CODEWITHSUNDEEP
pythonpython-3.xsqlalchemy
Donald Clark-Charest
Donald Clark-Charest

Reputation: 387

In SQLalchemy, can I have a column with multiple strings?

For the following code, I have the mapping and an example of a "cookie" that contains some info I want to add to the SQLalchemy through python. As you can see some fields like Farmloc, TreasureMap, and Crafts all have multiple entries they point to. I searched and couldn't find much other than Enum, but that was giving me some trouble. Is there a better means than what I've done here. Using Python3.6.1 and SQLalchemy 1.1.11

import csv, sqlalchemy
from sqlalchemy import Column, String, Integer, ForeignKey, Numeric, Boolean
from sqlalchemy.ext.declarative import declarative_base
import sqlite3
from enum import Enum, auto
import enum
from sqlalchemy import create_engine

engine = create_engine('sqlite:///:memory:', echo=True) #TEST DB
    
Base = declarative_base()

class Crystal(Base):
    __tablename__ = 'crystals'
    dbID = Column(Integer, primary_key=True)
    ItemName = Column(String, index=True, nullable=False) #Full name, (ie. Earth Shard, Wind Crystal, Fire Cluster)
    ItemType = Column(String) #Fire, Earth, Wind, Ice, Water ONLY
    ItemPow = Column(String) #Shard, Crystal, Cluster ONLY
    Farmloc = Column(String) #Where player can farm
    Retainer = Column(Boolean) #If retainer can farm
    RetainerQ = Column(Integer) #Quantity retainer gets
    Levee = Column(Boolean) #Any Levees rewards these.
    TreasureMap = Column(String) #False=NO, otherwise Types listed
    Desynthed = Column(String) #False=NO, otherwise Herb1, Herb2, Ore1, etc
    Crafts = Column(String) #Crafts associated with (ie Earth w LWR)
    Price = Column(Integer) #MB price (Should be used as ref for all craftables)

from sqlalchemy.orm import sessionmaker
Session = sessionmaker(bind=engine)
session = Session()
    
cc_cookie = Crystal(dbID = 1,
                        ItemName= 'Wind Cluster',
                        ItemType = 'Wind',
                        ItemPow = 'Cluster',
                        Farmloc = 'The Dravanian Hinterlands, Mor Dhona',
                        Retainer = False,
                        RetainerQ = 0,
                        Levee = False,
                        TreasureMap = 'Dragonskin Treasure Map,Gaganaskin Treasure Map,Gazelleskin Treasure Map,Leather Buried Treasure Map',
                        Desynthed = 'Clary Sage,Furymint,Highland Oregano,Windtea Leaves',
                        Crafts = 'CRP,GSM,LWR,WVR',
                        Price = 500)       


Base.metadata.create_all(engine)

session.add(cc_cookie)
session.commit()

Upvotes: 27

Views: 44805

Answers (1)

Sam Dolan
Sam Dolan

Reputation: 32532

Check out the built-in class sqlalchemy.types.ARRAY

For example:

TreasureMap = Column(ARRAY(String))

Side note: as per convention all column names are all lowercase and under score separated (e.g. treasure_map over TreasureMap.)

Upvotes: 44

Related Questions