Pickup custom message for EmailField

Set via `error_messages`, since `validate_email` is already present on field.

rest_framework/utils/field_mapping.py

@@ -164,6 +164,9 @@ def get_field_kwargs(field_name, model_field):
         # EmailField does not need to include the validate_email argument,
         # as it is explicitly added in.
         if isinstance(model_field, models.EmailField):
+            custom_message = model_field.error_messages.get("invalid", None)
+            if custom_message is not None:
+                kwargs.setdefault('error_messages', {}).update(invalid=custom_message)
             validator_kwarg = [
                 validator for validator in validator_kwarg
                 if validator is not validators.validate_email

tests/test_validators.py

@@ -2,7 +2,7 @@ import datetime
 
 import pytest
 from django.core.validators import (
-    EmailValidator, MaxLengthValidator, MaxValueValidator, MinLengthValidator,
+    MaxLengthValidator, MaxValueValidator, MinLengthValidator,
     MinValueValidator, URLValidator
 )
 from django.db import DataError, models
@@ -612,7 +612,9 @@ class ValidatorMessageTests(TestCase):
 
     def test_email_validator_message_is_copied_from_model(self):
         class UserModel(models.Model):
-            email = models.EmailField(validators=[EmailValidator(message='Please enter a valid email.')])
+            email = models.EmailField(
+                error_messages={"invalid": "Please enter a valid email."}
+            )
 
         class UserSerializer(serializers.ModelSerializer):
             class Meta: