diff --git a/docs/api-guide/fields.md b/docs/api-guide/fields.md
index df54ea021..dc9ab0452 100644
--- a/docs/api-guide/fields.md
+++ b/docs/api-guide/fields.md
@@ -73,18 +73,35 @@ These fields represent basic datatypes, and support both reading and writing val
 
 ## BooleanField
 
+A Boolean representation, corresponds to `django.db.models.fields.BooleanField`.
+
 ## CharField
 
+A text representation, optionally validates the text to be shorter than `max_length` and longer than `min_length`, corresponds to `django.db.models.fields.CharField`
+or `django.db.models.fields.TextField`.
+
+**Signature:** `CharField([max_length=<Integer>[, min_length=<Integer>]])`
+
 ## EmailField
 
+A text representation, validates the text to be a valid e-mail adress. Corresponds to `django.db.models.fields.EmailField`
+
 ## DateField
 
+A date representation. Corresponds to `django.db.models.fields.DateField`
+
 ## DateTimeField
 
+A date and time representation. Corresponds to `django.db.models.fields.DateTimeField`
+
 ## IntegerField
 
+An integer representation. Corresponds to `django.db.models.fields.IntegerField`, `django.db.models.fields.SmallIntegerField`, `django.db.models.fields.PositiveIntegerField` and `django.db.models.fields.PositiveSmallIntegerField`
+
 ## FloatField
 
+A floating point representation. Corresponds to `django.db.models.fields.FloatField`.
+
 ---
 
 # Relational Fields
diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index bb9a523d6..5d13bd55f 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -409,6 +409,13 @@ class BooleanField(WritableField):
             return False
         raise ValidationError(self.error_messages['invalid'] % value)
 
+class TextField(WritableField):
+    type_name = 'TextField'
+
+    def from_native(self, value):
+        if isinstance(value, basestring) or value is None:
+            return value
+        return smart_unicode(value)
 
 class CharField(WritableField):
     type_name = 'CharField'
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index 063300172..13f8cde21 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -377,10 +377,14 @@ class ModelSerializer(Serializer):
         field_mapping = {
             models.FloatField: FloatField,
             models.IntegerField: IntegerField,
+            models.PositiveIntegerField: IntegerField,
+            models.SmallIntegerField: IntegerField,
+            models.PositiveSmallIntegerField: IntegerField,
             models.DateTimeField: DateTimeField,
             models.DateField: DateField,
             models.EmailField: EmailField,
             models.CharField: CharField,
+            models.TextField: CharField,
             models.CommaSeparatedIntegerField: CharField,
             models.BooleanField: BooleanField,
         }
diff --git a/rest_framework/tests/serializer.py b/rest_framework/tests/serializer.py
index 256987ad0..7208d6a54 100644
--- a/rest_framework/tests/serializer.py
+++ b/rest_framework/tests/serializer.py
@@ -28,6 +28,26 @@ class CommentSerializer(serializers.Serializer):
         return instance
 
 
+class LongText(object):
+    def __init__(self, content):
+        self.content = content
+
+    def __eq__(self, other):
+        return all([getattr(self, attr) == getattr(other, attr)
+                    for attr in ('content',)])
+
+
+class LongTextSerializer(serializers.Serializer):
+    content = serializers.TextField()
+
+    def restore_object(self, data, instance=None):
+        if instance is None:
+            return LongText(**data)
+        for key, val in data.items():
+            setattr(instance, key, val)
+        return instance
+
+
 class BasicTests(TestCase):
     def setUp(self):
         self.comment = Comment(
@@ -82,6 +102,7 @@ class ValidationTests(TestCase):
             'content': 'x' * 1001,
             'created': datetime.datetime(2012, 1, 1)
         }
+        self.long_text = LongText('test test test test')
 
     def test_create(self):
         serializer = CommentSerializer(self.data)
@@ -102,6 +123,14 @@ class ValidationTests(TestCase):
         self.assertEquals(serializer.is_valid(), False)
         self.assertEquals(serializer.errors, {'email': [u'This field is required.']})
 
+    def test_update_long_text(self):
+        data = {
+            'content' : 'Lorem ipsum dolor sit amet.'
+        }
+        serializer = LongTextSerializer(data, self.long_text)
+        self.assertEquals(serializer.is_valid(), True)
+        self.assertEquals(data['content'], self.long_text.content)
+
 
 class MetadataTests(TestCase):
     def test_empty(self):