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This documentation covers Review Board 3.0. You can see the latest Review Board documentation or all other versions.


reviewboard.extensions.hooks.ReviewRequestFieldSetsHook allows extensions to create grouped sets of fields on the review request page. These are equivalent to the Information and Reviewers sections.

See Adding Review Request Fields for a thorough guide on adding new fields.

A caller must subclass reviewboard.reviews.fields.BaseReviewRequestFieldSet and fill in the required fields, fieldset_id and label. It may also include a hard-coded list of default field classes in the field_classes attribute.

A custom fieldset class can be added by instantiating the hook, passing in a list of fieldset classes.

Fieldset IDs must be unique. It is best to choose a fieldset ID that contains some sort of extension-specific information, such as the vendor or the extension ID. Fieldset IDs are used when registering new fields (using ReviewRequestFieldsHook) in order to specify where the field should appear.


from reviewboard.extensions.base import Extension
from reviewboard.extensions.hooks import ReviewRequestFieldSetsHook
from reviewboard.reviews.fields import (BaseEditableField,

class MilestoneField(BaseEditableField):
    field_id = 'myvendor_milestone'
    label = 'Milestone'

class SampleFieldSet(BaseReviewRequestFieldSet):
    fieldset_id = 'myvendor_my_fields'
    label = 'My Fields'
    field_classes = [MilestoneField]

class SampleExtension(Extension):
    def initialize(self):
        ReviewRequestFieldSetsHook(self, [SampleFieldSet])