We currently can use a stdWrap on SOLR_RELATION like this:

plugin.tx_solr.index.queue {
	pages {
		myfield_stringM = SOLR_RELATION
		myfield_stringM {
			localField = myfield
			stdWrap.dataWrap = before | after
		}
	}
}

This is working fine for 0,n relation but with n,n (MM) relations, the stdWrap is not applied.

This is due to the fact that getRelatedItemsFromMMTable() method does not call stdWrap() method where getRelatedItemsFromForeignTable() does by calling resolveRelatedValue()

You can test on a MM relation with sys_category for example.

Target versions:

• 12.0.x/main
• 11.5.x

Relates: #3152