How can I pass parameter/dropdown value to model function - php

Question

I am using yii2 advanced template improved
Not sure if relevant to problem/a solution but to get to the category I have a form with some javascript which on change redirects the user to the category selected.
I have the following code which allows me to access the posts within that category id I go to localhost:8888/advanced/article/category?id=1
The problem at the minute is that if I call getCategoryName function in my model from my category view the id parameter isn't being passed to the model function therefore when using getCategoryName defaults to sport.
public function actionCategory($id)
{
$model = new Article();
$searchModel = new ArticleSearch();
$query = Article::find()
->where(['category' => $id]);
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
return $this->render('category', [
'searchModel' => $searchModel,
'dataProvider' => $dataProvider,
'model'=>$model,
]);
}
Then within my view I use the following which works to an extent in terms of executing the model function, however I am unsure on how to pass the parameter/current category id to the model function. The below code work for the _index & in the single article view.
<?= $model->CategoryName ?>
This is my model function
public function getCategoryName($category = null)
{
$category = (empty($category)) ? $this->category : $category ;
if ($category === self::CATEGORY_ECONOMY)
{
return Yii::t('app', 'Economy');
}
elseif ($category === self::CATEGORY_SOCIETY)
{
return Yii::t('app', 'Society');
}
else
{
return Yii::t('app', 'Sport');
}
}

Answer 1

Use something like this, in your view
$request = Yii::$app->request;
$id = $request->get('id');//get id from request or change according to your requirement
echo $model->getCategoryName($id);//full method name here

Answer 2

Try to use this. change === to ==:
public function getCategoryName($category = null)
{
$category = (empty($category)) ? $this->category : $category ;
if ($category == self::CATEGORY_ECONOMY)
{
return Yii::t('app', 'Economy');
}
elseif ($category == self::CATEGORY_SOCIETY)
{
return Yii::t('app', 'Society');
}
else
{
return Yii::t('app', 'Sport');
}
}