Switch from clean_<fieldname> to validate_<fieldname>, clarify documentation

1 files changed, 6 insertions, 4 deletions

diff --git a/docs/api-guide/serializers.md b/docs/api-guide/serializers.md
index e1e12e74..9011d31f 100644
--- a/docs/api-guide/serializers.md
+++ b/docs/api-guide/serializers.md
@@ -80,19 +80,21 @@ When deserializing data, you always need to call `is_valid()` before attempting
 
 ## Custom field validation
 
-Like Django forms, you can specify custom field-level validation by adding `clean_<fieldname>()` methods to your `Serializer` subclass. This method takes a dictionary of deserialized data as a first argument, and the field name in that data as a second argument (which will be either the name of the field or the value of the `source` argument, if one was provided.) It should either return the data dictionary or raise a `ValidationError`. For example:
+You can specify custom field-level validation by adding `validate_<fieldname>()` methods to your `Serializer` subclass. These are analagous to `clean_<fieldname>` methods on Django forms, but accept slightly different arguments. They take a dictionary of deserialized data as a first argument, and the field name in that data as a second argument (which will be either the name of the field or the value of the `source` argument to the field, if one was provided). Your `validate_<fieldname>` methods should either just return the data dictionary or raise a `ValidationError`. For example:
 
-    class BlogPostSerializer(Serializer):
+    from rest_framework import serializers
+
+    class BlogPostSerializer(serializers.Serializer):
         title = serializers.CharField(max_length=100)
         content = serializers.CharField()
 
-        def clean_title(self, data, source):
+        def validate_title(self, data, source):
             """
             Check that the blog post is about Django
             """
             value = data[source]
             if "Django" not in value:
-                raise ValidationError("Blog post is not about Django")
+                raise serializers.ValidationError("Blog post is not about Django")
             return data
 
 ## Dealing with nested objects