CODEWITHSUNDEEP
arraysurlparameterscontrolleryii2
robsch
robsch

Reputation: 9728

Yii2: How can I pass an array as parameter to a controller action?

With the URL http://localhost/site/myAction?a[]=value1&a[]=value2 I'm trying to pass an array to an action. The controller action looks like this:

class SiteController extends Controller {
    public function actionMyAction($a) {
        ...
    }
}

I get the error:

exception 'yii\base\InvalidParamException' with message 'Variable declaration not valid.'

Actually, I'd like to be able to pass a string or an array of strings to the action. The single string works fine but not the array. How can I solve it?

Upvotes: 2

Views: 7830

Answers (2)

Vikul Kumar
Vikul Kumar

Reputation: 11

compareList=[{"model":"shine"},{"model":"yamaha-alba"}]

using json encode data you can pass multiple value.

Upvotes: 1

robsch
robsch

Reputation: 9728

Passing a string and an array with the same declared parameter is not possible as it seems. To pass an array the parameter has to be declared this way:

class SiteController extends Controller {
    public function actionMyAction(array $a) { // parameter must be an array now
        ...
    }
}

With this a single parameter in the URL needs to be wrapped into an array within the URL.

An alternative is to declare no parameter at all and fetch the values with Yii::$app->request->get():

class SiteController extends Controller {
    public function actionMyAction() {       // no parameter anymore
        $a = Yii::$app->request->get('a');   // $a can be an array or a string!
                                             // or null if no argument was passed.
    }
}

Now these URLs are valid:

http://localhost/site/myAction?a[]=value1&a[]=value2
http://localhost/site/myAction?a[]=value1
http://localhost/site/myAction?a=value1
http://localhost/site/myAction

Upvotes: 4

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