在laravel 5.1中加入表格

Question

我有问题，我不能加入表，为什么错了？你能救我吗？

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public function getIndex()
	{	
		$posts = DB::table("users")
		->orderBy('id', 'desc')
		->select("users.id","users.created_at","companies.name as nama_companies","users.privilege_type","users.name","users.name","users.email","users.password")
		->join("companies","companies.created_at","=","users.id_kategori","companies.photo")	
		->paginate(5);	
		
		return view('users',['posts'=>$posts]);
	}

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请帮助我，谢谢

Answer 1

试试此代码

$posts = User::join('companies', 'companies.name', '=', 'users.name') ->orderBy('user.id', 'desc') ->select(array("users.id","users.created_at","companies.name as nama_companies","users.privilege_type","users.name","users.name","users.email","users.password"))->paginate(5);

Answer 2

查看https://laravel.com/docs/5.1/queries#joins

上的文档

例如，用条件和运算符替换方括号。

->join("companies", "id_companies", "=" , "companies.id")

您的代码看起来像..

$posts = DB::table("users")
         ->select("users.id",
                  "users.created_at",
                  "companies.name as nama_companies",
                  "users.privilege_type",
                  "users.name",
                  "users.email",
                  "users.password")
           ->join("companies", [ ColumnName ], [Condition] , [ColumnName])  //replace square brackets.. 
           ->orderBy('id', 'desc')
           ->paginate(5);