我在Web应用程序上使用Bllim/Datatables包来存储数据表;但我无法检索所有相关的行。
我使用以下代码：
$books= $client->books()->where('books.type', 0);
我将其发送到数据表：：的方法如下：
return Datatables::of($books)
->edit_column('type', '{{$type}}')
->edit_column('created_at', function($obj) {
return $obj->created_at->format('d/m/Y (h:i)');
})
->set_index_column('id')
->make();
但所有这些都会返回一个内部服务器错误 （500），并显示以下消息：
{"error":
{
"type":"ErrorException",
"message":"Undefined property: Illuminate''Database''Eloquent''Builder::$columns",
"file":"'/var'/www'/clients'/myapp'/vendor'/bllim'/datatables'/src'/Bllim'/Datatables'/Datatables.php",
"line":256
}
}
我的数据库结构：
create table clients(
id int not null auto_increment,
name varchar(10) not null,
password varchar(60) not null,
unique(name),
primary key(id),
created_at timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
updated_at timestamp NOT NULL DEFAULT now() ON UPDATE now()
)CHARSET utf8 COLLATE utf8_spanish_ci;
/* PIVOT TABLE */
create table book_client(
id int not null auto_increment,
book_id int,
client_id int,
primary key(id),
FOREIGN KEY (book_id ) REFERENCES books(id) ON DELETE CASCADE,
FOREIGN KEY (client_id ) REFERENCES clients(id) ON DELETE CASCADE
)CHARSET utf8 COLLATE utf8_spanish_ci;
create table books(
id int not null auto_increment,
name varchar(50) not null,
description varchar(500),
type varchar(10) not null,
primary key(id),
created_at timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
updated_at timestamp NOT NULL DEFAULT now() ON UPDATE now()
)CHARSET utf8 COLLATE utf8_spanish_ci;
在视图中，我有下一个：
/*In the view of clients*/
public function books(){
return $this->belongsToMany("Book");
}
/*In the view of books: (yes, in my case, a book could belong to multiple clients*/
public function clients(){
return $this->belongsToMany("Client");
}
有人知道我需要的制作方法吗？
你需要使用下一句话：
/* The client whose ID is 1*/
$client = Client::find(1);
$client->books()
->getQuery()
->getQuery()
->select(array('id', 'ColumnA', 'ColumnB'));
您也可以使用where clausule：
$client->books()
->getQuery()
->getQuery()
->select(array('id', 'ColumnA', 'ColumnB'))
->where('id','=',1);
请注意，我使用了两次getQuery()，这是因为Bllim/Datatables需要一个Query/Builder对象。