---
url: "https://vueda.dev/v3/reference/api/py/vueda.workflow.models/ObjectState.md"
title: "ObjectState"
---

# ObjectState

## Overview

A workflow object is a row in the database that represents an object that has a workflow and a state.

## `DoesNotExist` {#DoesNotExist}

The requested object does not exist

### Source {#DoesNotExist-source}

`server/vueda/workflow/models.py`

## `MultipleObjectsReturned` {#MultipleObjectsReturned}

The query returned multiple objects when only one was expected.

### Source {#MultipleObjectsReturned-source}

`server/vueda/workflow/models.py`

## `NotUpdated` {#NotUpdated}

The updated object no longer exists.

### Source {#NotUpdated-source}

`server/vueda/workflow/models.py`

## `id` {#id}

A wrapper for a deferred-loading field. When the value is read from this
object the first time, the query is executed.

### Signature {#id-signature}

`id(unknown)`

#### Parameters {#id-parameters}

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| <span id="id-param-unknown">unknown</span> |  | yes |  |  |

## `object_id` {#object_id}

A wrapper for a deferred-loading field. When the value is read from this
object the first time, the query is executed.

### Signature {#object_id-signature}

`object_id(unknown)`

#### Parameters {#object_id-parameters}

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| <span id="object_id-param-unknown">unknown</span> |  | yes |  |  |

## `objects` {#objects}

### Signature {#objects-signature}

`objects(unknown)`

#### Parameters {#objects-parameters}

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| <span id="objects-param-unknown">unknown</span> |  | yes |  |  |

## `pgh_event_model` {#pgh_event_model}

A descriptor for accessing the pgh_event_model field on a tracked model

### Signature {#pgh_event_model-signature}

`pgh_event_model(unknown)`

#### Parameters {#pgh_event_model-parameters}

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| <span id="pgh_event_model-param-unknown">unknown</span> |  | yes |  |  |

## `events` {#events}

Accessor to the related objects manager on the reverse side of a
many-to-one relation.

In the example::

    class Child(Model):
        parent = ForeignKey(Parent, related_name='children')

``Parent.children`` is a ``ReverseManyToOneDescriptor`` instance.

Most of the implementation is delegated to a dynamically defined manager
class built by ``create_reverse_many_to_one_manager()`` defined below.

## `formatted_name_lookup_expression` {#formatted_name_lookup_expression}

## `object_state_proxy` {#object_state_proxy}

Accessor to the related objects manager on the one-to-many relation created
by GenericRelation.

In the example::

    class Post(Model):
        comments = GenericRelation(Comment)

``post.comments`` is a ReverseGenericManyToOneDescriptor instance.

## `object_states_proxy` {#object_states_proxy}

Accessor to the related objects manager on the reverse side of a
many-to-one relation.

In the example::

    class Child(Model):
        parent = ForeignKey(Parent, related_name='children')

``Parent.children`` is a ``ReverseManyToOneDescriptor`` instance.

Most of the implementation is delegated to a dynamically defined manager
class built by ``create_reverse_many_to_one_manager()`` defined below.

## `pgh_event_models` {#pgh_event_models}

## `state` {#state}

Accessor to the related object on the forward side of a many-to-one or
one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example::

    class Child(Model):
        parent = ForeignKey(Parent, related_name='children')

``Child.parent`` is a ``ForwardManyToOneDescriptor`` instance.

## `state_id` {#state_id}

## `workflow` {#workflow}

Accessor to the related object on the forward side of a many-to-one or
one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example::

    class Child(Model):
        parent = ForeignKey(Parent, related_name='children')

``Child.parent`` is a ``ForwardManyToOneDescriptor`` instance.

## `workflow_id` {#workflow_id}

## Source

`server/vueda/workflow/models.py:523`