This article describes the Wix Pro Gallery fields you can search and aggregate on a site.
To search or aggregate Wix Pro Gallery items on a site, set the search API documentType parameter to PROGALLERY_ITEM.
Description: Document type that was searched. In this case, PROGALLERY_ITEM.
Type: String
Can search the content of this field: No
Can facet: No
Can sort: No
Can filter: No
Description: The ID of the pro gallery item.
Type: String
Can search the content of this field: No
Can facet: No
Can sort: No
Can filter: No
Description: Post title.
Type: String
Can search the content of this field: Yes
Can facet: No
Can sort: No
Can filter: in, eq, ne, gt, ge, lt, le
Description: Text of the post or comment.
Type: String
Can search the content of this field: Yes
Can facet: No
Can sort: No
Can filter: No
Description: Whether the gallery item is a video.
Type: Boolean
Can search the content of this field: No
Can facet: No
Can sort: No
Can filter: eq, ne, exists