Bigint coerce to string

[HoodyH]

Fixing Bigint coerce to string missing

Creates a new type BigIntegerField to map django.models.BigIntegerField and solve the problem

Fix #9733

[auvipy]

looks good

[HoodyH]

Any news?

[Copilot]

Pull Request Overview

This PR adds a new BigIntegerField serializer field to properly handle Django's BigIntegerField and BigAutoField model fields, addressing issue #9733. Previously, these fields were incorrectly mapped to the standard IntegerField serializer.

Key Changes:

• Introduces BigIntegerField class that extends IntegerField with optional string coercion for large integers
• Adds COERCE_BIGINT_TO_STRING setting (default: False) to control output format
• Updates model field mappings to use BigIntegerField for BigIntegerField and BigAutoField

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
rest_framework/fields.py	Implements new BigIntegerField class with coerce_to_string parameter and custom error messages
rest_framework/serializers.py	Imports BigIntegerField and updates serializer_field_mapping to map Django's BigIntegerField and BigAutoField to the new field type
rest_framework/settings.py	Adds COERCE_BIGINT_TO_STRING configuration setting with default value of False
docs/api-guide/fields.md	Documents the new BigIntegerField with its signature and parameters
docs/api-guide/settings.md	Documents the COERCE_BIGINT_TO_STRING setting and its behavior
tests/test_fields.py	Adds comprehensive test cases for BigIntegerField including validation, min/max constraints, and string coercion
tests/test_model_serializer.py	Updates expected serializer representation test to expect BigIntegerField instead of IntegerField

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