Yii2- Unable to pass model from controller to view - php

Question

I am working on Yii2. I have a controller in which I am doing the following.
/**
* #param $id
* #return string|\yii\web\Response
* #throws NotFoundHttpException
* #throws \Exception
* #throws \yii\db\Exception
* #throws \yii\db\StaleObjectException
*/
public function actionViewcreated($id)// passed the id of my model which is created in the previous step
{
$params = "";
//print_r('hi');
$model= $this->findModel($id); // this will find my model/record based on the id
$sub_div = $model->sub_div;
$meter_type = $model->meter_type;
$query = /** #lang text */
"SELECT DISTINCT m.`id` AS meter_id, ins.`meter_msn` AS Meter_Serial_Number, ins.`meter_type` AS Meter_Type, sd.`sub_div_code` AS Sub_Division_Code,sd.`name` AS Sub_Division_Name
FROM `installations` ins
INNER JOIN `meters` m ON ins.`meter_msn` = m.`meter_msn`
INNER JOIN `meter_acceptance_header` map ON ins.`meter_type` = map.`meter_type`
INNER JOIN `survey` sur ON ins.`ref_no` = sur.`ref_no`
INNER JOIN `survey_hesco_subdivision` sd ON sur.`sub_division` = sd.`sub_div_code`
WHERE ins.`meter_type` = '$meter_type'
AND sd.`sub_div_code` = '$sub_div'
AND m.`id` NOT IN (SELECT DISTINCT md.`meter_id` FROM
`meter_acceptance_details` md WHERE md.`flag` IN (1))";
$session = Yii::$app->session;
$session->set('my_sql', $query);
$sqlCount= /** #lang text */
"SELECT COUNT(DISTINCT m.`id`)
FROM `installations` ins
INNER JOIN `meters` m ON ins.`meter_msn` = m.`meter_msn`
INNER JOIN `meter_acceptance_header` map ON ins.`meter_type` = map.`meter_type`
INNER JOIN `survey` sur ON ins.`ref_no` = sur.`ref_no`
INNER JOIN `survey_hesco_subdivision` sd ON sur.`sub_division` = sd.`sub_div_code`
WHERE ins.`meter_type` = '$meter_type'
AND sd.`sub_div_code` = '$sub_div'
AND m.`id` NOT IN (SELECT DISTINCT md.`meter_id` FROM `meter_acceptance_details` md WHERE md.`flag` IN (1))";
$params = Yii::$app->request->queryParams;
//print_r(isset($params->Meter_Serial_Number));
if(isset($params['Meter_Serial_Number']) && $params['Meter_Serial_Number']!==''){
$query.="AND WHERE (ins.`meter_msn`='".$params['Meter_Serial_Number']."')";
$sqlCount="AND WHERE (ins.`meter_msn`='".$params['Meter_Serial_Number']."')";
}
if(isset($params['Sub_Division_Name'])&&$params['Sub_Division_Name']!==''){
$query.="AND WHERE (sd.`name`='".$params['Sub_Division_Name']."')";
$sqlCount.="AND WHERE (sd.`name`='".$params['Sub_Division_Name']."')";
}
//print_r($query);
$count = Yii::$app->db->createCommand($sqlCount)->queryScalar();
$session = Yii::$app->session;
$session->set('total', $count);
if($count <= 0)
{
$this->findModel($id)->delete();
\Yii::$app->getSession()->setFlash('errors', '
<div class="alert alert-error alert-dismissable">
<button aria-hidden="true" data-dismiss="alert" class="close"
type="button">×</button>
<strong>There are no meters installed against the selected Sub Division!!!! </strong>Acceptance is not Created</div>');
return $this->redirect(['index', 'id' => $model->id]);
}
else
{
$dataProvider = new SqlDataProvider([
'sql' => $query,
'totalCount' => $count,
'pagination' => false,
]);
return $this->render('viewcreated', [
'dataProvider' => $dataProvider,
'model' =>$model,
'id' => $model->id
]);
}
}
View
$this->title = $model->id;
$this->title = 'Meter Acceptance Form';
$this->params['breadcrumbs'][] = $this->title;
.
.
.
<?php Pjax::begin(); ?>
<?= DetailView::widget([
'model' => $model,
'attributes' => [
[
'label'=>'Serial #',
'value' => function($d)
{
return $d->id;
}
],
[
'label' => 'Meter Type',
'value' => function ($d) {
if(is_object($d))
return $d->meter_type;
return ' - ';
},
],
'sub_div',
[
'label' => 'Sub Division Name',
'value' => function ($d) {
if(is_object($d))
return $d->subDiv->name;
return '-';
},
],
[
'label' => 'Prepared By',
'value' => function ($d) {
if(is_object($d))
return $d->prepared->name;
},
],
'prepared_at',
'status',
],
]) ?>
.
.
.
<?php Pjax::end(); ?>
.
.
.
Submit
When I press the Submit button I am getting the following error
PHP Notice 'yii\base\ErrorException' with message 'Undefined variable: model'
in
E:\xampp\htdocs\inventory-web\backend\views\meteracceptanceheader\viewcreated.php:17
And line 17 is $this->title = $model->id;
