SQL OperationalError due to missing quotation marks around default values

[stlehmann]

Error description

When using pw_migrate with the --auto flag to add a new CharField with a default value to a table it produces code like this:

@migrator.create_model
class Color(pw.Model):
    id = pw.AutoField()
    name = pw.CharField(constraints=[SQL("DEFAULT New Color")], max_length=255)

The last line will lead to an Operational error because there are quotation marks missing around the default values.

System configuration

• Operarating System: Windows 10
• Python Version: Python 3.7.0 64bit
• Peewee Version: 3.6.4
• peewee_migrate: develop branch
• database engine: sqlite