Simple wrapper for edgedb python client with pydantic and anntotations.
pip install -e git+https://github.com/vitaliy-grusha/edgedb-query.git@main#egg=edgedbquery
from __future__ import annotations
from functools import cached_property
from datetime import datetime
from typing import Optional, List
from uuid import UUID
import edgedb
from edgedbquery import Query, QueryMethod, Model, LazyModel
client = edgedb.blocking_client.create_client(...)
class User(Model):
id: UUID
email: str
update_datetime: datetime
create_datetime: datetime
class EdgeDB:
query_required_fields = """
id,
email,
update_datetime,
create_datetime
"""
@classmethod
def get_by_id(cls, _id: UUID):
return (
Query(client, QueryMethod.SINGLE_REQUIRED)
.make(
f"""
SELECT User {{
{cls.EdgeDB.query_required_fields}
}}
FILTER .id = <uuid>$id
""",
id=_id,
)
.parse(User)
)
@classmethod
def create(cls, email: str):
return (
Query(client, QueryMethod.SINGLE_REQUIRED)
.make(
f"""
SELECT (
INSERT User {{
email := <str>$email,
update_datetime := std::datetime_current(),
create_datetime := std::datetime_current()
}}
) {{
{cls.EdgeDB.query_required_fields}
}}
""",
email=email,
)
.parse(User)
)
class EntityLazy(LazyModel):
@cached_property
def lazy(self):
return Entity.get_by_id(self.id)
class Entity(Model):
id: UUID
user: User
parent: Optional[EntityLazy] = None
title: str
update_datetime: datetime
create_datetime: datetime
class EdgeDB:
query_required_fields = f"""
id,
title,
user: {{
{User.EdgeDB.query_required_fields}
}},
parent: {{
id
}},
update_datetime,
create_datetime
"""
@classmethod
def get_by_id(cls, _id: UUID):
return (
Query(client, QueryMethod.SINGLE_REQUIRED)
.make(
f"""
SELECT Entity {{
{cls.EdgeDB.query_required_fields}
}}
FILTER .id = <uuid>$id
""",
id=_id,
)
.parse(Entity)
)
@classmethod
def create(cls, title: str, user_id: UUID, parent_id: UUID = None):
return (
Query(client, QueryMethod.SINGLE_REQUIRED)
.make(
f"""
WITH
user := (SELECT User filter .id = <uuid>$user_id),
parent := (SELECT Entity filter .id = <optional uuid>$parent_id)
SELECT (
INSERT Entity {{
title := <str>$title,
user := user,
parent := parent,
update_datetime := std::datetime_current(),
create_datetime := std::datetime_current()
}}
) {{
{cls.EdgeDB.query_required_fields}
}}
""",
title=title,
user_id=user_id,
parent_id=parent_id,
)
.parse(Entity)
)
@classmethod
def get_all(cls):
return (
Query(client, QueryMethod.MULTIPLE).make(f"""
SELECT Entity {{
{cls.EdgeDB.query_required_fields}
}}
""").parse(List[Entity])
)
user = User.create('[email protected]') # Returns User model
entity = Entity.create('Title', user.id) # Returns Entity model
print(entity.user)
entity_child = Entity.create('Title child', user.id, entity.id)
print(entity_child.parent.lazy) # Runs a new query to return parent entity and caches it
entities = Entity.get_all() # Returns List[Entity]
print(entities)