Question

我与laravel合作。我创建了一个名为CommonUtilities的库类，在该类中，我从多个表中获取数据，但有时在从getPostList方法获取数据时，会返回一些像null这样的数据，例如status。

这是我的代码

namespace post\Libraries;

use DB;
use App\Quotation;
use Illuminate\Http\Request;
use Illuminate\Database\Eloquent\Model;
use post\Libraries\CommonUtilities;

class CommonUtilities extends Model
{
//
    public function getTrainerDetails($t_code = "")
    {
    if (!empty($t_code) && $t_code != "") {
        return DB::table('registered_trainers')
                ->where('registered_trainers.t_code', $t_code)
                ->leftjoin('trainer_experience', 'registered_trainers.t_code', '=', 'trainer_experience.trainer_code')
                ->leftjoin('qualification', 'registered_trainers.t_code', '=', 'qualification.t_code')
                ->first();
    } else {
        return DB::table('registered_trainers')
                ->leftjoin('trainer_experience', 'registered_trainers.t_code', '=', 'trainer_experience.trainer_code')
                ->leftjoin('qualification', 'registered_trainers.t_code', '=', 'qualification.t_code')
                ->get();
    }
}

public function getPostList($tid = "")
{
    if (!empty($tid) && $tid != "") {
        return DB::table('posts')->where('t_id', $tid)
                ->leftjoin('registered_trainers', 'posts.t_id', '=', 'registered_trainers.tid')
                ->orderBy('posts.created_at', 'desc')
                ->get();
    } else {
        return DB::table('posts')
                ->leftjoin('registered_trainers', 'posts.t_id', '=', 'registered_trainers.tid')
                ->orderBy('posts.created_at', 'desc')
                ->get();
    }
}

这里我正在调用getPostList函数以获取所有帖子详细信息

namespace post\Http\Controllers\admin;

use DB;
use Illuminate\Database\Eloquent\Model;
use post\Libraries\CommonUtilities;
use Illuminate\Http\Request;
use post\Http\Controllers\Controller;

class AdminController extends Controller
{
    //
    public function index()
    {
        $commClassObj = new CommonUtilities();
        $postList = $commClassObj->getPostList();
        return view('pages.dashboard',['PostList' => $postList]);
    }
}

，输出为

Collection {#211 ▼
  #items: array:5 [▼
    0 => {#220 ▼
      +"pid": 7
      +"t_id": 7
      +"post_title": "asassda"
      +"post_desc": "asfdsgdsgvx"
      +"file": "xfgdgd.jpg"
      +"status": null
      +"created_at": "2018-11-14 02:23:00"
      +"updated_at": "2018-11-14 02:23:00"
      +"deleted_at": null
      +"ipaddress": "::1"
      +"tid": 7
      +"t_code": "SM4125"
      +"first_name": "test"
      +"last_name": "testing"
      +"email": "test@example.com"
      +"phone1": "9876543210"
      +"phone2": "9876543211"
      +"address": "Lorem ipsum dolor sit amet."
      +"city": "Lorem"
      +"state": "ipsum"
      +"zip": "100001"
      +"password": "asdf"
      +"email_verified": null
      +"verified_by": null
      +"remember_token": "yes"
      +"browser": "Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36"
      +"deactivated_at": null
    }
    1 => {#213 ▶}
    2 => {#216 ▶}
    3 => {#212 ▶}
    4 => {#215 ▶}
  ]
}

laravel CommonUtilities库类将一些数据返回为null

0 个答案: