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Add Session and create_all to database.py

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Steffo 2017-12-20 12:06:12 +01:00
parent 17371f00d3
commit 4ffd1ce8b7
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1 changed files with 11 additions and 3 deletions
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14
database.py
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@ -1,5 +1,6 @@
from sqlalchemy import create_engine, Column, ForeignKey, UniqueConstraint, CheckConstraint from sqlalchemy import create_engine, Column, ForeignKey, UniqueConstraint, CheckConstraint
from sqlalchemy import Integer, BigInteger, String, Numeric, Text from sqlalchemy import Integer, BigInteger, String, Numeric, Text
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base from sqlalchemy.ext.declarative import declarative_base
import configloader import configloader
import telegram import telegram
@ -13,6 +14,9 @@ engine = create_engine(configloader.config["Database"]["engine"])
# Create a base class to define all the database subclasses # Create a base class to define all the database subclasses
TableDeclarativeBase = declarative_base(bind=engine) TableDeclarativeBase = declarative_base(bind=engine)
# Create a Session class able to initialize database sessions
Session = sessionmaker()
# Define all the database tables using the sqlalchemy declarative base # Define all the database tables using the sqlalchemy declarative base
class User(TableDeclarativeBase): class User(TableDeclarativeBase):
"""A Telegram user who used the bot at least once.""" """A Telegram user who used the bot at least once."""
@ -92,7 +96,7 @@ class Transaction(TableDeclarativeBase):
# The internal transaction ID # The internal transaction ID
transaction_id = Column(BigInteger, primary_key=True) transaction_id = Column(BigInteger, primary_key=True)
# The user whose credit is affected by this transaction # The user whose credit is affected by this transaction
user_id = Column(BigInteger, ForeignKey("users.id"), nullable=False) user_id = Column(BigInteger, ForeignKey("users.user_id"), nullable=False)
# The value of this transaction. Can be both negative and positive. # The value of this transaction. Can be both negative and positive.
value = Column(Numeric, nullable=False) value = Column(Numeric, nullable=False)
# Extra notes on the transaction # Extra notes on the transaction
@ -109,8 +113,7 @@ class Transaction(TableDeclarativeBase):
# Extra table parameters # Extra table parameters
__tablename__ = "transactions" __tablename__ = "transactions"
__table_args__ = (UniqueConstraint("provider", "provider_id"), __table_args__ = (UniqueConstraint("provider", "provider_id"),)
CheckConstraint("payment_email ~ '[^@]+@.+'")) # TODO: check this regex
def __str__(self): def __str__(self):
"""Return the correctly formatted transaction value""" """Return the correctly formatted transaction value"""
@ -138,3 +141,8 @@ class Admin(TableDeclarativeBase):
def __repr__(self): def __repr__(self):
return f"<Admin {self.user_id}>" return f"<Admin {self.user_id}>"
# If this script is ran as main, try to create all the tables in the database
if __name__ == "__main__":
TableDeclarativeBase.metadata.create_all()