Incompatible with Twig 2.7.2

[nnrudakov]

Update composer. I have Admin model with string role attribute. I have an empty model in create form. My template fragment:

{% if model.role != constant('app\\models\\Admin::ROLE_SUPERADMIN') %}
    {{ form.field(model, 'role').dropDownList(roles)|raw }}
{% endif %}

And in condition I've got an error:

Twig\Error\RuntimeError
An exception has been thrown during the rendering of a template ("Calling unknown method: app\models\Admin::role()").
↵
Caused by: Unknown Method – yii\base\UnknownMethodException

It works with Twig 2.6.2.

Additional info

Q	A
Yii version	2.0.16.1
Yii Twig version	2.2.1
Twig version	2.7.2
PHP version	7.0+
Operating system	Ubuntu

[machour]

Confirmed, it seems that our tests broke with Twig 2.7.0. It might have something to do with the security fix to the sandbox: https://github.com/twigphp/Twig/blob/2.x/CHANGELOG#L75

[nnrudakov]

Error appears when environment option strict_variables is true. Twig trying to call a method if property is null which returns __get() and __isset() of model. There is no error if strict_variables is false. Checked on Twig v2.12.1 also.