Laravel 4.2 required_if通過復選框數組進行驗證

Question

我不知道如何使required_if驗證規則起作用。 它似乎沒有運行，但可能是因為我沒有正確使用它。 所有其他規則都運行，但是該規則似乎不起作用。 有人可以告訴我我做錯了嗎？

這是HTML（帶有Blade）

     <div class="col-lg-6 col-md-6 col-sm-6 col-xs-6">
    {{ Form::checkbox('class_of_mail[]', 'Nonprofit Standard (Bulk)', null, ['data-id' => 'non-profit-standard-bulk']) }} Nonprofit Standard (Bulk)* <br />
    {{ Form::checkbox('class_of_mail[]', 'Presorted Standard (Bulk)', null, ['data-id' => 'presorted-standard-bulk']) }} Presorted Standard (Bulk)* <br />
    {{ Form::checkbox('class_of_mail[]', 'Presorted First Class (500 pieces or more)', null, ['data-id' => 'presorted-first-class']) }} Presorted First Class (500 pieces or more) <br />
    {{ Form::checkbox('class_of_mail[]', 'First Class', null, ['data-id' => 'first-class']) }} First Class <br />
    {{ Form::checkbox('class_of_mail[]', 'Campus', null, ['data-id' => 'campus']) }} Campus <br />
    {{ Form::checkbox('class_of_mail[]', 'Other',  null, ['data-id' => 'class_of_mail_other']) }} Other <br />
    {{ Form::checkbox('class_of_mail[]', 'Customer Provided List', null, ['data-id' => 'class_of_mail_customer_provided_list']) }} I would like to provide my own campus list <br />
    </div>

    <div id="mailing_class_other_div" class="form-group row hide">
        {{ Form::label('mailing_class_other', 'Other Class of Mail', ['class' => 'control-label col-lg-12 col-md-12 col-sm-12 col-xs-12']) }}
        <div class="col-lg-5 col-md-5 col-sm-5 col-xs-5">
        {{ Form::text('mailing_class_other', null, ['class' => 'form-control input-sm']) }}
        </div>
    </div> 

這是我控制器中的$ rules數組。 此表格沒有模型。

    $rules = [
        'department' => 'required|min:2|max:64',
        'purchase_requisition' => 'required|min:2|max:64',
        'contact_name' => 'required|min:2|max:64',
        'contact_phone' => 'required|min:2|max:32',
        'alt_contact_name' => 'required_with:alt_contact_phone',
        'alt_contact_phone' => 'required_with:alt_contact_name',
        'mailing_subject' => 'required|min:2|max:64',
        'mailing_piece_count' => 'required|min:1|max:11',
        'class_of_mail' => 'required',
        ## Here is the required_if validation rule ##
        'mailing_class_other' => 'required_if:class_of_mail,Other',
    ];

    $validator = Validator::make($input, $rules, $messages);

    if ($validator->fails())
    {
        $messages = $validator->messages();
        return Redirect::to('print-to-mail')->withErrors($validator)->withInput();
    }

Answer 1

您的所有字段似乎都在'class_of_mail'數組中發送，因此$POST數組將類似於：

array(
    'class_of_mail' => array('Other'),
    'mailing_class_other' => '...'
)

僅當'class_of_mail' == 'Other' ，才開始對mailing_class_other驗證，而'class_of_mail'實際上等於array('Other') 。

我不認為Laravel有使用數組值處理此規則的方法，所以我認為最好的選擇是像在本文檔的此部分中一樣有條件地添加該規則： http : //laravel.com/docs/4.2/validation ＃有條件地加入規則

$validator->sometimes('mailing_class_other', 'required', function($input)
{
    return in_array($input->class_of_mail, 'Other');
});

如果'class_of_mail'數組包含'Other'值， 'class_of_mail'需要'mailing_class_other'字段。