public function setFirstname($firstname)
    {
        $firstname = ($firstname === null ? $firstname : (string) $firstname);

        if ($this->exists() && $this->firstname !== $firstname) {
            $this->updated['firstname'] = true;
        }

        $this->firstname = $firstname;

        return $this;
    }
public function setFirstname($firstname)
    {
        $firstname = ($firstname === null ? $firstname : (string) $firstname);

        if ($this->exists() && $this->firstname !== $firstname) {
            $this->updated['firstname'] = true;
        }

        $this->firstname = $firstname;

        return $this;
    }
public function setFirstname ( $ firstname ) { $ firstname = ( $ firstname === null ? $ firstname : ( string ) $ firstname ) ; if ( $ this -> exists ( ) && $ this -> firstname !== $ firstname ) { $ this -> updated [ 'firstname' ] = true ; } $ this -> firstname = $ firstname ; return $ this ; }
Set value for field "user_firstname"

@param  string $firstname
@return $this
Set value for field user_firstname