How I can check existing property $this->team->playerAssignment->player
in more rational way? Now I check it like this:
if ($this->team)
if (($this->team->playerAssignment))
if (($this->team->playerAssignment->player))
Try isset php function.
isset — Determine if a variable is set and is not NULL
if(isset($this->team->playerAssignment->player)){
}