gistfile1.py

from django.forms import widgets
from datapoint.models import Datapoint, Annotation
from rest_framework import serializers
from rest_framework.exceptions import ParseError
from tags.serializers import TagSerializer
from tags.models import Tag
from users.serializers import UserSerializer
import simplejson as json


class Range():
    def __init__(self, start, end, startOffset, endOffset):
        self.start = start
        self.end = end
        self.startOffset = startOffset
        self.endOffset = endOffset


class RangeSerializer(serializers.BaseSerializer):
    start = serializers.CharField(max_length=50)
    end = serializers.CharField(max_length=50)
    startOffset = serializers.IntegerField()
    endOffset = serializers.IntegerField()

    def to_representation(self, obj):
        return '"ranges: "' + json.dumps(obj.__dict__)

    def to_internal_value(self, data):
        range_array = json.loads(data.get('ranges'))

        return Range(range_array.start, range_array.end, range_array.startOffset, range_array.endOffset)


class DatapointSerializer(serializers.ModelSerializer):
    tags = TagSerializer(many=True, required=False)

    class Meta:
        model = Datapoint
        fields = ('pk', 'owner', 'project', 'collections', 'name',
                  'description', 'author', 'source', 'url', 'publish_date',
                  'tags')


class AnnotationSerializer(serializers.Serializer):
    pk = serializers.CharField(label="id")
    annotator_schema_version = serializers.CharField(max_length=8, allow_blank=True, required=False)
    created = serializers.DateTimeField()
    modified = serializers.DateTimeField()
    text = serializers.CharField()
    quote = serializers.CharField()
    uri = serializers.URLField(max_length=200, min_length=None, allow_blank=True, required=False)
    ranges = RangeSerializer()
    user = serializers.CharField()
    tags = TagSerializer(many=True, required=False)