api-client-pydantic 3.1.0

API Client extension for validate and transform requests / responses using pydantic.

Python API Client Pydantic Extension

Installation

pip install api-client-pydantic

Usage

The following decorators have been provided to validate request data and converting json straight to pydantic class.

from apiclient_pydantic import serialize, serialize_all_methods


# serialize request and response data
@serialize(config: Optional[ConfigDict] = None, validate_return: bool = True, response: Optional[Type[BaseModel]] = None)

# wraps all local methods of a class with a decorator 'serialize'.
@serialize_all_methods(config: Optional[ConfigDict] = None)

Usage:

1. Define the schema for your api in pydantic classes.

   from pydantic import BaseModel, Field
   
   
   class Account(BaseModel):
       account_number: int = Field(alias='accountNumber')
       sort_code: int = Field(alias='sortCode')
       date_opened: datetime = Field(alias='dateOpened')
   

2. Add the @serialize decorator to the api client method to transform the response directly into your defined schema.

    @serialize(response=List[Account])
    def get_accounts():
        ...
    # or
    @serialize
    def get_accounts() -> List[Account]:
        ...
   

3. Add the @serialize decorator to the api client method to translate the incoming kwargs into the required dict or instance for the endpoint:

    from apiclient_pydantic import ModelDumped
   
    @serialize
    def create_account(data: AccountHolder):
        # data will be AccountHolder instance
        ...
   
    create_account(data={'last_name' : 'Smith','first_name' : 'John'})
    # data will be a AccountHolder(last_name="Smith", first_name="John")
   
    @serialize
    def create_account(data: ModelDumped[AccountHolder]):
        # data will be exactly a dict
        ...
   
    create_account(data={'last_name' : 'Smith','first_name' : 'John'})
    # data will be a dict {"last_name": "Smith", "first_name": "John"}
   

4. For more convenient use, you can wrap all APIClient methods with @serialize_all_methods.

    from apiclient import APIClient
    from apiclient_pydantic import serialize_all_methods
    from typing import List
   
    from .models import Account, AccountHolder
   
   
    @serialize_all_methods
    class MyApiClient(APIClient):
        def decorated_func(self, data: Account) -> Account:
            ...
   
        def decorated_func_holder(self, data: AccountHolder) -> List[Account]:
            ...
   

Related projects

apiclient-pydantic-generator - Now deprecated.

This code generator creates a ApiClient app from an openapi file.

apiclient-pydantic-generator