Laravel是一种流行的PHP开发框架,用于构建Web应用程序。在Laravel中,要求数据库中的if为null是指在数据库查询中,判断某个字段的值是否为null。 在Laravel中,可以使用以...
Is there an way too accomplish this with laravel 11 i have this in laravel10 RedirectifAuthenticated middleware file? ' public function handle($request, Closure $next, $guard = null) { // if (Auth::guard($guard)->check()) { // return redirect(RouteServiceProvider::HOME); // } ...
-n "$para1"] then echo "is null" else echo "not null" fi 2.直接通过变量判断...
@unless(Auth::check()) You are not signed in.@endunless 此外,Blade 还提供了@isset和@empty指令,分别对应 PHP 的isset和empty方法: @isset($records)// $records is defined and is not null...@endisset@empty($records)// $records is "empty"...@endempty 认证指令 @auth和@guest指令可用于快速...
Laravel |过滤关联数组中的空值 代码从top-level数组中删除null值。您的“期望结果”从嵌套数组中删除null值。 请尝试以下操作: foreach ($myarray as $key => $value) { if (is_null($key) || !is_array($value)) { continue; } $myarray[$key] = array_filter($value);} 为什么“AND NOT field...
laravel学习过程中遇到的问题(一) laravel5.5学习报错截图Syntaxerroror accessviolation: 1055 (错误代码)解决办法 将config中的database.php文件中的严格模式改为false即可! 如果报异常, multi-statement not allow 首先在配置文件里加 :
删除Laravel中的重复代码-优化 $user = User::where('id', $id) ->with('voucherUtilizations.voucher') ->with(['voucherUtilizations', function ($query) use($campaignId, $date_from, $date_to) { $query->when(!empty($campaignId), function ($q1) use ($campaignId) { return $q1->where...
尝试使用if(！Auth：：guard('mobile')->attempt($credentials))在Laravel中创建非默认保护的凭据如果你...
// Avoiding duplicate queries when checking if relationship exists Laravel 5 160 Level 2 elias OP Posted 1 year agoHI there, any one if its possible to avoid running the same query twice when checking if relationship exists, before using it?@...
Laravel Version: 5.3.25 PHP Version: 7.0.13 Database Driver & Version: postgresql 9.6.1 Description: According to the docs for the required rule, "A field is considered "empty" if... the value is null." However, the required_if and requi...