ormar | python async orm with fastapi in mind | Object-Relational Mapping library
kandi X-RAY | ormar Summary
kandi X-RAY | ormar Summary
The ormar package is an async mini ORM for Python, with support for Postgres, MySQL, and SQLite.
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Top functions reviewed by kandi - BETA
- Define a foreign key constraint
- Given a to_to_model and a to_to_model and to_to_model
- Get the database alias
- Get the column alias
- Returns a dict representation of the object
- Return the set of foreign field names
- Add a set of primary keys to exclude
- Update exclude with related fields
- Construct a model instance from a pk value
- Removes all items from the relation
- Adds a relationship
- Prefetch related items
- Returns the text clause for the filter
- Adds an item to the relation
- Get a list of values
- Return a list of values
- Persist the model
- Updates the Forward references field definitions
- Update the query set according to the given columns
- Filter the query and return all books
- Process keyword arguments
- Create a ManyToMany relationship proxy model
- Copy data from parent to parent model
- Read the book
- Fetch a single result from the query
- Update the relation
ormar Key Features
ormar Examples and Code Snippets
from pydantic import BaseModel, UUID4
class User(BaseModel):
first_name: str
last_name: str
id: UUID4
from uuid import UUID
# from pydantic.dataclasses import dataclass
from dataclasses import dataclass
@dataclass
class User:
fir
from uuid import UUID
import ormar
from ormar_postgres_extensions import PostgresUUID
class MyModel(ormar.Model):
uid: UUID = PostgresUUID(unique=True, nullable=False)
import ormar
import sqlalchemy
from ormar_postgres_extensions import Array
def get_db_uri(self) -> str:
# set the below in your environment file when running tests
if self.TESTING:
return "sqlite:///../db.sqlite"
if self.PRODUCTION:
return self._get_db_uri(
user="root",
Community Discussions
Trending Discussions on ormar
QUESTION
I am trying ormar with FastAPI and struggling with testing. Because I use Django in the majority of my projects, I am trying to separate my databases between development and testing. But I am struggling to do this.
The goal is basically, use PostgreSQL for development/production, but switch to SQLite when running pytest. And remove all data from the SQLite database when tests are done.(Imagine Django+Docker dev environment)
I've tried the following from the ormar documentation, but no luck.
...ANSWER
Answered 2022-Jan-12 at 06:42I struggled there too. First of all this discussion will help you. Crux here. You need to use an environment variable that points to your sqlite db. I did use BaseSettings from FastAPI and added this method there
QUESTION
I want to migrate through Alembic, but something doesn't work. I don't understand what exactly I'm doing wrong.
My alembic .env
...ANSWER
Answered 2021-Apr-03 at 15:39The error is caused by usage of declarative_base()
from sqlalchemy
.
Sqlalchemy
consists of two main parts:
ORM
- which is a object relational mapping part with Models, relations, queries etc.core
- which is much more 'raw' and basic and in general it's related to table and columns creation, as well as queries generation (joins, where clause etc.)
In ormar
only the latter is used and you cannot apply any concept from the ORM
part. In fact ormar
is kind of (simplified by async
and pydantic
based) equivalent of the ORM
part.
That means that you cannot inherit from Base
<- that's the orm part I mentioned.
So your sample should look something like following snippets:
alembic .env
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