public function linkable($create = true, $edit = true)
    {
        $this->linkOnly = true;
        parent::writeable($create, $edit);
        return $this;
    }
public function linkable($create = true, $edit = true)
    {
        $this->linkOnly = true;
        parent::writeable($create, $edit);
        return $this;
    }
public function linkable ( $ create = true , $ edit = true ) { $ this -> linkOnly = true ; parent :: writeable ( $ create , $ edit ) ; return $ this ; }
Similar to writeable, but no new items can be created.
@param bool $create
@param bool $edit
@return $this
Similar to writeable but no new items can be created .