private function chartExists()
{
$start = '<!-- Begin ' . $this->modelName . ' Chart -->';
$end = '<!-- End ' . $this->modelName . ' Chart -->';
$file = base_path('resources/views/' . $this->modelPath . '/index.blade.php');
//read the entire string from file
$content = file_get_contents($file);
// do we have the chart?
return $this->patternMatch($start, $end, $content) ? true : false;
}