System fields

System fields

Some fields are system-generated. The system fields are read-only fields that provide information about the content or any related record from the system, like a Content item ID or when a content item was created or last changed. You can recognize system fields by the prefix _.

Please see the full list of system fields below.

Content

_id

UUID Unique identifier for each item.

__typename

string At any point in a query __typename can be requested to get the name of the object type returned.

_environment_id

string Unique identifier of the Prepr environment.

_created_on

ISO 8601 UTC time at which the content item was created.

_changed_on

ISO 8601 UTC time at which the content item was last updated.

_publish_on

ISO 8601 UTC time at which the content item is or will be published.

_slug

string Unique reference within a content model.

_read_time

int If the content item contains String/Text fields, a calculated read time is available.

Localization

When your Prepr environment is set-up for localization. The content model will be extended with the following fields:

_locale

string Locale that is returned for this content item.

_locales

list of: string List of locales that are present in the content item.

_localizations

list of: self Returns the content item in all available locales.

Personalization and A/B testing

When A/B testing or personalization is enabled, the following fields are available for content items and components in the Stack to support options for analytics and SSR.

_context

self Grouping details about A/B testing or personalization with the following fields:

kind

string Contains a value of PERSONALIZATION or AB_TEST

group_id

string Unique identifier for each personalization and A/B test group in the Stack

variant_id

string The Id of the personalization or A/B test variant. For personalization the value is a combination of the audience and country segments, while for A/B testing, it will have a value of A OR B.

countries

list of: string Contains a list of two-letter country codes of the personalization country segments.

segments

list of: string Contains a list of customer segment ID's. Each customer segment will have two Id's listed, the Prepr UUID and the Customer Segment ID.

Events

The total count of events that are posted to Prepr.

Note Requesting fields listed below will reduce the cache time significantly.

_views

int Total number of View events for this content item.

_likes

int Total number of Like events for this content item.

_dislikes

int Total number of Dislike events for this content item.

_comments

int Total number of Comment events for this content item.

_bookmarks

int Total number of Bookmark events for this content item.

_subscribes

int Total number of Subscribe events for this content item.

_purchases

int Total number of Purchase events for this content item.

_votes

int Total number of Vote events for this content item.

_clickthroughs

int Total number of Clickthrough events for this content item.

_shares

int Total number of Share events for this content item.

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