Peewee doesn't set last insert id

Question

I use mysql database. Peewee doesn't set id field after save()

Peewee Model :

class OAuthAccount(BaseModel):
    id = BigIntegerField(primary_key=True,index=True,unique=True , db_column="id")
    oauth_provider_id = IntegerField(null=False)
    oauth_uid = CharField()
    oauth_token = CharField()
    oauth_token_secret = CharField()
    username = CharField()
    inserter = BigIntegerField(null=True,db_column="inserter_id")
    insert_date = DateTimeField(null=True,default=fn.NOW())
    updater = BigIntegerField(null=True,db_column="updater_id")
    update_date = DateTimeField(null=True)
    extra_data = CharField()

The saving code :

oauthUser = OAuthAccount(
                    oauth_provider_id= formData.get("oauth_provider_id"),
                    oauth_uid = formData.get("oauth_uid"),
                    oauth_token = formData.get("oauth_token"),
                    oauth_token_secret=formData.get("oauth_token_secret"),
                    username = formData.get("username"),
                    inserter_id = g.auth.userId(),
                    extra_data = formData.get("extra_data")
                )
oauthUser.save()
print "id => " + str(oauthUser.id)

The output is : id => None

The row successfully inserted to database. But id is still None

Answer 1

I don't understand but it worked when i did this changes:

id = BigIntegerField(primary_key=True,index=True,unique=True , db_column="id")        
->
id = BigIntegerField( db_column="id")

It alse worked with this changes:

id = BigIntegerField(primary_key=True,index=True,unique=True , db_column="id")
->
id = PrimaryKeyField( db_column="id")

When I put primary_key=True it doesn't work.

id = BigIntegerField(primary_key=True , db_column="id")

Maybe it is a bug?

Answer 2

This isn't a bug, per-se, but only the PrimaryKeyField or a field with a sequence defined is considered to be auto-incrementing.

With a bit of code, you could add a custom field type for BigInt primary key field, though.

Answer 3

Instead of:

class OAuthAccount(BaseModel):
    id = BigIntegerField(primary_key=True,index=True,unique=True , db_column="id")

Try:

class OAuthAccount(BaseModel):
    id = PrimaryKeyField()

Then the id field will be set on your model after save and create .

If you need to use a bigint you'll need to subclass PrimaryKeyField .