做项目遇到个需求，需要对结果集中的数据进行指定规则的顺序排列。
例如，用户状态有四种：
0=>未激活；1=>正常；2=>禁用；3=>软删除
现在的需求是，我要按照：正常->未激活->禁用->删除；这个顺序来进行排序，同时按照注册时间降序，网上查了很多资料，国内提到这个的很少，在stackOverFlow上找到了答案！
先上解决方案：
public function index($customer_type = null) {
$search = request('search');
$perPage = request('perPage') ? request('perPage') : 10;
$customer_type = $customer_type ? $customer_type : request('customer_type');
// \DB::enableQueryLog();
$data = Customer::select(['id', 'email', 'user_name', 'nick_name', 'status', 'phone', 'create_time'])
->where('customer_type', '=', $customer_type)
->where(function ($query) use ($search) {
if ($search) {
$query->where('user_name', 'like binary', '%' . $search . '%')
->orWhere('nick_name', 'like binary', '%' . $search . '%')
->orWhere('phone', 'like binary', '%' . $search . '%')
->orWhere('email', 'like binary', '%' . $search . '%');
}
})
->orderByRaw("FIELD(status, " . implode(", ", [1, 2, 0, 3, 4]) . ")")
->orderBy('create_time', 'desc')
->paginate($perPage);
// $query = \DB::getQueryLog();
// dd($data);
//追加额外参数，例如搜索条件
$appendData = $data->appends(array(
'search' => $search,
'perPage' => $perPage,
));
return view('admin/customer/customerList', compact('data'));
}
打印出来的sql语句如下：
参考了以下链接：
https://stackoverflow.com/questions/42068986/laravel-weird-behavior-orderbyrawfield
https://stackoverflow.com/questions/34244455/how-to-use-not-find-in-set-in-laravel-5-1
https://stackoverflow.com/questions/35594450/find-in-set-in-laravel-example/35594503
find_in_set 复杂应用：
public function get_teacher_list($timeType, $name, $perPage = 10, $personality = 0, $teachingStyle = 0, $ageType = 0)
{
// \DB::enableQueryLog();
$result_data = DB::table('teacher_info as ti')
->select('ti.*')
->join('customer', 'customer.id', '=', 'ti.customer_id')
->where(function ($query) use ($personality) {
if (trim($personality)) {
$query->whereRaw("find_in_set($personality,ti.label_ids)");
}
})
->where(function ($query) use ($teachingStyle) {
if (trim($teachingStyle)) {
$query->whereRaw("find_in_set($teachingStyle,ti.label_ids)");
}
})
->where(function ($query) use ($ageType) {
if (trim($ageType)) {
$ageType = explode('-', $ageType);
$query->whereRaw("DATE_FORMAT(FROM_DAYS(TO_DAYS(NOW())-TO_DAYS(birthday)), '%Y')+0 between $ageType[0] and $ageType[1]");
}
})
->where(function ($query) use ($timeType) {
//1本周，2下周
if ($timeType == 1) {
$query->where('ti.can_appointment_1', 1);
} elseif ($timeType == 2) {
$query->where('ti.can_appointment_2', 1);
} else {
$query->where('ti.can_appointment_1', '>', 0)
->orWhere('ti.can_appointment_2', '>', 0);
}
})
->where(function ($query) use ($name) {
if (trim($name)) {
$query->where('ti.chinese_name', 'like', '%' . $name . '%')
->orWhere('ti.english_name', 'like', '%' . $name . '%');
}
})
->where('ti.status', 1)
->orderBy('ti.total_teach_num', 'desc')
->orderBy('ti.total_star_num', 'desc')
->orderBy('ti.satisfaction', 'desc')
->orderBy('ti.comment_num', 'desc')
->orderBy('ti.english_name', 'asc')
->paginate($perPage);
// dd($result_data, \DB::getQueryLog());
return $result_data;
}
专门拿出来看一下:
$ids = array(1,17,2);
$ids_ordered = implode(',', $ids);
$items = User::whereIn('id', $ids)
->orderByRaw(DB::raw("FIELD(id, $ids_ordered)"))
->get();
转载：https://blog.csdn.net/zhezhebie/article/details/78357354
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