How can I get rid of this issue?
Update 1
By doing print_r($model); exit(); I got the following result
common\models\MeterAcceptanceHeader Object ( [_attributes:yii\db\BaseActiveRecord:private] => Array ( [id] => 1 [sub_div] => 37111 [meter_type] => L.T.TOU [prepared_by] => 12 [prepared_at] => 2018-08-03 08:39:22 [updated_at] => [status] => Prepared ) [_oldAttributes:yii\db\BaseActiveRecord:private] => Array ( [id] => 1 [sub_div] => 37111 [meter_type] => L.T.TOU [prepared_by] => 12 [prepared_at] => 2018-08-03 08:39:22 [updated_at] => [status] => Prepared ) [_related:yii\db\BaseActiveRecord:private] => Array ( ) [_errors:yii\base\Model:private] => [_validators:yii\base\Model:private] => [_scenario:yii\base\Model:private] => default [_events:yii\base\Component:private] => Array ( ) [_behaviors:yii\base\Component:private] => Array ( ) )
Update 2:
View Process Controller
/**
* #param $id
* #return \yii\web\Response
* #throws NotFoundHttpException
* #throws \Exception
* #throws \yii\db\StaleObjectException
*/
public function actionViewprocess($id)
{
$model = $this->findModel($id);
$accpt_id = $model->id;
$meter_type = $model->meter_type;
$ogp_sub_div = $model->sub_div;
if(Yii::$app->request->isAjax && Yii::$app->request->post())
{
$data = explode(',',$_POST['data']);
foreach($data as $value)
{
$m = new MeterAcceptanceDetails;
$m -> load(Yii::$app->request->post());
$m->accpt_id = $accpt_id;
$m->meter_type = $meter_type;
$m->created_at = date('Y-m-d H:i:s');
$m->meter_id = $value;
$m->meter_msn = \common\models\Meters::idTomsn($value);
$m->flag = 1;// 1 means created
$m->ogp_sub_div = $ogp_sub_div;
if($m->save())
{
$model->status = MeterAcceptanceHeader::$status_titles[1];
$model->update();
}
else{
$this->renderAjax('viewcreated');
}
}
}
else{
$this->renderAjax('viewcreated');
}
$query = /** #lang text */
"SELECT DISTINCT a.`id` AS Accpt_Id,u.`name` AS Prepared_By,b.`meter_msn` AS Meter_Serial_Number, b.`meter_type` AS Meter_Type,
sd.`name` AS Sub_Div_Name,DATE(b.`created_at`) AS 'Date' FROM
`meter_acceptance_header` a
INNER JOIN `meter_acceptance_details` b ON a.`id` = b.`accpt_id`
INNER JOIN `survey_hesco_subdivision` sd ON b.`ogp_sub_div` = sd.`sub_div_code`
INNER JOIN `user` u ON a.`prepared_by` = u.`id`
WHERE b.`accpt_id` =$accpt_id AND b.`meter_type` = '$meter_type'";
return $this->redirect(Url::toRoute(['meteracceptanceheader/viewprocess','id' => $model->id, 'model' => $this->findModel($id)]));
}
View Process View
$this->title = $model->id;
$this->title = 'Meter Acceptance';
$this->params['breadcrumbs'][] = $this->title;
<section class="content-header">
<h1>Meter Acceptance</h1>
</section>
<section class="content">
<div class="box">
<div class="box-body">
<?= GridView::widget([
'dataProvider' => $dataProvider,
'columns' => [
['class' => 'yii\grid\SerialColumn'],
[
'label'=>'Serial #',
'value' => 'Accpt_Id'
],
'Date',
'Prepared_By',
'Meter_Serial_Number',
'Meter_Type',
'Sub_Div_Name',
],
]); ?>
</div>
</div>
</section>
Any help would be highly appreciated.

Answer 1

You are using an anchor link to submit to the viewprocess
Submit
which resolves to a GET request and then in the actionViewprocess you are checking
if(Yii::$app->request->isAjax && Yii::$app->request->post())
which resolves to false and the control goes to the else part where you call
$this->renderAjax('viewcreated')
, and here is the main problem you are not passing the $model with the view which is required and hence gives you error on the very first line
$this->title = $model->id;
which is in the exception too, you should either pass all the required vars for the view if you are trying to render it from another action or redirect to that action rather than using renderAjax()

Answer 2

Most likely your model doesn't include phodoc comment which includes the field descriptions. Ie. on top of your model class, you should have a comment like this:
/**
* This is the model class for table "applications".
*
* #property integer $id
* #property integer $someotherfield
*/
NOTE: you have posted controller code, but the functionality there would belong to model as per MVC principles. If this comment doesn't help, please post also your model code.