Yii2-dynamicforms extension - php

Question

I am new to yii2.0, and I'm currently creating a form po
and po_item, the problem is to update the form the modelPoItem is empty from database.
I thank those who can help me for this Home with dynamic form can be with an example. Thank you in advance
Po Controller
/**
* Updates an existing Po model.
* If update is successful, the browser will be redirected to the 'view' page.
* #param integer $id
* #return mixed
*/
public function actionUpdate($id)
{
$model = $this->findModel($id);
$modelsPoItem = [new PoItem];
if ($model->load(Yii::$app->request->post()) && $model->save()) {
return $this->redirect(['view', 'id' => $model->id]);
} else {
return $this->render('update', [
'model' => $model,
'modelsPoItem' => (empty($modelsPoItem)) ? [new PoItem] : $modelsPoItem
]);
}
}
View
<div class="po-form">
<?php $form = ActiveForm::begin(['id' => 'dynamic-form']); ?>
<?= $form->field($model, 'po_no')->textInput(['maxlength' => 10]) ?>
<?= $form->field($model, 'description')->textarea(['rows' => 6]) ?>
<div class="row">
<div class="panel panel-default">
<div class="panel-heading"><h4><i class="glyphicon glyphicon-envelope"></i> Po Items</h4></div>
<div class="panel-body">
<?php DynamicFormWidget::begin([
'widgetContainer' => 'dynamicform_wrapper', // required: only alphanumeric characters plus "_" [A-Za-z0-9_]
'widgetBody' => '.container-items', // required: css class selector
'widgetItem' => '.item', // required: css class
'limit' => 10, // the maximum times, an element can be cloned (default 999)
'min' => 1, // 0 or 1 (default 1)
'insertButton' => '.add-item', // css class
'deleteButton' => '.remove-item', // css class
'model' => $modelsPoItem[0],
'formId' => 'dynamic-form',
'formFields' => [
'po_item_no',
'quantity',
],
]); ?>
<div class="container-items"><!-- widgetContainer -->
<?php foreach ($modelsPoItem as $i => $modelPoItem): ?>
<div class="item panel panel-default"><!-- widgetBody -->
<div class="panel-heading">
<h3 class="panel-title pull-left">Po Item</h3>
<div class="pull-right">
<button type="button" class="add-item btn btn-success btn-xs"><i class="glyphicon glyphicon-plus"></i></button>
<button type="button" class="remove-item btn btn-danger btn-xs"><i class="glyphicon glyphicon-minus"></i></button>
</div>
<div class="clearfix"></div>
</div>
<div class="panel-body">
<?php
// necessary for update action.
if (! $modelPoItem->isNewRecord) {
echo Html::activeHiddenInput($modelPoItem, "[{$i}]id");
}
?>
<div class="row">
<div class="col-sm-6">
<?= $form->field($modelPoItem, "[{$i}]po_item_no")->textInput(['maxlength' => 128]) ?>
</div>
<div class="col-sm-6">
<?= $form->field($modelPoItem, "[{$i}]quantity")->textInput(['maxlength' => 128]) ?>
</div>
</div><!-- .row -->
</div>
</div>
<?php endforeach; ?>
</div>
<?php DynamicFormWidget::end(); ?>
</div>
</div>
</div>
<div class="form-group">
<?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>
<?php ActiveForm::end(); ?>
</div>

Answer 1

you should be change you update action like this:
public function actionUpdate($id)
{
$model = $this->findModel($id);
$modelsPoItem = $model->poItems;
if ($model->load(Yii::$app->request->post()) && $model->save()) {
$oldIDs = ArrayHelper::map($modelsPoItem, 'id', 'id');
$modelsPoItem= Model::createMultiple(PoItem::className(),$modelsPoItem);
Model::loadMultiple($modelsPoItem, Yii::$app->request->post());
$deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelsPoItem, 'id', 'id')));
// ajax validation
if (Yii::$app->request->isAjax) {
Yii::$app->response->format = Response::FORMAT_JSON;
return ArrayHelper::merge(
ActiveForm::validateMultiple($modelsPoItem),
ActiveForm::validate($model)
);
}
// validate all models
$valid = $model->validate();
$valid = Model::validateMultiple($modelsPoItem) && $valid;
if ($valid) {
$transaction = \Yii::$app->db->beginTransaction();
try {
if ($flag = $model->save(false)) {
if (! empty($deletedIDs)) {
PoItem::deleteAll(['id' => $deletedIDs]);
}
foreach ($modelsPoItem as $modelPoItem) {
$modelPoItem->po_id = $model->id;
if (! ( $flag = $modelPoItem->save(false))) {
$transaction->rollBack();
break;
}
}
}
if ($flag) {
$transaction->commit();
return $this->redirect(['view', 'id' => $model->id]);
}
} catch (Exception $e) {
$transaction->rollBack();
}
}
} else {
return $this->render('update', [
'model' => $model,
'modelsPoItem' => (empty($modelsPoItem)) ? [new Model] : $modelsPoItem
]);
}
}