"""

This example demonstrates most basic operations with single model

"""

from tortoise import fields, run_async

from tortoise.contrib.test import init_memory_sqlite

from tortoise.models import Model

class Event(Model):

id = fields.IntField(primary_key=True)

name = fields.TextField()

datetime = fields.DatetimeField(null=True)

username = fields.CharField(max_length=150, unique=True, db_index=True)

class Meta:

table = "event"

def __str__(self):

return self.name

@init_memory_sqlite

async def run() -> None:

event = await Event.create(name="Test", username="test")

await Event.filter(id=event.id).update(name="Updated name")

print(await Event.filter(username="test").first())

# >>> Updated name

await Event(name="Test 2", username="test2").save()

print(await Event.all().values_list("id", flat=True))

# >>> [1, 2]

print(await Event.all().values("id", "name"))

# >>> [{'id': 1, 'name': 'Updated name'}, {'id': 2, 'name': 'Test 2'}]

if __name__ == "__main__":

run_async(run())