Object Reference for Salesforce and Force.com

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KnowledgeArticleVersionHistory

Enables read-only access to the full history of an article. This object is available in API version 25.0 and later.

Supported Calls

describeSObjects(),  getDeleted(),  getUpdated(),  query(),  retrieve()

Special Access Rules

This object respects field, entity, and record-level security. You must have at least “Read” permission on the article type or the field to access its history. For data category security, Salesforce determines access based on the categorization of the online version of an article. If there is no online version, then security is applied based on the archived version, followed by the security of the draft version.

Fields

Field Name Details
EventType
Type
picklist
Properties
Filter, Group, Restricted picklist, Sort
Description

The type of event that is tracked in the history table.

FieldName
Type
picklist
Properties
Filter, Group, Nillable, Restricted picklist, Sort
Description

Name of the tracked field.

Language
Type
picklist
Properties
Filter, Group, Restricted picklist, Sort
Description
The language that the article is written in, such as French or Chinese (Traditional). Querying or searching articles in SOQL or SOSL requires that you specify the Language field in the WHERE clause. The language must be the same for all article types.
NewValue
Type
anyType
Properties
Nillable, Sort
Description

The new value of the field that was changed.
OldValue
Type
anyType
Properties
Nillable, Sort
Description

The most recent value of the field before it was changed.
ParentId
Type
reference
Properties
Filter, Group, Sort
Description

The ID of the article.
ParentSobjectType
Type
picklist
Properties
Filter, Group, Restricted picklist, Sort
Description

The type of object that contains the field.

VersionId
Type
reference
Properties
Filter, Group, Nillable, Sort
Description

The ID assigned to a version of the article.

VersionNumber
Type
int
Properties
Filter, Group, Sort
Description
The number assigned to a version of an article. This field is available in API version 24.0 and later.

Usage

Use this object to query events in the history of an article. For example, you can retrieve the number of edits a particular user has made to an article, how many times the article has been published, and so on.