I am trying to save parent (VisVisits) and children (VisVistiData) table with same api call. Data is coming into json format. I am able to save both the table except one column visit_id in the children (VisVisitData) table. visit_id does not come from the json. It is auto number type field in parent table(VisVisits) and I want to take visit_id from parent(after gets insert) table and save it to their children ids with other column in children table (VisVisitData)
I really need help to fix this issue.
Serializer
class VisVisitsSerializer(serializers.ModelSerializer):
data = VisVisitDataSerializer(many=True)
class Meta:
model = VisVisits
fields = ('visit_id','user','data')
read_only_fields = ['visit_id']
def create(self, validated_data):
visits_data = validated_data.pop('data')
visit = VisVisits.objects.create(**validated_data)
for visit_data in visits_data:
VisVisitData.objects.create(visit_id=visit.visit_id, **visit_data)
return visit
class VisVisitDataSerializer(serializers.ModelSerializer):
class Meta:
model = VisVisitData
fields = ('__all__')
model
class VisVisits(models.Model):
visit_id = models.IntegerField(primary_key=True,auto_created=True)
user = models.ForeignKey(UsrUsers, models.DO_NOTHING, blank=False, null=False)
def __str__(self):
return str(self.visit_id)
class VisVisitData(models.Model):
vdata_id = models.IntegerField(primary_key=True,auto_created=True)
visit = models.ForeignKey('VisVisits', models.DO_NOTHING, blank=True, null=True, related_name='data')
def __str__(self):
return str(self.vdata_id)
json
{
"user": "1",
"visits": [
{
"action": "i",
"local_id": "170",
"data": [
{
"Active": "1",
"LocalID": "1905",
"VisitDataID": "",
},
{
"Active": "1",
"LocalID": "1906",
"VisitDataID": "",
},
{
"Active": "1",
"LocalID": "1907",
"VisitDataID": "",
},
{
"Active": "1",
"LocalID": "1908",
"VisitDataID": "",
},
{
"Active": "1",
"LocalID": "1909",
"VisitDataID": "",
}
]
}
Related
I'll give coffee to the person who found the solution Help me please. Query object:The result I want is just to update the value of auth_token
My model:
class Student(models.Model):
name = models.CharField(max_length=100, null=True, blank=True)
age = models.IntegerField(null=True, blank=True)
configuration=models.JSONField(null=True)
def __str__(self):
return self.name
Query object:The result I want is just to update the value of auth_token
class Bank:
def example(self):
query = Student.objects.get(id=1)
el =query.configuration
encoded_hand = json.dumps(el)
jsonObject = json.loads(encoded_hand)
for value in jsonObject:
checkValue=value['name']
if checkValue == 'Auth_token':
backUrl= value['value']
backUrl = "token"
query.configuration = backUrl # This is not working properly. Bad idea
query.save()
print("Ene bol:{}".format(backUrl))
MyJson :
[
{
"name": "Auth_token",
"value": "sfsdf"
},
{
"name": "Refresh_token",
"value": "sdfsdfs" # How to update this value token ?
},
{
"name": "BaseUrl",
"value": "test"
}
]
I want to create a graphene.Union type of multiple existing types. I am able to resolve it but it is not in my required format.
Schema
from graphene_django import DjangoObjectType
class ageType(DjangoObjectType):
class Meta:
model = age
class ethnicityType(DjangoObjectType):
class Meta:
model = ethnicity
class combinedType(graphene.Union):
class Meta:
types = (ageType, ethnicityType)
class Query(graphene.ObjectType):
defaultPicker = graphene.List(combinedType)
def resolve_defaultPicker(self, info):
items = []
age_q = age.objects.all()
items.extend(age_q)
ethnicity_q = ethnicity.objects.all()
items.extend(ethnicity_q)
return items
The query I am using in the graphql admin:
{
defaultPicker{
... on ageType{
id
age
}
... on ethnicityType{
id
ethnicity
}
}
}
I want to get a output like this:
{
"data": {
"defaultPicker": [
'ageType': [{
"id": "2",
"ethnicity": "American",
"ethnicityFr": "Test"
}],
'ethnicityType': [{
"id": "1",
"familyPlans": "3 kids",
"familyPlansFr": "3 enfants"
}],
]
}
}
I tried many things but couldn't find a way to resolve it.
