Index: django/db/models/fields/__init__.py
===================================================================
--- django/db/models/fields/__init__.py	(revision 4563)
+++ django/db/models/fields/__init__.py	(working copy)
@@ -762,18 +762,15 @@
     def get_manipulator_field_objs(self):
         return [oldforms.PositiveSmallIntegerField]
 
-class SlugField(Field):
+class SlugField(CharField):
     def __init__(self, *args, **kwargs):
         kwargs['maxlength'] = kwargs.get('maxlength', 50)
         kwargs.setdefault('validator_list', []).append(validators.isSlug)
         # Set db_index=True unless it's been set manually.
         if not kwargs.has_key('db_index'):
             kwargs['db_index'] = True
-        Field.__init__(self, *args, **kwargs)
+        CharField.__init__(self, *args, **kwargs)
 
-    def get_manipulator_field_objs(self):
-        return [oldforms.TextField]
-
 class SmallIntegerField(IntegerField):
     def get_manipulator_field_objs(self):
         return [oldforms.SmallIntegerField]
Index: tests/modeltests/model_forms/models.py
===================================================================
--- tests/modeltests/model_forms/models.py	(revision 4563)
+++ tests/modeltests/model_forms/models.py	(working copy)
@@ -25,6 +25,7 @@
 from django.db import models
 
 class Category(models.Model):
+    slug = models.SlugField(maxlength=20)
     name = models.CharField(maxlength=20)
     url = models.CharField('The URL', maxlength=40)
 
@@ -38,6 +39,7 @@
         return self.name
 
 class Article(models.Model):
+    slug = models.SlugField()
     headline = models.CharField(maxlength=50)
     pub_date = models.DateField()
     created = models.DateField(editable=False)
@@ -71,9 +73,11 @@
 >>> CategoryForm = form_for_model(Category)
 >>> f = CategoryForm()
 >>> print f
+<tr><th><label for="id_slug">Slug:</label></th><td><input id="id_slug" type="text" name="slug" maxlength="20" /></td></tr>
 <tr><th><label for="id_name">Name:</label></th><td><input id="id_name" type="text" name="name" maxlength="20" /></td></tr>
 <tr><th><label for="id_url">The URL:</label></th><td><input id="id_url" type="text" name="url" maxlength="40" /></td></tr>
 >>> print f.as_ul()
+<li><label for="id_slug">Slug:</label> <input id="id_slug" type="text" name="slug" maxlength="20" /></li>
 <li><label for="id_name">Name:</label> <input id="id_name" type="text" name="name" maxlength="20" /></li>
 <li><label for="id_url">The URL:</label> <input id="id_url" type="text" name="url" maxlength="40" /></li>
 >>> print f['name']
@@ -81,25 +85,26 @@
 
 >>> f = CategoryForm(auto_id=False)
 >>> print f.as_ul()
+<li>Slug: <input type="text" name="slug" maxlength="20" /></li>
 <li>Name: <input type="text" name="name" maxlength="20" /></li>
 <li>The URL: <input type="text" name="url" maxlength="40" /></li>
 
->>> f = CategoryForm({'name': 'Entertainment', 'url': 'entertainment'})
+>>> f = CategoryForm({'slug': 'entertainment', 'name': 'Entertainment', 'url': 'entertainment'})
 >>> f.is_valid()
 True
 >>> f.clean_data
-{'url': u'entertainment', 'name': u'Entertainment'}
+{'url': u'entertainment', 'slug': u'entertainment', 'name': u'Entertainment'}
 >>> obj = f.save()
 >>> obj
 <Category: Entertainment>
 >>> Category.objects.all()
 [<Category: Entertainment>]
 
