RestResponse 3.1.0

A fluent python object for interfacing with RESTful JSON APIs.

RestResponse

Powered by python-autoviv under the hood, RestResponse aims to be a fluent python object for interfacing with RESTful JSON APIs.

Python2 support has been dropped in v3. If you need legacy support, see the v2 branch.

Installation

Add this line to your application's requirements.txt:

RestResponse

And then execute:

$ pip install -r requirements.txt

Or install it yourself as:

$ pip install RestResponse

Usage

Import RestResponse and call parse on any list, dict, or primitive. You can also call loads on serialized json

>>> import RestResponse
>>> import requests
>>> r = requests.get('http://jsonplaceholder.typicode.com/users')
>>> users = RestResponse.parse(r.json())
>>> # or
... users = RestResponse.loads(r.text)
>>> for user in users:
...     print(user.name)
...
Leanne Graham
Ervin Howell
Clementine Bauch
Patricia Lebsack
Chelsey Dietrich
Mrs. Dennis Schulist
Kurtis Weissnat
Nicholas Runolfsdottir V
Glenna Reichert
Clementina DuBuque
>>> user = users[0]
>>> print(user.pretty_print(indent=4))
{
    "username": "Bret",
    "website": "hildegard.org",
    "name": "Leanne Graham",
    "company": {
        "bs": "harness real-time e-markets",
        "name": "Romaguera-Crona",
        "catchPhrase": "Multi-layered client-server neural-net"
    },
    "id": 1,
    "phone": "1-770-736-8031 x56442",
    "address": {
        "suite": "Apt. 556",
        "street": "Kulas Light",
        "geo": {
            "lat": "-37.3159",
            "lng": "81.1496"
        },
        "zipcode": "92998-3874",
        "city": "Gwenborough"
    },
    "email": "[e-mail]"
}
>>> user.name = 'Rest Response'
>>> r = requests.put('http://jsonplaceholder.typicode.com/users/{0}'.format(user.id), json=user)
>>> response = RestResponse.parse(r.json())
>>> print(response.name)
Rest Response
>>> new = RestResponse.parse({})
>>> new.id = 5
>>> if not new.username:
...     new.username = 'New User'
...
>>> new.address.geo.lat = "-42.3433"
>>> new.address.geo.lng = "74.3433"
>>> new.email = '[e-mail]'
>>> print(new.pretty_print())
{
    "username": "New User",
    "email": "[e-mail]",
    "id": 5,
    "address": {
        "geo": {
            "lat": "-42.3433",
            "lng": "74.3433"
        }
    }
}

Callables

Callable properties will be encoded via cloudpickle and base64 prefixed with __callable__: .

>>> import RestResponse
>>> data = RestResponse.parse({'callable': lambda x: x + 1})
>>> data.callable
<function <lambda> at 0x7f92593de9b0>
>>> data.callable(1)
2
>>> pretty_str = data.pretty_print()
>>> print(pretty_str)
{
    "callable": "__callable__: gAJjY2xvdWRwaWNrbGUuY2xvdWRwaWNrbGUKX2ZpbGxfZnVuY3Rpb24KcQAoY2Nsb3VkcGlja2xlLmNsb3VkcGlja2xlCl9tYWtlX3NrZWxfZnVuYwpxAWNjbG91ZHBpY2tsZS5jbG91ZHBpY2tsZQpfYnVpbHRpbl90eXBlCnECVQhDb2RlVHlwZXEDhXEEUnEFKEsBSwFLAktDVQh8AABkAQAXU3EGTksBhnEHKVUBeHEIhXEJVQc8c3RkaW4+cQpVCDxsYW1iZGE+cQtLAVUAcQwpKXRxDVJxDkr/////VQhfX21haW5fX3EPh3EQUnERfXESKFUEbmFtZXETaAtVA2RvY3EUTlUGbW9kdWxlcRVoD1UOY2xvc3VyZV92YWx1ZXNxFk5VB2dsb2JhbHNxF31xGFUEZGljdHEZfXEaVQhkZWZhdWx0c3EbTnV0Ui4="
}
>>> data = RestResponse.loads(pretty_str)
>>> data.callable(1)
2

Binary

Properties detected as binary data will be encoded via base64 prefixed with __binary__: .

