SampleLoopService::prepend_post_header() breaks

[jbaldrich]

When passing an array of objects to SimpleView::render() the magic getter tries to escape an object and breaks. That's why SampleLoopService doesn't work, it should render the strings instead of the post object.

[robwoodgate]

Yes, string conversion has been specifically excluded as a catchable error, so the try/catch doesn't work in the SimpleView::get() method, even with \Throwable catch type.

The code would work as-written, if SimpleView used a runtime error handler to make the error catchable.

However, I suspect the intention was just to escape strings and leave arrays, objects etc untouched... in which case, a simple check like so could work in SimpleView::__get():

public function __get( $property ) {
    if ( array_key_exists( $property, $this->_context_ ) ) {
        $value = $this->_context_[ $property ];
        // Escape string values, otherwise return as-is
        return (is_string($value)) ? $this->escape( $value ) : $value;
    }
    ... rest of method ...
}

Otherwise, if the intention is to completely denature anything that is stringable (including objects implementing __toString()), then the calls to the $post object in the test-loop-service.php view need to change to use the raw() method like so:

$this->escape($this->raw('post')->post_title);

Cheers
Rob

Ps - Deferring to @schlessera for the exact fix, but hope the above is useful to anyone playing with this cool boilerplate meantime.