Changed default widget for TextField with choices to select box.

rest_framework/utils/field_mapping.py

@@ -91,7 +91,8 @@ def get_field_kwargs(field_name, model_field):
     if isinstance(model_field, models.SlugField):
         kwargs['allow_unicode'] = model_field.allow_unicode
 
-    if isinstance(model_field, models.TextField) or (postgres_fields and isinstance(model_field, postgres_fields.JSONField)):
+    if isinstance(model_field, models.TextField) and not model_field.choices or \
+            (postgres_fields and isinstance(model_field, postgres_fields.JSONField)):
         kwargs['style'] = {'base_template': 'textarea.html'}
 
     if isinstance(model_field, models.AutoField) or not model_field.editable:

tests/test_utils.py

@@ -1,6 +1,7 @@
 from unittest import mock
 
 from django.conf.urls import url
+from django.db import models
 from django.test import TestCase, override_settings
 
 from rest_framework.decorators import action
@@ -8,6 +9,7 @@ from rest_framework.routers import SimpleRouter
 from rest_framework.serializers import ModelSerializer
 from rest_framework.utils import json
 from rest_framework.utils.breadcrumbs import get_breadcrumbs
+from rest_framework.utils.field_mapping import get_field_kwargs
 from rest_framework.utils.formatting import lazy_format
 from rest_framework.utils.urls import remove_query_param, replace_query_param
 from rest_framework.views import APIView
@@ -267,3 +269,18 @@ class LazyFormatTests(TestCase):
         assert message.format.call_count == 1
         str(formatted)
         assert message.format.call_count == 1
+
+
+class GetFieldKwargsTest(TestCase):
+    def test_get_text_field_kwargs(self):
+        # TextField without choices
+        f = models.TextField()
+        kwargs = get_field_kwargs('f', f)
+        assert 'style' in kwargs
+        assert 'choices' not in kwargs
+
+        # TextField with choices
+        f = models.TextField(choices=['ONE', 'TWO'])
+        kwargs = get_field_kwargs('f', f)
+        assert 'style' not in kwargs
+        assert 'choices' in kwargs