open-webui/backend/open_webui/internal/migrations/009_add_models.py
Timothy Jaeryang Baek d3d161f723 wip
2024-12-10 00:54:13 -08:00

62 lines
2.1 KiB
Python

"""Peewee migrations -- 009_add_models.py.
Some examples (model - class or model name)::
> Model = migrator.orm['table_name'] # Return model in current state by name
> Model = migrator.ModelClass # Return model in current state by name
> migrator.sql(sql) # Run custom SQL
> migrator.run(func, *args, **kwargs) # Run python function with the given args
> migrator.create_model(Model) # Create a model (could be used as decorator)
> migrator.remove_model(model, cascade=True) # Remove a model
> migrator.add_fields(model, **fields) # Add fields to a model
> migrator.change_fields(model, **fields) # Change fields
> migrator.remove_fields(model, *field_names, cascade=True)
> migrator.rename_field(model, old_field_name, new_field_name)
> migrator.rename_table(model, new_table_name)
> migrator.add_index(model, *col_names, unique=False)
> migrator.add_not_null(model, *field_names)
> migrator.add_default(model, field_name, default)
> migrator.add_constraint(model, name, sql)
> migrator.drop_index(model, *col_names)
> migrator.drop_not_null(model, *field_names)
> migrator.drop_constraints(model, *constraints)
"""
from contextlib import suppress
import peewee as pw
from peewee_migrate import Migrator
with suppress(ImportError):
import playhouse.postgres_ext as pw_pext
def migrate(migrator: Migrator, database: pw.Database, *, fake=False):
"""Write your migrations here."""
@migrator.create_model
class Model(pw.Model):
id = pw.TextField(unique=True)
user_id = pw.TextField()
base_model_id = pw.TextField(null=True)
name = pw.TextField()
meta = pw.TextField()
params = pw.TextField()
created_at = pw.BigIntegerField(null=False)
updated_at = pw.BigIntegerField(null=False)
class Meta:
table_name = "model"
def rollback(migrator: Migrator, database: pw.Database, *, fake=False):
"""Write your rollback migrations here."""
migrator.remove_model("model")