I have a basic API setup to do a basic Post and Get from a single table. I want to create a nested array though grouping by force_element_type
model.py
from db import db
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy import text as sa_text
class ForceElementModel(db.Model):
__tablename__ = 'force_element'
__table_args__ = {'schema': 'force_element'}
force_element_id = db.Column(UUID(as_uuid=True), primary_key=True, server_default=sa_text("uuid_generate_v4()"))
name = db.Column(db.String(100), nullable=False)
force_element_type = db.Column(db.String(20), nullable=False)
def __init__(self, name, force_element_type):
self.name = name
self.force_element_type = force_element_type
def json(self):
return {'name': self.name, 'force_element_type': self.force_element_type}
#classmethod
def find_by_name(cls, name):
return cls.query.filter_by(name=name).first() # simple TOP 1 select
def save_to_db(self): # Upserting data
db.session.add(self)
db.session.commit() # Balla
def delete_from_db(self):
db.session.delete(self)
db.session.commit()
resource.py
from flask_restful import Resource, reqparse
#from flask_jwt import jwt_required
from models.force_element import ForceElementModel
class ForceElement(Resource):
parser = reqparse.RequestParser() # only allow price changes, no name changes allowed
parser.add_argument('force_element_type', type=str, required=True, help='This field cannot be left blank')
##jwt_required()
def post(self, name):
if ForceElementModel.find_by_name(name):
return {'message': "An Force Element with name '{}' already exists.".format(name)}, 400
data = ForceElement.parser.parse_args()
force_element = ForceElementModel(name, data['force_element_type'])
try:
force_element.save_to_db()
except:
return {"message": "An error occurred inserting the item."}, 500
return force_element.json(), 201
class ForceElementList(Resource):
##jwt_required()
def get(self):
return {'force_elements': [force_element.json() for force_element in ForceElementModel.query.all()]}
class ForceElementType(Resource):
##jwt_required()
def get(self):
The GET endpoint using ForceElementList returns
{
"force_elements": [
{
"name": "San Antonio",
"force_element_type": "ship"
},
{
"name": "Nimitz",
"force_element_type": "ship"
},
{
"name": "Nimitz- Starboard",
"force_element_type": "Crew"
},
{
"name": "Nimitz- Port",
"force_element_type": "Crew"
}
]
}
I don't know how to group by force_element_type and return
[
"ship": [
{
"name": "San Antonio",
"force_element_id": "xxx1"
},
{
"name": "Nimitz",
"force_element_id": "xxx2"
}],
"crew": [
{
"name": "Nimitz- Starboard",
"force_element_id": "yyy1"
},
{
"name": "Nimitz- Port",
"force_element_id": "yyy2"
}
]
]
How do I create this separate andpoint?
OK I got there, here is how I did it. Is there a better way?
Lesson one use an online parser to check the json format this is what I was actually aiming for and the square braket at then start had me scratching my head for a while
{
"ship": [
{
"name": "San Antonio",
"force_element_id": "xxx1"
},
{
"name": "Nimitz",
"force_element_id": "xxx2"
}],
"crew": [
{
"name": "Nimitz- Starboard",
"force_element_id": "yyy1"
},
{
"name": "Nimitz- Port",
"force_element_id": "yyy2"
}]
}
This code creates the correct format for the output
class ForceElementType(Resource):
##jwt_required()
def get(self):
types = {}
force_elements = ForceElementModel.query.order_by(ForceElementModel.force_element_type.desc()).all()
for force_element in force_elements:
nested = {'name': force_element.name, 'force_element_id': str(force_element.force_element_id)}
print(nested)
if not force_element.force_element_type in types:
types[force_element.force_element_type] = []
types[force_element.force_element_type].append(nested)
response = types
I have two Database Models like this
class Setting(db.Model):
id = db.Column(db.Integer, id=True)
container_id = ST_db.Column(ST_db.Integer, db.ForeignKey('settings_container.id'))
setting_name = ST_db.Column(ST_db.String(50))
setting_value = ST_db.Column(ST_db.String(50))
class SettingsContainer(db.Model):
id = db.Column(db.Integer, id=True)
settings = db.relationship('Settings', backref='container', cascade='all, delete')
When I serialize the model SettingsContainer using the following schemas
class Setting(ma.Schema):
class Meta:
fields = (
'setting_name',
'setting_value',
)
class SettingsContainer(ma.Schema):
settings = ST_ma.Nested(Setting, many=True)
class Meta:
fields = (
'id',
'settings'
)
What I get is
[
{
"id": 1
"settings": [
{
"setting_name": 'name1',
"setting_value": 'value1'
},
{
"setting_name": 'name2',
"setting_value": 'value2'
},
}
"id": 2
"settings": [
{
"setting_name": 'name3',
"setting_value": 'value3'
},
{
"setting_name": 'name4',
"setting_value": 'value4'
},
]
But I want to get data in the format of
[
{
"id": 1
"settings": [['name1', 'value1'], ['name2', 'value2']]
}
{
"id": 2
"settings": [['name3', 'value3'], ['name4', 'value4']]
}
]
I want to able to extract the Nested fields, I don't understand how to do it using the ma.Function method, thanks a lot to everyone in advance.
