Yii2 中 ActiveForm 和 GridView 使用 Pjax

应用场景：

使用 ActiveForm表单修改数据后，提交表单，然后自动更新 GridView数据，表单和列表在同一个页面

如果自定义非ActiveForm表单按钮事件，可用ajax + $.pjax.reload() 代替

一个如何在 Yii2 的 GridView 和 ActiveForm 扩展中使用 Pjax 的例子。

这个例子使用一个数据库表 "countries" 字段为 id, name。

控制器

public function actionIndex()
{
$model = new Countries();

if ($model->load(Yii::$app->request->post()) && $model->save())
{
$model = new Countries(); //reset model
}

$searchModel = new CountriesSearch();
$dataProvider = $searchModel->search(Yii::$app->request->queryParams);

return $this->render('index', [
'searchModel' => $searchModel,
'dataProvider' => $dataProvider,
'model' => $model,
]);
}

视图

index.php

<?php

use yii\helpers\Html;
use yii\grid\GridView;
use yii\widgets\Pjax;

/* @var $this yii\web\View */
/* @var $searchModel app\models\CountriesSearch */
/* @var $dataProvider yii\data\ActiveDataProvider */

$this->title = Yii::t('app', 'Countries');
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="countries-index">

<h1><?= Html::encode($this->title) ?></h1>
<?php // echo $this->render('_search', ['model' => $searchModel]); ?>

<p>
<?= Html::a(Yii::t('app', 'Create {modelClass}', [
'modelClass' => 'Countries',
]), ['create'], ['class' => 'btn btn-success']) ?>
</p>

<!-- Render create form -->
<?= $this->render('_form', [
'model' => $model,
]) ?>

<?php Pjax::begin(['id' => 'countries']) ?>
<?= GridView::widget([
'dataProvider' => $dataProvider,
'filterModel' => $searchModel,
'columns' => [
['class' => 'yii\grid\SerialColumn'],
'id',
'name',
['class' => 'yii\grid\ActionColumn'],
],
]); ?>
<?php Pjax::end() ?>
</div>

_form.php

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $this yii\web\View */
/* @var $model app\models\Countries */
/* @var $form yii\widgets\ActiveForm */
?>

<?php

$this->registerJs(
'$("document").ready(function(){
$("#new_country").on("pjax:end", function() {
$.pjax.reload({container:"#countries"});  //Reload GridView
});
});'
);
?>

<div class="countries-form">

<?php yii\widgets\Pjax::begin(['id' => 'new_country']) ?>
<?php $form = ActiveForm::begin(['options' => ['data-pjax' => true ]]); ?>

<?= $form->field($model, 'name')->textInput(['maxlength' => 200]) ?>

<div class="form-group">
<?= Html::submitButton($model->isNewRecord ? Yii::t('app', 'Create') : Yii::t('app', 'Update'), ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>

<?php ActiveForm::end(); ?>
<?php yii\widgets\Pjax::end() ?>
</div>

英文版：http://www.yiiframework.com/wiki/772/pjax-on-activeform-and-gridview-yii2/