Async Peewee
Project description
AioPeewee
Asyncio interface for peewee modeled after torpeewee
Implemented database adapters:
[x] aiomysql
[ ] aiopg
[ ] sqlite
Currently 125 test cases have been ported from peewee, not all of them but constantly increases.
Simple Atomic operations (transactions) are also supported, but now well tested.
Install
pip install aiopeewee
Usage
from aiopeewee import AioModel, AioMySQLDatabase
from peewee import CharField, TextField, DateTimeField
from peewee import ForeignKeyField, PrimaryKeyField
db = AioMySQLDatabase('test', host='127.0.0.1', port=3306,
user='root', password='')
class User(AioModel):
username = CharField()
class Meta:
database = db
class Blog(AioModel):
user = ForeignKeyField(User)
title = CharField(max_length=25)
content = TextField(default='')
pub_date = DateTimeField(null=True)
pk = PrimaryKeyField()
class Meta:
database = db
# create connection pool
await db.connect(loop)
# count
await User.select().count()
# async iteration on select query
async for user in User.select():
print(user)
# fetch all records as a list from a query in one pass
users = await User.select()
# insert
user = await User.create(username='kszucs')
# modify
user.username = 'krisztian'
await user.save()
# async iteration on blog set
[b.title async for b in user.blog_set.order_by(Blog.title)]
# close connection pool
await db.close()
# see more in the tests
ManyToMany
Note that AioManyToManyField must be used instead of ManyToMany.
from aiopeewee import AioManyToManyField
class User(AioModel):
username = CharField(unique=True)
class Meta:
database = db
class Note(AioModel):
text = TextField()
users = AioManyToManyField(User)
class Meta:
database = db
NoteUserThrough = Note.users.get_through_model()
async for user in note.users:
# do something with the users
Currently the only limitation I’m aware of immidiate setting of instance relation must be replaced with a method call:
# original, which is not supported
charlie.notes = [n2, n3]
# use instead
await charlie.notes.set([n2, n3])
Serializing
Converting to dict requires the asyncified version of model_to_dict
from aiopeewee import model_to_dict
serialized = await model_to_dict(user)
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