Okay so I found out the answer, what I have to do is to use ma.Function with ma.Pluck
The appropriate serializers are.
class Setting(ma.Schema):
complete_setting = ma.Function(lambda setting:(
setting.setting_name,
setting.setting_value,
))
class SettingsContainer(ma.Schema):
settings = ma.List(ma.Pluck(Setting, 'complete_setting'))
class Meta:
fields = (
'id',
'settings'
)
DRF Serializer contains a group and inventory field which are many2many and foreign key. It is missing in default DRF HTML Form but available in GET view. currently, the depth field is enabled in Serializer. If i am removing depth then Foreign key is available in default HTML form, but still group many2many field is missing. I need both the fields for POST call or in DRF HTML Form.
Do i have to write some create method, but I do not want to create new record for Foreign key and many2many just want to utilize the existing field.
My Serializer class.
class MainHostSerializer(serializers.ModelSerializer):
class Meta:
model = MainHost
fields = (
'host_id',
'host_name',
'inventory',
'group'
)
# depth = 2
Raw view for default DRF HTML Form
{
"host_id": null,
"host_name": ""
}
Model Class
class MainHost(models.Model):
host_id = models.IntegerField(verbose_name='HOST ID', primary_key=True)
host_name = models.CharField(verbose_name='HOST NAME', max_length=512)
inventory = models.ForeignKey(related_name='inv_ins', on_delete=models.SET_NULL, to='hosts.MainInventory', blank=True, null=True)
group = models.ManyToManyField(MainGroup, related_name='hostgroups', through ='HostGroup')
Create Method for MainHost Serializer
def create(self, validated_data):
inv_data = validated_data.pop('inventory')
inv_res = MainInventory.objects.create(**inv_data)
group_data = validated_data.pop('group')
host_data = MainHost.objects.create(inventory = inv_res, **validated_data)
for g_data in group_data:
inv_data = g_data.pop('inv_id')
inv = MainInventory.objects.create(**inv_data)
group_res = MainGroup.objects.create(inv_id = inv, **g_data)
print(validated_data)
HostGroup.objects.create(host = host_data, group = group_res)
This was sample JSON
{
"count": 1692,
"next": "http://127.0.0.1:8000/api/mainhost/?page=2",
"previous": null,
"results": [
{
"host_id": 4087,
"host_name": "10.240.144.2",
"inventory": {
"inv_id": 91,
"inv_name": "GNS Switches (TestNet)",
"total_hosts": 539,
"total_groups": 1,
"org_name": "ABC_TestNet",
"description": "Inventory of ABC switches on Testnet",
"inv_variables": "environ: testnet"
},
"group": [
{
"group_id": 280,
"group_name": "aruba",
"total_hosts": 539,
"total_groups": 0,
"inv_id": {
"inv_id": 91,
"inv_name": "ABC Switches (TestNet)",
"total_hosts": 539,
"total_groups": 1,
"org_name": "ABC_TestNet",
"description": "Inventory of ABC switches on Testnet",
"inv_variables": "environ: testnet"
},
"description": "imported",
"group_variables": "{}",
"groupinv_name": "ABC Switches (TestNet)",
"groupinv_description": "",
"groupinv_source": "scm",
"groupinv_path": "TEC/GNS/Switches/testnet.ini"
}
],
"description": "imported",
"foreman_group": "[{'id': 280, 'name': 'aruba'}]",
"host_variables": "{}",
"ansible_facts": "{}"
}
]
}