getting keyError: 'request' i am getting this error when i am to create an evaluation test i am newbie to django rest framework can somebody help me why i am getting this error

[zohaib younis]

def validate(self, data, *args, **kwargs):

questions = self.context['request'].data.get("questions")

if not questions:

raise serializers.ValidationError("questions are required")

if self.context["request"].method == "POST":

self.questions = QuestionSerializer(data=questions, many=True)

self.questions.is_valid(raise_exception=True)

elif self.context["request"].method == "PUT":

self.questions = questions

self.new_questions = self.context["request"].data.get(

"new_questions")

if self.new_questions:

self.new_questions = QuestionSerializer(

data=self.new_questions, many=True)

self.new_questions.is_valid(raise_exception=True)

return data

def create(self, data):

evaluation_test = EvaluationTest()

evaluation_test.category = data['category']

evaluation_test.admin = data['admin']

evaluation_test.title = data['title']

evaluation_test.type = data['type']

evaluation_test.save()

for question in data['questions']:

question.evaluationtest = evaluation_test

question.save()

return evaluation_test

def update(self, instance, validated_data):

instance.title = validated_data.get["title", instance.title]

instance.type = validated_data.get["type", instance.type]

instance.category = validated_data.get["category", instance.category]

instance.admin = validated_data.get["admin", instance.admin]

for question in self.questions:

q = QuestionSerializer(instance=question["id"], data=question)

q.is_valid(raise_exception=True)

q.save()

if self.new_questions:

new_questions = self.new_questions.save()

for question in new_questions:

question.save()

return instance

[Arbaz Hundekar]

while instantiating your serializer do like this ser = Serializer(context={"request": request})

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Warm Regards,

Arbaz

[zohaib younis]

arbaz thanks for your guidance i have resolved that issue now when i try to create a test it is giving me an error 

for question in data["questions"]:

keyError :'questions'

can you help me with that problem thanks 

[Arbaz Hundekar]

try this

questions = self.context['request'].data.get("questions",None)

If questions is not in request.data it will be set to None. It will work with your not condition as well.

[zohaib younis]

from rest_framework import serializers

from .models import EvaluationTest, Question, Choice, GradeEvaluationText, Category

from users.models import User

class StringSerializer(serializers.StringRelatedField):

def to_internal_value(self, value):

return value

class ChoiceSerializer(serializers.ModelSerializer):

class Meta:

model = Choice

fields = '__all__'

class QuestionSerializer(serializers.ModelSerializer):

choices = ChoiceSerializer(many=True)

answer_text = serializers.CharField(

max_length=50, required=True, write_only=True)

class Meta:

model = Question

fields = ('id', 'choices', 'question',

'order', 'answer_text', 'answer')

read_only_fields = ('answer', )

def validate(self, attrs):

attrs = super().validate(attrs)

if not any(map(lambda x: x['title'] == attrs["answer_text"], attrs["choices"])):

raise serializers.ValidationError("Answer must match the choices")

self.answer_text = attrs["answer_text"]

del attrs["answer_text"]

return attrs

def create(self, validated_data):

choices = validated_data.pop("choices")

question = super().create(validated_data)

for choice_data in choices:

choice = Choice.objects.create(title=choice_data["title"])

question.choices.add(choice)

if choice_data["title"] == self.answer_text:

question.answer = choice

question.save()

return question

def update(self, instance, validated_data):

choices = validated_data.pop["choices"]

instance = super().update(instance, validated_data)

choices = ChoiceSerializer(data=choices, many=True)

choices.is_valid(raise_exception=True)

choices = choices.save()

old_ids = list(instance.choices.values_list("id", flat=True))

for choice in choices:

instance.choices.add(choice)

if self.answer_text == choice.title:

instance.answer = choice

Choice.objects.filter(id__in=old_ids).delete()

return instance

class CategorySerializer(serializers.ModelSerializer):

class Meta:

model = Category

fields = '__all__'

class EvaluationTestSerializer(serializers.ModelSerializer):

questions = serializers.SerializerMethodField()

class Meta:

model = EvaluationTest

fields = '__all__'

def get_questions(self, obj):

return QuestionSerializer(obj.questions.all(), many=True).data

# def by_category(category_id):

# tests = EvaluationTest.objects.filter(category_id=category_id)

# items = EvaluationTestSerializer(tests, many=True).data

# return items

def validate(self, data, *args, **kwargs):

questions = self.context["request"].data.get("questions",None)

instance.title = validated_data.get("title", instance.title)

instance.type = validated_data.get("type", instance.type)

instance.category = validated_data.get("category", instance.category)

instance.admin = validated_data.get("admin", instance.admin)

for question in self.questions:

q = QuestionSerializer(instance=question["id"], data=question)

q.is_valid(raise_exception=True)

q.save()

if self.new_questions:

new_questions = self.new_questions.save()

for question in new_questions:

question.save()

return instance

[zohaib younis]

arbaz bro i am still getting the same error

[Gonzalo Amadio]

Key error, means that key 'question' it's not in data.

Put a debugger and inspect what's in data.