->>> f = CategoryForm({'name': "It's a test", 'url': 'test'})
+>>> f = CategoryForm({'slug': 'its-test', 'name': "It's a test", 'url': 'test'})
 >>> f.is_valid()
 True
 >>> f.clean_data
-{'url': u'test', 'name': u"It's a test"}
+{'url': u'test', 'slug': u'its-test', 'name': u"It's a test"}
 >>> obj = f.save()
 >>> obj
 <Category: It's a test>
@@ -109,11 +114,11 @@
 If you call save() with commit=False, then it will return an object that
 hasn't yet been saved to the database. In this case, it's up to you to call
 save() on the resulting model instance.
->>> f = CategoryForm({'name': 'Third test', 'url': 'third'})
+>>> f = CategoryForm({'slug': 'third-test', 'name': 'Third test', 'url': 'third'})
 >>> f.is_valid()
 True
 >>> f.clean_data
-{'url': u'third', 'name': u'Third test'}
+{'url': u'third', 'slug': u'third-test', 'name': u'Third test'}
 >>> obj = f.save(commit=False)
 >>> obj
 <Category: Third test>
@@ -124,9 +129,9 @@
 [<Category: Entertainment>, <Category: It's a test>, <Category: Third test>]
 
 If you call save() with invalid data, you'll get a ValueError.
->>> f = CategoryForm({'name': '', 'url': 'foo'})
+>>> f = CategoryForm({'slug': '', 'name': '', 'url': 'foo'})
 >>> f.errors
-{'name': [u'This field is required.']}
+{'slug': [u'This field is required.'], 'name': [u'This field is required.']}
 >>> f.clean_data
 Traceback (most recent call last):
 ...
@@ -135,7 +140,7 @@
 Traceback (most recent call last):
 ...
 ValueError: The Category could not be created because the data didn't validate.
->>> f = CategoryForm({'name': '', 'url': 'foo'})
+>>> f = CategoryForm({'slug': '', 'name': '', 'url': 'foo'})
 >>> f.save()
 Traceback (most recent call last):
 ...
@@ -152,6 +157,7 @@
 >>> ArticleForm = form_for_model(Article)
 >>> f = ArticleForm(auto_id=False)
 >>> print f
+<tr><th>Slug:</th><td><input type="text" name="slug" maxlength="50" /></td></tr>
 <tr><th>Headline:</th><td><input type="text" name="headline" maxlength="50" /></td></tr>
 <tr><th>Pub date:</th><td><input type="text" name="pub_date" /></td></tr>
 <tr><th>Writer:</th><td><select name="writer">
@@ -185,13 +191,14 @@
 >>> print f
 <tr><th>Name:</th><td><input type="text" name="name" value="Mike Royko" maxlength="50" /><br />Use both first and last names.</td></tr>
 
->>> art = Article(headline='Test article', pub_date=datetime.date(1988, 1, 4), writer=w, article='Hello.')
+>>> art = Article(slug='test-article', headline='Test article', pub_date=datetime.date(1988, 1, 4), writer=w, article='Hello.')
 >>> art.save()
 >>> art.id
 1
 >>> TestArticleForm = form_for_instance(art)
 >>> f = TestArticleForm(auto_id=False)
 >>> print f.as_ul()
+<li>Slug: <input type="text" name="slug" value="test-article" maxlength="50" /></li>
 <li>Headline: <input type="text" name="headline" value="Test article" maxlength="50" /></li>
 <li>Pub date: <input type="text" name="pub_date" value="1988-01-04" /></li>
 <li>Writer: <select name="writer">
@@ -205,7 +212,7 @@
 <option value="2">It&#39;s a test</option>
 <option value="3">Third test</option>
 </select>  Hold down "Control", or "Command" on a Mac, to select more than one.</li>
->>> f = TestArticleForm({'headline': u'New headline', 'pub_date': u'1988-01-04', 'writer': u'1', 'article': 'Hello.'})
+>>> f = TestArticleForm({'slug': 'new-headline', 'headline': u'New headline', 'pub_date': u'1988-01-04', 'writer': u'1', 'article': 'Hello.'})
 >>> f.is_valid()
 True
 >>> new_art = f.save()
@@ -224,6 +231,7 @@
 >>> TestArticleForm = form_for_instance(new_art)
 >>> f = TestArticleForm(auto_id=False)
 >>> print f.as_ul()
+<li>Slug: <input type="text" name="slug" value="new-headline" maxlength="50" /></li>
 <li>Headline: <input type="text" name="headline" value="New headline" maxlength="50" /></li>
 <li>Pub date: <input type="text" name="pub_date" value="1988-01-04" /></li>
 <li>Writer: <select name="writer">
@@ -238,7 +246,7 @@
 <option value="3">Third test</option>
 </select>  Hold down "Control", or "Command" on a Mac, to select more than one.</li>
 
