backpack-for-laravel 如何在 ajax 选择时更改字段属性

backpack-for-laravel How to change the field attribute upon ajax selection

我的 crud 中有一个字段

        $this->crud->addField([
            'name'      => 'transaction_type',
            'label'     => 'Transaction Type',
            'type'      => 'select2',
            'entity'    => 'transactionType',
            'attribute' => 'name',
            'model'     => 'App\Models\TransactionType',
            'attributes' => [
                'required' => true,
            ],
        ]);

        $this->crud->addField([
            'name'      => 'developer_id',
            'label'     => 'Developer',
            'type'      => 'select2',
            'entity'    => 'developer',
            'attribute' => 'name',
            'model'     => 'App\Models\Developer',
        ]);

我想将 developer_id 所需的属性设置为 true,因为默认情况下它是 false。我知道如何使用下面的代码使它为假

$this->crud->modifyField('developer_id',['attributes' => [
      'required' => true,
]]);

现在的问题是,在transaction_type中选择一个选项,如何让developer_id变为'required' => true? 到目前为止我得到的是将 'data_source' => url("admin/api/devrequirement")' 放在 transaction_type 的 addfield 中。所以它看起来像这样

$this->crud->addField([
            'name'      => 'transaction_type',
            'label'     => 'Transaction Type',
            'type'      => 'select2',
            'entity'    => 'transactionType',
            'attribute' => 'name',
            'data_source' => url("admin/api/devrequirement"), //i added it here
            'model'     => 'App\Models\TransactionType',
            'attributes' => [
                'required' => true,
            ],
        ]);

然后在我的自定义路线中放置一条路线: Route::get('/api/devrequirement', 'SaleCrudController@setDevRequirement'); 该函数内部是:

public function setDevRequirement(Request $request)
    {
        $form = collect($request->input('form'))->pluck('value', 'name');
        $transaction_type = $form['transaction_type'];
        if($transaction_type == 3) //if transaction type is equal to a specific value then required attribute of developer_id should be true
        {
            $this->crud->modifyField('developer_id',['attributes' => [
                'required' => true,
            ]]);
        }
    }

但它什么也没做。它没有在我的开发人员字段上放置红色星号,也没有要求验证。我很难理解 laravel 背包以及如何使用它来操纵 ajax。

没关系,我只是制作自定义字段并在其中进行一些 js 操作