pyramid_skue 0.1.0

pyramid_skue

pyramid_skue is a library for builidn REST API services on top of Pyramid framework.

Installation

Requires Pyramid >= 1.5a2

Install with pip:

pip install pyramid_skue

or using easy_install:

easy_install pyramid_skue

Usage

Create api python package inside your main project package.

Populate api/resourses.py with the defenition of resource:

from pyramid_skue.rest.api import ResourceDescription
from pyramid_skue.rest.api import HttpMethodDescription
from pyramid_skue.rest.api import HttpParameterDescription
from pyramid_skue.http import CommonResponse
from pyramid_skue.rest.resources import DocumentResource
from .response import MessageResourceJson

class MessageResource(DocumentResource):
    """Represents resource for readin/creating messages."""

    # Resource definition
    def describe_resource(self):
        """Self description.

        """
        description = 'Author of the message'
        author_param = HttpParameterDescription(
            'author', 'string', is_required=True,
            description=description)

        description = 'Title of the message'
        title_param = HttpParameterDescription(
            'title', 'string', is_required=True,
            description=description)

        description = 'Title of the message (optional)'
        title_optional_param = HttpParameterDescription(
            'title', 'string', is_required=False,
            description=description)

        description = 'Message body'
        body_param = HttpParameterDescription(
            'body', 'string', is_required=True,
            description=description)

        description = "Get existing messages"
        get_method = HttpMethodDescription(
            'GET', parameters=[title_optional_param],
            description=description)

        description = "Post message"
        post_method = HttpMethodDescription(
            'POST', parameters=[author_param, title_param, body_param],
            description=description)

        description = "Create/Get messages"
        resource = ResourceDescription(
            'MessageResource', url="/api/message",
            methods=[get_method, post_method],
            description=description)
        return resource

    def read_resource(self):
        """
        Return messages. Can be filtered by title.
        Assuming that ``storage`` is some database you're using.

        """
        title = self.payload.get('title')
        if title:
            messages = storage.filter(title).all()
        else:
            messages = storage.all()

        body = MessageResourceJson(messages)
        return CommonResponse.success(body)

    def create_resource(self):
        """Create message.

        ``storage`` is some hypothetical database.

        """
        author = self.payload.get('author')
        title = self.payload.get('title')
        body = self.payload.get('body')

        message_id = storage.create_message(author=author, title=title, body=body)
        resource_uri = self.get_resoruce_uri(message_id)

        return CommonResponse.resource_created(resource_uri)

Then add api/response.py:

from pyramid_skue.json.utils import ResourceJSONRepresentation

class MessageResourceJson(ResourceJSONRepresentation):
    """Represents a JSON response for MessageResource."""
    def __init__(self, messages):
        ResourceJSONRepresentation.__init__(self, 'MessageResource')

        self.objects = []

        for message in messages:
            self.objects.append({
                'author': message.author,
                'title': message.title,
                'body': message.body})

Now register the views in your __init__.py:

config.add_route('api-message', '/api/message')
config.add_view('your_app.api.resources.MessageResource',
                route_name='api-message',
                renderer='string',
                permission='view',  # whatever permission you like
                check_csrf=True)

It’s better to secure your views agains CSRF attacs, look at the pyramid’s documentation.

Contacts

The project is maintained by Cyril Panshine (@CyrilPanshine). Bug reports and pull requests are very much welcomed!

0.1.0

Initial version