def add_participant(self, user_id):
if self.slots <= 0:
raise ValueError("no slots left")
db.execute('BEGIN')
query = ('INSERT INTO lunch_participants (lunch_id, user_id) '
'VALUES (%s, %s)')
params = (int(self.id), int(user_id))
id = db.execute(query, *params)
try:
db.execute('UPDATE lunch SET slots=slots-1 WHERE id = %s',
int(self.id))
except:
db.execute('ROLLBACK')
return None
db.execute('COMMIT')
return id
def create(cls, food, place, lunch_date, creator_id, slots, tags=[]):
query = ('INSERT INTO lunch '
'(food, place, lunch_date, creator_id, slots) '
'VALUES (%s, %s, %s, %s, %s)')
params = (food, place, lunch_date, creator_id, slots)
db.execute('BEGIN')
id = db.execute(query, *params)
new_tags = []
try:
for tag in tags:
new_tags.append(LunchTag.create(id, tag))
except:
db.execute('ROLLBACK')
return None
db.execute('COMMIT')
return cls(id, food, place, lunch_date, creator_id, tags)
def create(cls, lunch_id, tag):
query = 'INSERT INTO lunch_tags (lunch_id, tag) VALUES (%s, %s)'
params = (lunch_id, tag)
id = db.execute(query, *params)
return cls(id, lunch_id, tag)
def create(cls, id, name, avatar_url, access_key, access_secret, handle):
query = ('INSERT INTO users (id, name, avatar_url, access_key, '
'access_secret, handle) VALUES (%s, %s, %s, %s, %s, %s)')
params = (id, name, avatar_url, access_key, access_secret, handle)
db.execute(query, *params)
return cls(id, name, avatar_url, access_key, access_secret, handle)
