[Solved] Given this serializer code, what will happen if age is less than 18? class UserSerializer(serializers.Serializer):... Given this serializer code, what will happen if age is less than 18? | Django

Django - DRF Advanced Features

Given this serializer code, what will happen if age is less than 18?

class UserSerializer(serializers.Serializer):
    age = serializers.IntegerField()

    def validate_age(self, value):
        if value < 18:
            raise serializers.ValidationError('Must be at least 18')
        return value

AValidationError with message 'Must be at least 18' is raised

BThe age is automatically set to 18

CNo error, age is accepted as is

DSerializer ignores the age field

Step-by-Step Solution

Solution:

Step 1: Understand the validate_age method logic
The method checks if age is less than 18 and raises ValidationError if true.
Step 2: Predict behavior when age < 18
If age is less than 18, the error is raised stopping validation and returning the message.
Final Answer:
ValidationError with message 'Must be at least 18' is raised -> Option A
Quick Check:
Age < 18 triggers ValidationError [OK]

Quick Trick: ValidationError raised when condition inside validate_ fails [OK]

Common Mistakes:

MISTAKES

Assuming age is changed automatically
Thinking no error occurs for invalid age
Believing the field is ignored silently

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Given this serializer code, what will happen if age is less than 18?

Step 1: Understand the validate_age method logic

Step 2: Predict behavior when age < 18

Final Answer:

Quick Check:

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