def user_and_stage_is_valid(self, uid, sid):
if uid > 0 and sid > 0:
users_dao = UsersDao()
cur_user = users_dao.get_user_by_uid(uid)
if cur_user:
stage_dao = StageDao()
cur_stage = stage_dao.get_stage_by_sid(sid)
if cur_stage:
return True
else:
return False
else:
return False
else:
return False
def __init__(self):
self.dao = StageDao()
class StageManager:
def __init__(self):
self.dao = StageDao()
def clear(self):
all_stages = self.dao.get_all_stages()
for stage in all_stages:
self.dao.delete_stage(stage)
def add_stage(self, sid, name, info):
if sid < 0:
return 'Sid invalid.'
if sid == 0:
all_stages = self.dao.get_all_stages()
if len(all_stages) > 0:
sid = all_stages[-1].sid + 1
else:
sid = 1
target = self.dao.get_stage_by_sid(sid)
if target:
return 'Stage #' + str(sid) + 'already exists.'
else:
self.dao.create_stage(sid, name, info)
return 'Succeeded, new stage\'s sid: #' + str(sid)
def get_stage(self, sid):
if sid <= 0:
return None
else:
cur_stage = self.dao.get_stage_by_sid(sid)
if cur_stage:
return cur_stage
else:
return None
def get_all_stages(self):
return self.dao.get_all_stages()
def delete_stage(self, sid):
if sid <= 0:
return 'Sid invalid.'
else:
cur_stage = self.dao.get_stage_by_sid(sid)
if cur_stage:
self.dao.delete_stage(sid)
return 'Succeeded.'
else:
return 'Succeeded. Stage #' + str(sid) + ' does not exist, nothing is done.'
def update_stage(self, sid, new_name, new_info):
if sid <= 0:
return 'Sid invalid.'
cur_stage = self.dao.get_stage_by_sid(sid)
if cur_stage:
if len(new_name) > 0:
self.dao.update_name(cur_stage, new_name)
if len(new_info) > 0:
self.dao.update_info(cur_stage, new_info)
return 'Succeeded.'
else:
return 'Stage #' + str(sid) + 'does not exist.'