以 Laravel 形式设置选定的选项

Question

我需要像这样的 html 给出选定的值：

<select name="myselect" id="myselect">
 <option value="1">Item 1</option>
 <option value="2" selected='selected'>Item 2</option>

我怎样才能用 Laravel 形式实现这一点？

Answer 1

每个人都在谈论你去使用{!! Form::select() !!} {!! Form::select() !!}但是，如果您只需要使用简单的 HTML .. 这是另一种方法。

<select name="myselect">
@foreach ($options as $key => $value)
    <option value="{{ $key }}"
    @if ($key == old('myselect', $model->option))
        selected="selected"
    @endif
    >{{ $value }}</option>
@endforeach
</select>

当您提交表单并且验证失败时， old()函数很有用。 因此， old()返回先前选择的值。

Answer 2

你可以这样做。

<select class="form-control" name="resoureceName">

  <option>Select Item</option>

  @foreach ($items as $item)
    <option value="{{ $item->id }}" {{ ( $item->id == $existingRecordId) ? 'selected' : '' }}> {{ $item->name }} </option>
  @endforeach    </select>

Answer 3

您必须通过传递第三个参数来设置默认选项。

{{ Form::select('myselect', [1, 2], 2, ['id' => 'myselect']) }}

您可以在此处阅读文档。

Answer 4

使用这个包并检查文档：

https://laravelcollective.com/docs/5.2/html#drop-down-lists

形成你的 html ，你需要使用这个标记

{!! Form::select('size', array('L' => 'Large', 'S' => 'Small'), 'S'); !!}

Answer 5

如果选择框中的选项很少，另一种普通的简单方法很好

<select name="job_status">
   <option {{old('job_status',$profile->job_status)=="unemployed"? 'selected':''}}  value="unemployed">Unemployed</option>
   <option {{old('job_status',$profile->job_status)=="employed"? 'selected':''}} value="employed">Employed</option>
</select>

Answer 6

以 Laravel 形式设置 selected 选项非常简单：

{{ Form::select('number', [0, 1, 2], 2) }}

输出将是：

<select name="number">
  <option value="0">0</option>
  <option value="1">1</option>
  <option value="2" selected="selected">2</option>
</select>

Answer 7

            @foreach ($categories as $category)
             <option value="{{$category->id}}" 
               @foreach ($posts->postRelateToCategory as $Postcategory)
                 @if ($Postcategory->id == $category->id)
                 {{'selected="selected"'}}
                 @endif 
               @endforeach >
              {{ $category->category_name }} </option>               
            @endforeach    

Answer 8

  <?php
      $items = DB::table('course')->get()->pluck('name','id');
      $selectID = 3;
  ?>

  <div class="form-group">
   {{ Form::label('course_title', 'Course Title') }}
   {!! Form::select('myselect', $items, $select, ['class' => 'form-control']) !!}
  </div>

这显示了类似类型的以下选项：

<select name="myselect" id="myselect">
 <option value="1">Computer Introduction</option>
 <option value="2">Machine Learning</option>
 <option value="3" selected='selected'>Python Programming</option>
 <option value="4">Networking Fundamentals</option>
 .
 .
 .
 .  
</select>

Answer 9

为了回应这里的其他一些答案，我刚刚在 5.6 中使用的代码是这样的

{{ Form::select('status', ['Draft' => 'Draft', 'Sent' => 'Sent', 'Paid' => 'Paid'], $model->status, ['id' => 'status']) }}

为了能够使用 LaravelCollective 的 Form Helper，我查看了https://laravelcollective.com/docs/master/html#drop-down-lists

我还必须编写 require 依赖项，以便我可以在我的项目中使用它

composer require "laravelcollective/html":"^5"

最后我更改了我的config/app.php并在$aliases数组中添加了以下内容

    'Form' => Collective\Html\FormFacade::class,

如果上述任何一项停止工作，应咨询https://laravelcollective.com/docs/master/html 。

Answer 10

试试这个

<select class="form-control" name="country_code" value="{{ old('country_code') }}">
   @foreach (\App\SystemCountry::orderBy('country')->get() as $country)
       <option value="{{ $country->country_code }}"
           @if ($country->country_code == "LKA")
             {{'selected="selected"'}}
           @endif
       >
          {{ $country->country }}
       </option>
   @endforeach
</select>

Answer 11

如果您的模型之间有Eloquent 关系，您可以执行以下操作：

@foreach ($ships as  $ship)
<select name="data[]" class="form-control" multiple>
    @foreach ($goods_containers as  $container)
        <option value="{{ $container->id }}"
                @if ($ship->containers->contains('container_id',$container->id ) ))
                selected="selected"
                @endif
        >{{ $container->number}}</option>
    @endforeach
</select>
@endforeach

Answer 12

只需简单地粘贴此代码，您将获得所需的输出。

 {{ Form::select ('myselect', ['1' => 'Item 1', '2' => 'Item 2'], 2 , ['id' =>'myselect']) }}` `

Answer 13

您也可以针对有限的选项尝试此操作：

          <select class="form-control required" id="assignedRole">
            <option id = "employeeRole" selected ="@if($employee->employee_role=='Employee'){'selected'}else{''} @endif">Employee</option>
            <option id = "adminRole" selected ="@if($employee->employee_role=='Admin'){'selected'}else{''} @endif">Admin</option>
            <option id = "employerRole" selected ="@if($employee->employee_role=='Employer'){'selected'}else{''} @endif">Employer</option>
          </select>

Answer 14

如果有人还在这里，这是我的简单版本。

<select name="status" class="js-example-basic-single w-100">
              <option value="" @if($brand->status == '') ? selected : null @endif disabled>Choose what to be seen on brand section</option>
              <option value="TA" @if($brand->status == 'TA') ? selected : null @endif>Title Active</option>
              <option value="ITA" @if($brand->status == 'ITA') ? selected : null @endif>Image Title Active</option>
             
            </select>