Aiohttp pydantic - Aiohttp View to validate and parse request
=============================================================

How to install
--------------

.. code-block:: bash

    $ pip install aiohttp_pydantic


Example:
--------

.. code-block:: python3

    from typing import Optional

    from aiohttp import web
    from aiohttp_pydantic import PydanticView
    from pydantic import BaseModel

    # Use pydantic BaseModel to validate request body
    class ArticleModel(BaseModel):
        name: str
        nb_page: Optional[int]


    # Create your PydanticView and add annotations.
    class ArticleView(PydanticView):

        async def post(self, article: ArticleModel):
            return web.json_response({'name': article.name,
                                      'number_of_page': article.nb_page})

        async def get(self, with_comments: Optional[bool]):
            return web.json_response({'with_comments': with_comments})


    app = web.Application()
    app.router.add_view('/article', ArticleView)
    web.run_app(app)


.. code-block:: bash

    $ curl -X GET http://127.0.0.1:8080/article?with_comments=a
    [
      {
        "loc": [
          "with_comments"
        ],
        "msg": "value could not be parsed to a boolean",
        "type": "type_error.bool"
      }
    ]

    $ curl -X GET http://127.0.0.1:8080/article?with_comments=yes
    {"with_comments": true}

    $ curl -H "Content-Type: application/json" -X post http://127.0.0.1:8080/article --data '{}'
    [
      {
        "loc": [
          "name"
        ],
        "msg": "field required",
        "type": "value_error.missing"
      }
    ]

    $ curl -H "Content-Type: application/json" -X post http://127.0.0.1:8080/article --data '{"name": "toto", "nb_page": "3"}'
    {"name": "toto", "number_of_page": 3}