TopicAssignment

Represents the assignment of a topic to a specific feed item or record. This object is available in API version 28.0 and later. Topics for objects is available in API version 30.0 and later. Administrators must enable topics for objects before users can add topics to records of that object type.

Supported Calls

create(), describeSObjects(), query(), retrieve()

Fields

Field Name	Details
EntityId	Type reference Properties Create, Filter, Group, Sort Description Identifier of the feed item or record.
EntityKeyPrefix	Type string Properties Filter, Group, idLookup, Sort Description The first three digits of the EntityID field, which identify the object type (account, opportunity, etc). This read-only field is available in API version 32.0 and later. Interface label is “Record Key Prefix,” which appears only in reports.
EntityType	Type string Properties Filter, Group, Nillable, Sort Description The standard name for the object type (account, opportunity, etc). This read-only field is available in API version 33.0 and later. Interface label is “Object Type,” which appears only in reports. In most cases, you should use this field rather than EntityKeyPrefix, which exists primarily to support older reports. Tip
NetworkId	Type reference Properties Create, Filter, Group, Nillable, Sort Description Identifier of the community to which the TopicAssignment belongs. This field is available only if Salesforce Communities is enabled in your organization.
TopicId	Type reference Properties Create, Filter, Group, Sort Description Identifier of the topic.

Usage

Use this object to query the assignments of topics to feed items or records. To assign or remove topics, you must have the “Assign Topics” permission.

In SOQL SELECT syntax, this object supports nested semi-joins, allowing queries on Knowledge articles assigned to specific topics. For example:

1SELECT parentId FROM KnowledgeArticleViewStat
2WHERE parentId in (SELECT KnowledgeArticleId FROM KnowledgeArticleVersion
3WHERE publishStatus = 'Online' AND language = 'en_US'
4AND  Id in (select EntityId from TopicAssignment where TopicId ='0T0xx0000000xxx'))

No SOQL limit if logged-in user has “View All Data” permission. If not, do one of the following:

Specify a LIMIT clause of 1,100 records or fewer.
Filter on Id or Entity when using a WHERE clause with "=".

Object Reference for Salesforce and Force.com

TopicAssignment

Supported Calls

Fields

Usage