dropdown - laravel 背包 select2 占位符

Question

如何获取带有占位符的下拉列表“选择类别”作为默认选择？

以下代码未呈现占位符

    $this->crud->addField([  // Select2
       'label'     => 'Category',
       'type'      => 'select2',
       'name'      => 'category_id', // the db column for the foreign key
       'entity'    => 'category', 
       'attribute' => 'name', 
       'attributes' => ['placeholder' => 'Select a category'],
       .... ])

标签： dropdownplaceholder

Answer 1

在属性中添加：

'attributes' => [
   'data-placeholder' => 'Select Category'
 ]