>>> import RestResponse
>>> import requests
>>> data = RestResponse.parse({
... 'binary': requests.get('https://cataas.com/cat').content
... })
>>> data.binary
'\xff\xd8\xff\xdb\x00C\x00\x06\x04\x05\x06\x05\x04\x06\x06\x05\x06\x07\x07\x06\x08\n\x10\n\n\t\t\n\x14\x0e\x0f\x0c\x10\x17\x14\x18\x18\x17\x14\x16\x16\x1a\x1d%\x1f\x1a\x1b#\x1c\x16\x16 , #&\')*)\x19\x1f-0-(0%()(\xff\xdb\x00C\x01\x07\x07\x07\n\x08\n\x13\n\n\x13(\x1a\x16\x1a((((((((((((((((((((((((((((((((((((((((((((((((((\xff\xc2\x00\x11\x08\x00\x01\x00\x01\x03\x01"\x00\x02\x11\x01\x03\x11\x01\xff\xc4\x00\x15\x00\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\xff\xc4\x00\x14\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xda\x00\x0c\x03\x01\x00\x02\x10\x03\x10\x00\x00\x01\x90\x07\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x01\x05\x02\x7f\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x03\x01\x01?\x01\x7f\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x02\x01\x01?\x01\x7f\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x06?\x02\x7f\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x01?!\x7f\xff\xda\x00\x0c\x03\x01\x00\x02\x00\x03\x00\x00\x00\x10\xfb\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x03\x01\x01?\x10\x7f\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x02\x01\x01?\x10\x7f\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x01?\x10\x7f\xff\xd9'
>>> pretty_str = data.pretty_print()
>>> print(pretty_str)
{
    "binary": "__binary__: 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"
}
>>> data = RestResponse.loads(pretty_str)
>>> data.binary
'\xff\xd8\xff\xdb\x00C\x00\x06\x04\x05\x06\x05\x04\x06\x06\x05\x06\x07\x07\x06\x08\n\x10\n\n\t\t\n\x14\x0e\x0f\x0c\x10\x17\x14\x18\x18\x17\x14\x16\x16\x1a\x1d%\x1f\x1a\x1b#\x1c\x16\x16 , #&\')*)\x19\x1f-0-(0%()(\xff\xdb\x00C\x01\x07\x07\x07\n\x08\n\x13\n\n\x13(\x1a\x16\x1a((((((((((((((((((((((((((((((((((((((((((((((((((\xff\xc2\x00\x11\x08\x00\x01\x00\x01\x03\x01"\x00\x02\x11\x01\x03\x11\x01\xff\xc4\x00\x15\x00\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\xff\xc4\x00\x14\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xff\xda\x00\x0c\x03\x01\x00\x02\x10\x03\x10\x00\x00\x01\x90\x07\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x01\x05\x02\x7f\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x03\x01\x01?\x01\x7f\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x02\x01\x01?\x01\x7f\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x06?\x02\x7f\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x01?!\x7f\xff\xda\x00\x0c\x03\x01\x00\x02\x00\x03\x00\x00\x00\x10\xfb\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x03\x01\x01?\x10\x7f\xff\xc4\x00\x14\x11\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x02\x01\x01?\x10\x7f\xff\xc4\x00\x14\x10\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xda\x00\x08\x01\x01\x00\x01?\x10\x7f\xff\xd9'

NoneProp

It should be noted that missing referenced properties, including nested, are gracefully falsey.

>>> import RestResponse
>>> data = RestResponse.parse({})
>>> data.property.is_none
None
>>> bool(data.property.is_none)
False
>>> isinstance(data.property.is_none, RestResponse.NoneProp)
True
>>> 'some data' in data.property.is_none
False
>>> [x for x in data.property.is_none]
[]
>>> data.property.is_none = None
>>> isinstance(data.property.is_none, RestResponse.NoneProp)
False
>>> print(data.pretty_print())
{
    "property": {
        "is_none": null
    }
}

SQLAlchemy ORM

RestResponse uses a Mutable mixin provided by SQLAlchemy for interfacing with databases. The following (Flask) snippet should get you started:

