我对几天的一个问题感到困惑，我无法解决它。我有一个具有不同类的表单，当用户点击添加按钮时，我想生成几个字段。我可以生成字段，但我无法将那些特定的class_id传递给那些动态生成的字段。我正在使用this widget这就是我如何生成动态字段。
仅涉及的模型是Registration形式。除此之外，我只是触发查询并显示数据。一个类可以有多个Registrations
Class Registration
is id
name class_id
firstname
lastname
这是我的观看代码
<?php if (!empty($data)) {
foreach($data as $event){
$modelsRegistration = [new Registration()];
DynamicFormWidget::begin([
'widgetContainer' => 'dynamicform_wrapper', // required: only alphanumeric characters plus "_" [A-Za-z0-9_]
'widgetBody' => '.container-items'.$model['id'], // required: css class selector
'widgetItem' => '.item'.$model['id'], // required: css class
'limit' => 4, // the maximum times, an element can be added (default 999)
'min' => 0, // 0 or 1 (default 1)
'insertButton' => '.add-item'.$model['id'], // css class
'deleteButton' => '.remove-item'.$model['id'], // css class
'model' => $modelsRegistration[0],
'formId' => 'registration-form',
'formFields' => [
'firstname',
'lastname',
],
]);
?>
<div class="container">
<div class="row">
<div class="col-lg-9 col-md-9 col-sm-12 col-xs-12">
<table class="table table-striped table-bordered">
<thead>
<tr>
<th class="col-lg-4 col-md-4 col-sm-4 col-xs-4">Class Name</th>
<th class="col-lg-2 col-md-2 col-sm-2 col-xs-2">Rounds</th>
</tr>
</thead>
<tbody>
<tr>
<td><?= $event['name'] ?></td>
<td><button type="button" id="<?= $event['id'] ?>" class="add-item<?=$model['id'] ?> btn btn-success btn-xs">Add Rounds <i
class="glyphicon glyphicon-plus"></i></button></td>
</tr>
</tbody>
</table>
<div class="row">
<div class="container-items<?=$model['id'] ?>"><!-- widgetBody -->
<?php foreach ($modelsRegistration as $i => $modelRegistration){
?>
<div class="item<?=$model['id'] ?>"><!-- widgetItem -->
<?php
// necessary for update action.
if (!$modelRegistration->isNewRecord) {
echo Html::activeHiddenInput($modelRegistration, "[{$i}]id");
}
?>
<div class="row">
<div class="col-sm-5">
<?= $form->field($modelRegistration, "[{$i}]firstname")->textInput(['maxlength' => true]) ?>
</div>
<div class="col-sm-5">
<?= $form->field($modelRegistration, "[{$i}]lastname")->textInput(['maxlength' => true]) ?>
<?= $form->field($modelRegistration, "[{$i}]class_id")->hiddenInput(['maxlength' => true])->label(false) ?>
</div>
<div class="col-sm-2">
<button type="button" class="remove-item<?=$model['id'] ?> btn btn-danger btn-xs"><i
class="glyphicon glyphicon-minus"></i></button>
</div>
</div>
<!-- .row -->
</div>
<?php } ?>
</div>
</div>
</div>
</div>
</div>
<?php
DynamicFormWidget::end();
} } ?>
答案 0 :(得分：1)
如果您的视图只显示一个班级的人（因此，添加更多人意味着他们都是同一个班级），您可以在dynamicform中仅使用名字/姓氏字段并添加此id_class 1}}稍后在控制器中保存之前。
示例：
// load and validation of the model
// ...
foreach ($modelsRegistration as $modelRegistration) {
$modelRegistration->class_id = $myClassId;
if (! ($flag = $modelRegistration->save(false))) {
$transaction->rollBack();
break;
}
}
现在，如果在您的视图中，您所有班级的人员按部分划分，并且每个部分都有此添加按钮，我强烈建议您从那里删除此添加按钮，并创建一个新部分，仅用于添加人员（选择为选择一个班级。）
<强>步骤：
insertButton。并删除html按钮（不再工作）。添加新部分，如下所示：
<?php
$newModelsRegistration = [new Registration()];
DynamicFormWidget::begin([
'widgetContainer' => 'dynamicform_wrapper_registration', // required: [A-z0-9_]
'widgetBody' => '.container-items-registration', // required: css class selector
'widgetItem' => '.item-registration', // required: css class
'limit' => 1, // the maximum times, an element can be added (default 999)
'min' => 0, // 0 or 1 (default 1)
'insertButton' => '.add-item-registration', // css class
'deleteButton' => '.remove-item-registration', // css class
'model' => $newModelsRegistration[0], //
'formId' => 'registration-form',
'formFields' => [
'firstname',
'lastname',
'class_id'
],
]);
?>
<div class="panel-body">
<button type="button" class="add-item-registration btn btn-success btn-sm pull-right margin-b-base">
<i class="glyphicon glyphicon-plus"></i> Add
</button>
<div class="clearfix"></div>
<div class="container-items-registration"><!-- widgetBody -->
<?php foreach ($newModelsRegistration as $i => $newModelRegistration): ?>
<div class="item-registration panel panel-default"><!-- widgetItem -->
<div class="panel-heading">
<h3 class="panel-title pull-left">Registration</h3>
<div class="pull-right">
<button type="button" class="remove-item-registration btn btn-danger btn-xs"><i class="glyphicon glyphicon-minus"></i></button>
</div>
<div class="clearfix"></div>
</div>
<div class="panel-body">
<div class="form-group row">
<div class="col-md-12">
<?= $form->field($newModelRegistration, "[{$i}]firstname")->textInput(['maxlength' => true]) ?>
<?= $form->field($newModelRegistration, "[{$i}]lastname")->textInput(['maxlength' => true]) ?>
<?= $form->field($newModelRegistration, "[{$i}]class_id")->dropDownList(
ArrayHelper::map(Class::find()->all(), 'id', 'name'),
['prompt' => 'Select']
) ?>
</div>
</div>
</div>
</div>
<?php endforeach; ?>
</div>
</div>
<?php DynamicFormWidget::end(); ?>
确保 limit 选项设置为1。因此，很容易避免人们试图在同一个类中添加太多注册（如果我理解正确，每个类都有限制注册量）。您可以在注册模型中添加新规则，并检查它是否已达到该类的限制。 find()中使用的dropDownList方法也是如此。
但是如果您仍想在同一视图中添加所有这些添加按钮，您可以随时使用js为您添加该值。
示例：
// begin of form
// ...
<?= $form->field($modelRegistration, "[{$i}]class_id")->hiddenInput(['maxlength' => true, 'class' => 'form-control add-class-id', 'data-event' => $event['id']])->label(false) ?>
// end of form
<?php
$js = <<<JS
$('#registration-form').on('submit', function (e) {
$('.add-class-id').each(function() {
$(this).val($(this).attr('data-event'));
});
});
JS;
$this->registerJs($js);
?>
如果有任何这些想法适合您，请告诉我。