all posts that have comments where the user ID matches the given user ID.

Similarly, you can perform other intricate relational searches with Laravel Scout by chaining the appropriate relationship methods in your search query.