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from RestResponse.orm.sqlalchemy import RESTResponse


app = Flask(__name__)
db = SQLAlchemy(app)


class SomeModel(db.Model):
    id = db.Column(db.Integer(), primary_key=True)
    data = db.Column(RESTResponse(), nullable=False)

    def __init__(self, data):
        self.data = data # data should be json serializable

Data will be saved to the database as a serialized JSON blob. When data is loaded it will be coerced to the underlying RestResponseObj

ApiModel

Inherit RestResponse.ApiModel to facilitate typing out API models. Please note your properties should NOT start with _. ApiModel._data setter ensures that passed in data conforms to your properties, effectively filtering out underscored properties identified via dir(). This behavior can be overriden by adding properties to __opts__['_overrides'] (Note: __opts__ must be updated before setting _data).

For convenience ApiModel includes helper methods for property integrity. These include:

1. _set_int, _get_int
2. _set_string, _get_string
3. _set_date, _get_date
4. _set_datetime, _get_datetime
5. _set_float, _get_float
6. _set_bool, _get_bool

You can initalize ApiCollection with one of these helpers (or define your own), or another object such as Reference below.

Consider the following snippet:

from RestResponse import ApiModel, ApiCollection


class Model(ApiModel):
    def __init__(self, data):
        self.__opts__['_overrides'] = ['_bar']
        self._data = data

    # this _foo property will be ignored on init
    @property
    def _foo(self):
        return self._get_string(self._data._foo)

    @_foo.setter
    def _foo(self, _foo):
        self._data._foo = self._set_string(_foo)

    @property
    def _bar(self):
        return self._get_string(self._data._bar)

    @_bar.setter
    def _bar(self, _bar):
        self._data._bar = self._set_string(_bar)

    @property
    def id(self):
        return self._get_int(self._data.id)

    @id.setter
    def id(self, id):
        self._data.id = self._set_int(id)

    @property
    def reference(self):
        if not self._data.reference:
            self._data.reference = Reference()
        return Reference(self._data.reference)

    @reference.setter
    def reference(self, reference):
        self._data.reference = Reference(reference)

    @property
    def int_collection(self):
        if not self._data.int_collection:
            self._data.int_collection = ApiCollection(self._set_int)
        return self._data.int_collection

    @int_collection.setter
    def int_collection(self, int_collection):
        self._data.int_collection = ApiCollection(self._set_int, int_collection)

    @property
    def ref_collection(self):
        if not self._data.ref_collection:
            self._data.ref_collection = ApiCollection(Reference)
        return self._data.ref_collection

    @ref_collection.setter
    def ref_collection(self, ref_collection):
        self._data.ref_collection = ApiCollection(Reference, ref_collection)


class Reference(ApiModel):
    def __init__(self, data):
        self._data = data

    @property
    def id(self):
        return self._get_int(self._data.id)

    @id.setter
    def id(self, id):
        self._data.id = self._set_int(id)

Then initialize with RestObject, dict, ApiModel, or serialized JSON

>>> model = Model({
    'id': 5,
    'ref': {
        'id': 5,
        'foo': 'bar'
    },
    'int_collection': [1, 2, 3],
    'ref_collection': [
        {
            'id': 1,
        },
        {
            'id': 2,
        }
    ],
    'foo': 'bar',
    '_foo': '_bar',
    '_bar': 'foo'
})
>>> print(model._data.pretty_print())
{
    "int_collection": [
        1,
        2,
        3
    ],
    "ref": {
        "id": 5
    },
    "ref_collection": [
        {
            "id": 1
        },
        {
            "id": 2
        }
    ],
    "id": 5,
    "_bar": "foo"
}
>>> assert '_foo' not in model._data
>>> assert '_bar' in model._data
>>> assert 'foo' not in model._data
>>> assert 'foo' not in model.ref._data
>>> type(model._data)
<class 'RestResponse.objects.RestObject'>

Note: ApiModel will NOT decode/encode binary/callable types by default. You'll need to turn this behavior on by overriding ApiModel.__opts__:

Model.__opts__ = {
    'encode_binary': True,
    'encode_callable': True,
    'decode_binary': True,
    'decode_callable': True
}

Testing

Install test dependencies with pipenv.

$ pip install pipenv
$ pipenv install -d
$ ./test.sh

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/tysonholub/RestResponse.git. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

This package is available as open source under the terms of the MIT License.