lhmisho
commented
5 years ago It's worked for me ...
numbers = models.ListField(blank=True, null=True, default=[ ])Open ahmedakef opened 6 years ago
lhmisho
commented
5 years ago It's worked for me ...
numbers = models.ListField(blank=True, null=True, default=[ ])
txusdumort
commented
5 years ago hi.
I've a similar problem, wen the context is described below.
I'm using MongoDB the connection is provided by Djongo, over is being used DRF to manage all request to mi API.
My data (profile) is structured like next Json object
{
"name" : "profile name",
"description" : "this is a description",
"params" : "X1, X2,X3, etc",
"config" : "CONFIG OF DEVICE",
"user" : {
"name" : "user name",
"middle_name" : "test middle name",
"last_name" : "test last name",
"email" : "test@test.com",
"institute" : {
"name" : "MIT",
"place" : {
"coordinates" : [ 30.0, 101.0, 0.0 ],
"type" : "Point"
},
"country" : "US"
}
},
"place" : {
"coordinates" : [ 90.0, 901.0, 10.0 ],
"type" : "Point"
},
"devices" : [
{
"name" : "DEVICE 1",
"verification_code" : "",
"verificated" : 0,
"configuration" : "kjk",
"places" : [
{
"coordinates" : [ 30.0, 101.0, 0.0 ],
"type" : "Point"
},
{
"coordinates" : [ 31.0, 102.0, 1.0 ],
"type" : "Point"
}
]
}
]
}I know, the coordinates are wrong, but is just for test.
Well I send that object to my view and then to the ProfileSerializer, this get the responsible to check the embedded objects (each one have your own serializer). After checking data, the info is saved without problem as you can see in next picture:
But the problem is when I try to. retrieve all profiles. Just the coordinates are null, Other embedded objects are retrieved in good way, only the Place Object is malformed. Next, I'll show you the response:
[
{
"id": 22,
"name": "profile name",
"description": "this is a description",
"params": "X1, X2,X3, etc",
"config": "CONFIG OF DEVICE",
"user": {
"name": "user name",
"middle_name": "test middle name",
"last_name": "test last name",
"email": "test@test.com",
"institute": {
"name": "MIT",
"place": {
"coordinates": **null**,
"type": "Point"
},
"country": "US",
"created_at": "2019-03-21T20:43:33.928000Z"
},
"created_at": "2019-03-21T20:43:33.959000Z"
},
"place": {
"coordinates": **null**,
"type": "Point"
},
"devices": [
{
"name": "DEVICE 1",
"verificated": 0,
"configuration": "kjk",
"places": [
{
"coordinates": **null**,
"type": "Point"
},
{
"coordinates": **null**,
"type": "Point"
}
],
"created_at": "2019-03-21T20:43:33.898000Z"
}
],
"created_at": "2019-03-21T20:43:33.976000Z"
}
]For this questions only I'll describe/show the serializer of one object, but if you need some info I'll get you as soon as possible.
Models
class Place(models.Model):
coordinates = models.ListField(blank=True, null=True, default=[0.0, 0.0, 0.0])
type = models.CharField(max_length=10, default="Point")
objects = models.DjongoManager()
class Profile(models.Model):
name = models.CharField(max_length=200)
description = models.TextField(default="Without Description")
params = models.TextField(default="No params")
config = models.CharField(max_length=200)
user = models.EmbeddedModelField(
model_container=User
)
place = models.EmbeddedModelField(
model_container=Place
)
devices = models.ArrayModelField(
model_container=Device
)
created_at = models.DateTimeField(auto_now_add=True)
objects = models.DjongoManager()Serializers
class PlaceSerializer(serializers.ModelSerializer):
coordinates = serializers.ListSerializer(
child=serializers.FloatField(),
)
class Meta:
model = Place
fields = ('id', 'coordinates', 'type')
class ProfileSerializer(serializers.ModelSerializer):
user = UserSerializer( )
place = PlaceSerializer()
devices = DeviceSerializer( many=True)
class Meta:
model = Profile
fields = ('id', 'name', 'description', 'params', 'config',
'user', 'place', 'devices', 'created_at')
depth=8
def create(self, validated_data):
# get principal fields
user_data = validated_data.pop('user')
**place_data = validated_data.pop('place')**
devices_data = validated_data.pop('devices')
# get nested fields
# devices nested fields
devices = []
for device in devices_data:
places = []
places_data = device.pop('places')
for place in places_data:
places.append( **Place(coordinates=place['coordinates'], type=place['type'])** )
device['places'] = places
devices.append( Device.objects.create(**device) )
validated_data['devices'] = devices
# user nested fields
institute_data = user_data.pop('institute')
place = institute_data.pop('place')
institute_data['place'] = Place(coordinates=place['coordinates'], type=place['type'])
user_data['institute'] = Institute.objects.create(**institute_data)
validated_data['user'] = User.objects.create(**user_data)
profile = Profile.objects.create(**validated_data)
return profileI've defined PlaceSerializer on many ways but all of them gets the same result, Below describe this ways
CASE 1
class PlaceSerializer(serializers.ModelSerializer):
coordinates = serializers.ListSerializer(
child=serializers.FloatField(),
)CASE 2
class CoordinatesSerializer(serializers.ListSerializer):
child=serializers.FloatField()
class PlaceSerializer(serializers.ModelSerializer):
coordinates = CoordinatesSerializer()CASE 3
class PlaceSerializer(serializers.ModelSerializer):
coordinates = serializers.ListField(
child=serializers.FloatField()
)CASE 4
class PlaceSerializer(serializers.ModelSerializer):
coordinates = serializers.ListField()CASE 5
class PlaceSerializer(serializers.ModelSerializer):
coordinates = serializers.ListSerializer()
#gives error for child is not presentI had changed the types, CharField, IntegerField, FloatField, etc with same results.
Another tests that I've done are append to serializer the methods create, update, to_representation, to_internal_value, all of this for to manage in a better way the info that will saved o retrieved but any works. Another curiosity, if I add a simple Listfield like [10,90,1], is saved and retrieved without problem in contrast when this ListField is inside Place Objects
Please if you know how to solve this I'll glad to you.
One line description of the issue
i send coordinates as list of two float numbers but Django rest frame word reports this :
Python script
my model is :
Traceback
my JSON data is :