Php 如何在雄辩的插入中明确书与作者的关系？

我正在研究如何使用Laravel4插入hasMany条目

Author.php模块

class Author extends  Eloquent //\LaravelBook\Ardent\Ardent 

{

}

php模块

class Book extends  Eloquent //\LaravelBook\Ardent\Ardent 

{

我的控制器

$r= new Book();

                $r->title       =   Input::get('title');
                $r->authors     =   Input::get('authors');
                $r->affiliation =   Input::get('affiliation');
                $r->keywords    =   Input::get('keywords');
                $r->summary     =   Input::get('summary');

                $r->save();
                $authors = new Author();
                $authors_array = array(
                    array('name' => 'Arun1' , 'affiliation' => 'aff_arun'),
                    array('name' => 'Arun2' , 'affiliation' => 'aff_arun'),
                    array('name' => 'Arun3' , 'affiliation' => 'aff_arun3'),
                    array('name' => 'Arun4' , 'affiliation' => 'aff_arun'),
                    );


                $authors->book()->associate($r);                    



                $authors->save($authors_array);

---

我在authors表中得到一条空记录，它指向这本书，另外3条记录我在这里插入时没有指向这本书。

首先，我认为这是错误的模式，因为可能一个作者可以写多本书

因此，我建议您为此定义多对多（

belongtomany

）关系

无论如何，以下是您问题的解决方案：

// I wonder why you call the book $r ?
$r = new Book;
...
$r->save();

$authors_array = array(...);

foreach ($authors_array as $author)
{
   $r->author()->save(new Author($author)); 
   // you need $fillable/$guarded on Author model or it will throw MassAssignementException
}

另一个建议是：将关系重命名为

authors

，这样它就有意义了，而且您不会发现自己试图将其视为单个模型（尽管它总是返回集合）

$r= new Book();

                $r->title       =   Input::get('title');
                $r->authors     =   Input::get('authors');
                $r->affiliation =   Input::get('affiliation');
                $r->keywords    =   Input::get('keywords');
                $r->summary     =   Input::get('summary');

                $r->save();
                $authors = new Author();
                $authors_array = array(
                    array('name' => 'Arun1' , 'affiliation' => 'aff_arun'),
                    array('name' => 'Arun2' , 'affiliation' => 'aff_arun'),
                    array('name' => 'Arun3' , 'affiliation' => 'aff_arun3'),
                    array('name' => 'Arun4' , 'affiliation' => 'aff_arun'),
                    );


                $authors->book()->associate($r);                    



                $authors->save($authors_array);

// I wonder why you call the book $r ?
$r = new Book;
...
$r->save();

$authors_array = array(...);

foreach ($authors_array as $author)
{
   $r->author()->save(new Author($author)); 
   // you need $fillable/$guarded on Author model or it will throw MassAssignementException
}