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serializers.py
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serializers.py
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# -*- coding: utf-8 -*-
#########################################################################
#
# Copyright 2018, GeoSolutions Sas.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.
#
#########################################################################
from django.contrib.auth import get_user_model
from rest_framework import serializers
from .models import MapStoreResource
import re
import base64
import logging
logger = logging.getLogger(__name__)
class JSONSerializerField(serializers.Field):
""" Serializer for JSONField -- required to make field writable"""
id = serializers.ReadOnlyField()
def to_internal_value(self, data):
return data
def to_representation(self, value):
try:
return value.blob
except Exception:
return value
class JSONArraySerializerField(serializers.Field):
""" Serializer for JSONField -- required to make field writable"""
id = serializers.ReadOnlyField()
def to_internal_value(self, data):
return data
def to_representation(self, value):
if value:
attributes = []
for _a in list(value.all()):
data = ''
if re.match(r'b\'(.*)\'', _a.value):
data = re.match(r'b\'(.*)\'', _a.value).groups()[0]
attributes.append({
"name": _a.name,
"type": _a.type,
"label": _a.label,
"value": base64.b64decode(data).decode('utf8')
})
else:
attributes = []
return attributes
class MapLayersJSONArraySerializerField(serializers.Field):
def to_internal_value(self, data):
return data
def to_representation(self, value):
if value:
from geonode.maps.models import Map
from geonode.maps.api.serializers import MapLayerSerializer
# from geonode.layers.api.serializers import LayerSerializer
map = Map.objects.get(id=value)
# return [
# MapLayerSerializer(embed=True, many=True).to_representation(map.layers),
# LayerSerializer(embed=True, many=True).to_representation(map.local_layers)
# ]
return MapLayerSerializer(embed=True, many=True).to_representation(map.layers)
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = get_user_model()
fields = ('url', 'username', 'email', 'is_staff', 'is_active', 'is_superuser',)
class MapStoreResourceSerializer(serializers.HyperlinkedModelSerializer):
user = serializers.CharField(source='user.username',
read_only=True)
layers = MapLayersJSONArraySerializerField(source='id',
read_only=True)
def __init__(self, *args, **kwargs):
# Instantiate the superclass normally
super(MapStoreResourceSerializer, self).__init__(*args, **kwargs)
_full = self.context['request'].query_params.get('full')
if _full:
self.fields['data'] = JSONSerializerField(read_only=False)
self.fields['attributes'] = JSONArraySerializerField(read_only=False)
class Meta:
model = MapStoreResource
fields = ('id', 'user', 'layers', 'name', 'creation_date', 'last_update')