需要一些帮助将 SQL 查询转换为 Laravel eloquent

Question

我有这个 SQL 查询：

SELECT * FROM books WHERE id IN
(SELECT book_id FROM `author_book` WHERE author_book.author_id IN 
        (SELECT id FROM authors WHERE  self_name like "%ори%" OR father_name LIKE "%ори%" OR family_name LIKE "%ори%"))

有效，但我需要转换为 Laravel eloquent。我试试这个：

DB::select("SELECT * FROM books WHERE id IN "
. "(SELECT book_id FROM `author_book` WHERE author_book.author_id IN "
. "(SELECT id FROM authors WHERE  self_name like '%" . $attributes['search'] . "%' "
. "OR father_name LIKE '%" . $attributes['search'] . "%' "
. "OR family_name LIKE '%" . $attributes['search'] . "%'))");

这可行，但不能使用分页。有人知道吗？

Answer 1

如果你想要Eloquent解决方案，使用whereHas()方法：

Book::whereHas('authors', function($q) use($search) {
    $q->where('self_name', 'like', '%' . $search . '%')
      ->orWhere('father_name', 'like', '%' . $search . '%')
      ->orWhere('family_name', 'like', '%' . $search . '%')
})->get();

如果您正确定义关系，这将起作用。在 Book 模型中：

public function authors()
{
    return $this->belongsToMany(Author::class);
}

并且在 Author 模型中：

public function books()
{
    return $this->belongsToMany(Book::class);
}

需要一些帮助将 SQL 查询转换为 Laravel eloquent

Need some help to convert SQL query to Laravel eloquent

laravel

laravel-eloquent