Checks if casting an expression to toString() is allowed by the sandbox.
For instance, when there is a simple Print statement, like {{ article }},
and if the sandbox is enabled, we need to check that the toString()
method is allowed if 'article' is an object. The same goes for {{ article|upper }}
or {{ random(article) }}.
Checks if casting an expression to toString() is allowed by the sandbox.
For instance, when there is a simple Print statement, like {{ article }}, and if the sandbox is enabled, we need to check that the toString() method is allowed if 'article' is an object. The same goes for {{ article|upper }} or {{ random(article) }}.