</select> 在上面的示例中,我们首先使用old()函数获取名为select_input的旧输入值,并将其赋值给$oldValue变量。然后,在每个选项中使用@if指令来检查当前选项的值是否等于旧值,如果是,则添加selected属性。 这样,在渲染刀片时,如果之前的请求中有名为select_input的旧输入值,对应的选项将会被选中。 推荐的腾讯云相关...
// 从数据库中检索旧值 $oldValue = DB::table('options')->pluck('value', 'id')->toArray(); // 填充下拉选择框 echo Form::select('option', $oldValue, null, ['placeholder' => 'Select an option']); 在上面的代码中,我们使用DB类从数据库中检索旧值,并将其转换为数组。然后,我们使用For...
This column will be used to store a token for users that select the "remember me" option when logging into your application. Again, the default users table migration that is included in new Laravel applications already contains this column....
This column will be used to store a token for users that select the "remember me" option when logging into your application. Again, the default users table migration that is included in new Laravel applications already contains this column....
4.修改配置config/laravels.php:监听的IP、端口等,请参考配置项。 运行 在运行之前,请先仔细阅读:注意事项(这非常重要)。 操作命令:php bin/laravels {start|stop|restart|reload|info|help}。 启动选项,针对start和restart命令。 运行时文件:start时会自动执行php artisan laravels config并生成这些文件,开发者一...
4.修改配置config/laravels.php:监听的IP、端口等,请参考配置项。 5.性能调优 调整内核参数 Worker数量:LaravelS 使用 Swoole 的同步IO模式,worker_num设置的越大并发性能越好,但会造成更多的内存占用和进程切换开销。如果1个请求耗时100ms,为了提供1000QPS的并发能力,至少需要配置100个Worker进程,计算方法:worker_nu...
publicfunctionselectPersonalData(PersonalDataSelection$personalDataSelection):void{$personalDataSelection->addFile(storage_path("avatars/{$this->id}.jpg"), directory:'avatars'); } This package also offers an artisan command to remove old zip files. ...
Visit your page and you will be presented with a form, to first select the notification type and then fill out the title, body, link and link text. Once you have filled everything out, hit send to push the notification out to all users. ...
<input type="text" name="author" id="author" {{ $errors->has('author') ? 'class=has-error' : '' }} value="{{ Request::old('author') }}"> </div> <div class="input-group"> <label for="category_select">Add Category</label> ...
(name, id) in cities":value="id">@{{name}}</option></select></div><divclass="col-sm-3"><selectclass="form-control"v-model="districtId"><optionvalue="">选择区</option><option v-for="(name, id) in districts":value="id">@{{name}}</option></select></div></div></select...