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Add documentation link for single 'field-level validation' to the Validator docs page (#3772) (#4657)

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Aaron Lelevier 2016-11-07 12:30:46 +01:00 committed by Tom Christie
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docs/api-guide/validators.md
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@ -272,6 +272,12 @@ A validator may be any callable that raises a `serializers.ValidationError` on f
if value % 2 != 0: if value % 2 != 0:
raise serializers.ValidationError('This field must be an even number.') raise serializers.ValidationError('This field must be an even number.')
#### Field-level validation
You can specify custom field-level validation by adding `.validate_<field_name>` methods
to your `Serializer` subclass. This is documented in the
[Serializer docs](http://www.django-rest-framework.org/api-guide/serializers/#field-level-validation)
## Class-based ## Class-based
To write a class-based validator, use the `__call__` method. Class-based validators are useful as they allow you to parameterize and reuse behavior. To write a class-based validator, use the `__call__` method. Class-based validators are useful as they allow you to parameterize and reuse behavior.