在上面的代码中,"getCustomDateAttribute"方法将自定义日期字段的值进行格式化,并返回格式为"Y-m-d"的日期字符串。 接下来,在查询构建器中使用"orderBy"方法来按照自定义日期字段进行排序。假设我们要按照"custom_date"字段降序排序: 代码语言:php 复制 $orders=Order::orderBy('custom_date','desc')->get();...
分页器的使用方式不正确:在使用分页器时,需要确保orderBy语句位于查询语句之前,以确保正确的排序。例如,以下代码展示了正确的使用方式: 代码语言:txt 复制$items = DB::table('table_name') ->orderBy('date_column', 'desc') ->paginate(10); 查询语句中的日期字段不正确:确保orderBy语句中的日期字段...
自定义属性custom_date,返回return date('Y-m-d', intval($value)); 当我需要返回指定格式的日期时,我就在对应的model,设置属性为custom_date就可以了。 <?phpnamespace App\Model;use App\Library\Utility;use Illuminate\Database\Eloquent\Model;class CustomModel extends Model{...protected function castAtt...
function ($query) use ($opts) { switch ($opts['timeOrder']){ case 1: return $query->orderBy('indate','asc'); break; case 2: return $query->orderBy('indate','desc'
use App\Models\Destination; use App\Models\Flight; return Destination::addSelect(['last_flight' => Flight::select('name') ->whereColumn('destination_id', 'destinations.id') ->orderByDesc('arrived_at') ->limit(1) ])->get();Subquery OrderingIn addition, the query builder's orderBy ...
字段,否则数据查询不到,如本例(device_id,device_field_id) 如:$query->select("device_id,device_field_id")$query->selectRaw("DATE_FORMAT(created_at, '%Y-%m-%d %H:%i') as date, id,device_id,device_field_id,name,created_at");$query->groupBy('date');$query->orderBy('date', 'desc...
// ->orderBy('id', 'desc') // ->first(); // dd($student); //where() // $students = DB::table('student') // ->where('id', '>=', 1002) // ->get(); // $students = DB::table('student') // ->whereRaw('id >= ? and age > ?', [1001, 18]) ...
$users = App\User::with(['posts' => function ($query) { $query->orderBy('created_at', 'desc'); }])->get();Lazy Eager LoadingSometimes you may need to eager load a relationship after the parent model has already been retrieved. For example, this may be useful if you need to ...
orderByFollowersCount(string $direction = 'desc') example: $users= User::orderByFollowersCountDesc()->get();$mostPopularUser= User::orderByFollowersCountDesc()->first(); N+1 issue To avoid the N+1 issue, you can use eager loading to reduce this operation to just 2 queries. When query...
http://prettus.local/users?orderBy=name;created_at&sortedBy=descResult will have something like this[ { "id": 1, "name": "Laravel", "created_at": "-0001-11-29 00:00:00" }, { "id": 3, "name": "Laravel", "created_at": "-0001-11-28 00:00:00" }, { "id": 2, "...