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Python

Posted by João Elvas
João Elvas
5,400 Points

Python peewee foreign keys

Hello guys,

So I asked this on stackoverflow yesterday but I still did not get any answer.

So iam using peewee to create databases in python.

class BaseModel(Model):
    class Meta:
        database = db

class Phone(BaseModel):
    '''Phone database model.'''
     model = CharField(max_length=15, unique=True, primary_key=True)

class Imei(BaseModel):
    '''Imei database model.'''
    imei = CharField(max_length=15, unique=True, primary_key=True)
    model = ForeignKeyField(Phone, to_field="model", related_name="imei's from model")
    registered = BooleanField(default=False)
    timestamp = DateTimeField(default=datetime.datetime(2014, 1, 1, 0, 0))
    email = CharField(max_length=50, null=True)

What I want to achieve here is that whenever I insert on "Imei" table, it does not insert if the model is not listed on the "Phone" table.

I did that using foreign key, but the problem is that when I insert on imei table, with the phone table empty, it inserts with no problem.

How can I solve this?

João Elvas
João Elvas
5,400 Points

Kenneth Love can you give a look please?