---
url: "https://vueda.dev/v3/reference/api/py/vueda.history.serializers.actions/HistoryEventSerializer.md"
title: "HistoryEventSerializer"
---

# HistoryEventSerializer

## Overview

One write to one row, named by the tracked model rather than the event model.

``relation`` says how the written row belongs to the requested object's history:

- ``self``: the row is the requested object.
- ``related``: the row has a foreign key to the requested object.
- ``state``: the row records the requested object's workflow state. ``model`` and ``object_id``
  name that record, which a client has no reason to show.

## `changes` {#changes}

## `id` {#id}

## `model` {#model}

## `object_id` {#object_id}

## `recorded_at` {#recorded_at}

## `relation` {#relation}

## `type` {#type}

## Source

`server/vueda/history/serializers/actions.py:37`