fix same-role bug only checking current_user not user
fix same-role bug only checking current_user not user

final-year-project/doubtfire-api,alexcu/doubtfire-api,jakerenzella/doubtfire-api,jakerenzella/doubtfire-api,jakerenzella/doubtfire-api,jakerenzella/doubtfire-api,final-year-project/doubtfire-api,final-year-project/doubtfire-api,alexcu/doubtfire-api,jakerenzella/doubtfire-api,alexcu/doubtfire-api,doubtfire-lms/doubtfire-api,doubtfire-lms/doubtfire-api,doubtfire-lms/doubtfire-api,alexcu/doubtfire-api,doubtfire-lms/doubtfire-api,doubtfire-lms/doubtfire-api,jakerenzella/doubtfire-api,alexcu/doubtfire-api,final-year-project/doubtfire-api,alexcu/doubtfire-api,final-year-project/doubtfire-api,doubtfire-lms/doubtfire-api,doubtfire-lms/doubtfire-api,jakerenzella/doubtfire-api