I think I'm missing something with this example of the scenario 1 in the depdrop widget, this is the code:
/*
* SCENARIO 1: A 3-level nested dependency example
*/
// THE VIEW
use kartik\widgets\DepDrop;
// Parent
echo $form->field($model, 'cat')->dropDownList($catList, ['id'=>'cat-id']);
// Child # 1
echo $form->field($model, 'subcat')->widget(DepDrop::classname(), [
'options'=>['id'=>'subcat-id'],
'pluginOptions'=>[
'depends'=>['cat-id'],
'placeholder'=>'Select...',
'url'=>Url::to(['/site/subcat'])
]
]);
// Child # 2
echo $form->field($model, 'prod')->widget(DepDrop::classname(), [
'pluginOptions'=>[
'depends'=>['cat-id', 'subcat-id'],
'placeholder'=>'Select...',
'url'=>Url::to(['/site/prod'])
]
]);
// THE CONTROLLER
public function actionSubcat() {
$out = [];
if (isset($_POST['depdrop_parents'])) {
$parents = $_POST['depdrop_parents'];
if ($parents != null) {
$cat_id = $parents[0];
$out = self::getSubCatList($cat_id);
// the getSubCatList function will query the database based on the
// cat_id and return an array like below:
// [
// ['id'=>'<sub-cat-id-1>', 'name'=>'<sub-cat-name1>'],
// ['id'=>'<sub-cat_id_2>', 'name'=>'<sub-cat-name2>']
// ]
echo Json::encode(['output'=>$out, 'selected'=>'']);
return;
}
}
echo Json::encode(['output'=>'', 'selected'=>'']);
}
public function actionProd() {
$out = [];
if (isset($_POST['depdrop_parents'])) {
$ids = $_POST['depdrop_parents'];
$cat_id = empty($ids[0]) ? null : $ids[0];
$subcat_id = empty($ids[1]) ? null : $ids[1];
if ($cat_id != null) {
$data = self::getProdList($cat_id, $subcat_id);
/**
* the getProdList function will query the database based on the
* cat_id and sub_cat_id and return an array like below:
* [
* 'out'=>[
* ['id'=>'<prod-id-1>', 'name'=>'<prod-name1>'],
* ['id'=>'<prod_id_2>', 'name'=>'<prod-name2>']
* ],
* 'selected'=>'<prod-id-1>'
* ]
*/
echo Json::encode(['output'=>$data['out'], 'selected'=>$data['selected']]);
return;
}
}
echo Json::encode(['output'=>'', 'selected'=>'']);
}
Whenever I try this it says that the $catList is an undefined variable, where that variable come from? Assuming that I have a model/controller cat, sub-cat and prod and these are related.
If someone can guide me in the correct way it would be really helpful! Thanks