->>> f = TestArticleForm({'headline': u'New headline', 'pub_date': u'1988-01-04',
+>>> f = TestArticleForm({'slug': u'new-headline', 'headline': u'New headline', 'pub_date': u'1988-01-04',
 ...     'writer': u'1', 'article': u'Hello.', 'categories': [u'1', u'2']})
 >>> new_art = f.save()
 >>> new_art.id
@@ -248,7 +256,7 @@
 [<Category: Entertainment>, <Category: It's a test>]
 
 Now, submit form data with no categories. This deletes the existing categories.
->>> f = TestArticleForm({'headline': u'New headline', 'pub_date': u'1988-01-04',
+>>> f = TestArticleForm({'slug': u'new-headline', 'headline': u'New headline', 'pub_date': u'1988-01-04',
 ...     'writer': u'1', 'article': u'Hello.'})
 >>> new_art = f.save()
 >>> new_art.id
@@ -259,7 +267,7 @@
 
 Create a new article, with categories, via the form.
 >>> ArticleForm = form_for_model(Article)
->>> f = ArticleForm({'headline': u'The walrus was Paul', 'pub_date': u'1967-11-01',
+>>> f = ArticleForm({'slug': u'new-headline', 'headline': u'The walrus was Paul', 'pub_date': u'1967-11-01',
 ...     'writer': u'1', 'article': u'Test.', 'categories': [u'1', u'2']})
 >>> new_art = f.save()
 >>> new_art.id
@@ -270,7 +278,7 @@
 
 Create a new article, with no categories, via the form.
 >>> ArticleForm = form_for_model(Article)
->>> f = ArticleForm({'headline': u'The walrus was Paul', 'pub_date': u'1967-11-01',
+>>> f = ArticleForm({'slug': u'walrus-was-paul', 'headline': u'The walrus was Paul', 'pub_date': u'1967-11-01',
 ...     'writer': u'1', 'article': u'Test.'})
 >>> new_art = f.save()
 >>> new_art.id
@@ -283,6 +291,7 @@
 the Category model, we can use save_instance() to apply its changes to an
 existing Category instance.
 >>> class ShortCategory(Form):
+...     slug = CharField(max_length=5)
 ...     name = CharField(max_length=5)
 ...     url = CharField(max_length=3)
 >>> cat = Category.objects.get(name='Third test')
@@ -290,7 +299,7 @@
 <Category: Third test>
 >>> cat.id
 3
->>> sc = ShortCategory({'name': 'Third', 'url': '3rd'})
+>>> sc = ShortCategory({'slug': 'third', 'name': 'Third', 'url': '3rd'})
 >>> save_instance(sc, cat)
 <Category: Third>
 >>> Category.objects.get(id=3)
@@ -302,6 +311,7 @@
 >>> ArticleForm = form_for_model(Article)
 >>> f = ArticleForm(auto_id=False)
 >>> print f.as_ul()
+<li>Slug: <input type="text" name="slug" maxlength="50" /></li>
 <li>Headline: <input type="text" name="headline" maxlength="50" /></li>
 <li>Pub date: <input type="text" name="pub_date" /></li>
 <li>Writer: <select name="writer">
@@ -320,6 +330,7 @@
 >>> Writer.objects.create(name='Carl Bernstein')
 <Writer: Carl Bernstein>
 >>> print f.as_ul()
+<li>Slug: <input type="text" name="slug" maxlength="50" /></li>
 <li>Headline: <input type="text" name="headline" maxlength="50" /></li>
 <li>Pub date: <input type="text" name="pub_date" /></li>
 <li>Writer: <select name="writer">
