Yii Framework Undefined Variable model - php

Question

I tried my best to solve this , but I can't seem to figure out where the problem is. Here is my code:
views/supermarkets/index.php:
<?php
use yii\helpers\Html;
use yii\widgets\LinkPager;
?>
<h1>Supermarkets</h1>
<ul>
<?php
$array = (array) $supermarkets;
$this->widget('zii.widgets.grid.CGridView', array(
'id' => 'supermarkets-grid',
'dataProvider' => $model->search(),
'filter' => $model,
'columns' => array(
'name',
'location',
'telephone',
'fax',
'website'
),
));
function build_table($array){
// start table
$html = '<table class="altrowstable" id="alternatecolor">';
// header row
$html .= '<tr>';
foreach($array[0] as $key=>$value){
$html .= '<th>' . $key . '</th>';
}
$html .= '</tr>';
// data rows
foreach( $array as $key=>$value){
$html .= '<tr>';
foreach($value as $key2=>$value2){
$html .= '<td>' . $value2 . '</td>';
}
$html .= '</tr>';
}
// finish table and return it
$html .= '</table>';
return $html;
}
echo build_table($array);
?>
<?= LinkPager::widget(['pagination' => $pagination]) ?>
Supermarkets.php:
<?php
namespace app\models;
use yii\db\ActiveRecord;
class Supermarkets extends ActiveRecord
{
public function search()
{
$criteria=new CDbCriteria;
$criteria->compare('name',$this->Name,true);
$criteria->compare('location',$this->Location,true);
$criteria->compare('telephone',$this->Telephone,true);
$criteria->compare('fax',$this->Fax,true);
$criteria->compare('website',$this->Website,true);
return new CActiveDataProvider(get_class($this), array(
'criteria'=>$criteria,
'sort'=>array(
'defaultOrder'=>'name ASC',
),
'pagination'=>array(
'pageSize'=>20
),
));
}
SupermarketsController.php:
<?php
namespace app\controllers;
use yii\web\Controller;
use yii\data\Pagination;
use app\models\Supermarkets;
class SupermarketsController extends Controller
{
public function actionIndex()
{
$query = supermarkets::find();
$pagination = new Pagination([
'defaultPageSize' => 20,
'totalCount' => $query->count(),
]);
$supermarkets = $query->orderBy('Name')
->offset($pagination->offset)
->limit($pagination->limit)
->all();
return $this->render('index', [
'supermarkets' => $supermarkets,
'pagination' => $pagination,
]);
$model =new Supermarkets('search');
if(isset($_GET['Supermarkets']))
$model->attributes =$_GET['Supermarkets'];
return $this->render('index', array('model'=>$model));
}
public function actionName(){
$model = new Supermarkets();
$this->render('index', array('model'=>$model));
}
}
This is the error I'm getting:
Undefined variable: model in index.php at ('dataProvider' => $model->search() )
I am trying to add Search and filter criteria based on the following question How to add Search and Filter Criteria in Yii
Could you please help me?

Answer 1

in your SupermarketsController.php: you have a mistake:
you have rendered this
return $this->render('index', [
'supermarkets' => $supermarkets,
'pagination' => $pagination,
]);
which doesn't have any model named variable,
and later you have
$model =new Supermarkets('search');
if(isset($_GET['Supermarkets']))
$model->attributes =$_GET['Supermarkets'];
return $this->render('index', array('model'=>$model));
which will be useless, because you are returning before that,
so you can grab that variable and render it along with the first render

Answer 2

This will work. You have rendered 2 time index view. mergethem into one
public function actionIndex()
{
$query = supermarkets::find();
$pagination = new Pagination([
'defaultPageSize' => 20,
'totalCount' => $query->count(),
]);
$supermarkets = $query->orderBy('Name')
->offset($pagination->offset)
->limit($pagination->limit)
->all();
$model =new Supermarkets('search');
if(isset($_GET['Supermarkets']))
$model->attributes =$_GET['Supermarkets'];
return $this->render('index', array(
'model' => $model,
'supermarkets' => $supermarkets,
'pagination' => $pagination,
));
}

Answer 3

You have rendered two time in your controller,
$model =new Supermarkets('search');
if(isset($_GET['Supermarkets']))
$model->attributes =$_GET['Supermarkets'];
return $this->render('index', array(
'model' => $model,
'supermarkets' => $supermarkets,
'pagination' => $pagination,
));
Please above code by replacing below code
return $this->render('index', [
'supermarkets' => $supermarkets,
'pagination' => $pagination,
]);
$model =new Supermarkets('search');
if(isset($_GET['Supermarkets']))
$model->attributes =$_GET['Supermarkets'];
return $this->render('index', array('model'=>$model));