Quick Start

Examples

Examples are in the examples/ directory of this repo.

Installation

Install the package

pip install pydantic-sqs

Quick Usage

Import the Store, the RedisConfig and the Model classes.

Store and RedisConfig let you configure and customize the connection to your redis instance. Model is the base class for your ORM models.

from pydantic_sqs import RedisConfig, Model, Store

# Create models as you would create pydantic models i.e. using typings
class Book(Model):
    _primary_key_field: str = 'title'
    title: str
    author: str
    published_on: date
    in_stock: bool = True

# Do note that there is no concept of relationships here
class Library(Model):
    # the _primary_key_field is mandatory
    _primary_key_field: str = 'name'
    name: str
    address: str

# Create the store and register your models
store = Store(name='some_name', redis_config=RedisConfig(db=5, host='localhost', port=6379),life_span_in_seconds=3600)
store.register_model(Book)
store.register_model(Library)

# Sample books. You can create as many as you wish anywhere in the code
books = [
    Book(title="Oliver Twist", author='Charles Dickens', published_on=date(year=1215, month=4, day=4),
        in_stock=False),
    Book(title="Great Expectations", author='Charles Dickens', published_on=date(year=1220, month=4, day=4)),
    Book(title="Jane Eyre", author='Charles Dickens', published_on=date(year=1225, month=6, day=4), in_stock=False),
    Book(title="Wuthering Heights", author='Jane Austen', published_on=date(year=1600, month=4, day=4)),
]
# Some library objects
libraries = [
    Library(name="The Grand Library", address="Kinogozi, Hoima, Uganda"),
    Library(name="Christian Library", address="Buhimba, Hoima, Uganda")
]

async def work_with_orm():
  # Insert them into redis
  await Book.insert(books)
  await Library.insert(libraries)

  # Select all books to view them. A list of Model instances will be returned
  all_books = await Book.select()
  print(all_books) # Will print [Book(title="Oliver Twist", author="Charles Dickens", published_on=date(year=1215, month=4, day=4), in_stock=False), Book(...]

  # Or select some of the books
  some_books = await Book.select(ids=["Oliver Twist", "Jane Eyre"])
  print(some_books) # Will return only those two books

  # Or select some of the columns. THIS RETURNS DICTIONARIES not MODEL Instances
  # The Dictionaries have values in string form so you might need to do some extra work
  books_with_few_fields = await Book.select(columns=["author", "in_stock"])
  print(books_with_few_fields) # Will print [{"author": "'Charles Dickens", "in_stock": "True"},...]

  # Update any book or library
  await Book.update(_id="Oliver Twist", data={"author": "John Doe"})

  # Delete any number of items
  await Library.delete(ids=["The Grand Library"])