views.py in django app that runs planout

views.py

from django.shortcuts import render, HttpResponse
from django.http import HttpResponseNotAllowed, HttpResponseBadRequest
import logging
from planout.experiment import SimpleExperiment
from planout.experiment import DefaultExperiment
from planout.namespace import Namespace
from planout.namespace import SimpleNamespace
from planout.ops.random import *
import json

logger = logging.getLogger(__name__)


class ExcerptExperiment(SimpleExperiment):
    def assign(self, params, userid):
        params.name = 'excerpt'
        params.show_excerpt = UniformChoice(
                choices=[True, False],
                unit=userid)
        params.data = { 'show_excerpt': params.show_excerpt };

class ReadingHabitsFeedbackExperiment(SimpleExperiment):
    def assign(self, params, userid):
        params.name = 'reading-habits'
        params.icon = UniformChoice(
                choices=['2713', '2717'],
                unit=userid)
        params.color = UniformChoice(
                choices=['#B8B8CB', '#898989'],
                unit=userid)
        params.bg_color = UniformChoice(
                choices=[[223, 223, 223], [199, 199, 199]], 
                unit=userid)
        params.data = { 'icon': params.icon,
                        'color': params.color,
                        'bg_color': params.bg_color}


class DefaultDerpExperiment(DefaultExperiment):
  def get_default_params(self):
      return {'name': 'default', 'data': {} }

class TheOneTrueNamespace(SimpleNamespace):
  def setup(self):
    self.name = 'the_one_true_namespace'
    self.primary_unit = 'userid'
    self.num_segments = 200
    self.default_experiment_class = DefaultDerpExperiment

  def setup_experiments(self):
    self.add_experiment('excerpt', ExcerptExperiment, 100)
    self.add_experiment('reading-habits', ReadingHabitsFeedbackExperiment, 100)

def home(request):

    if request.method == 'GET':

        user_id = request.GET.get('user_id', '')

        if user_id == '':
            response = HttpResponseBadRequest(
                'Please include a user_id (string) query parameter.')

        else:
            exp = TheOneTrueNamespace(userid=user_id)

            response_data = { 'name': exp.get('name'),
                              'in_experiment': exp.in_experiment,
                              'data': exp.get('data')
            }

            response = HttpResponse(json.dumps(response_data), content_type="application/json")

    else:
        response = HttpResponseNotAllowed('Only GET requests, please.')


    response["Access-Control-Allow-Origin"] = "*"
    response["Access-Control-Allow-Methods"] = "POST, GET, OPTIONS"
    response["Access-Control-Max-Age"] = "1000"
    response["Access-Control-Allow-Headers"] = "*"
    return response