Is there a way of getting all the unique keyword index i.e. Subject in Plone by querying the catalog?
I have been using this as a guide but not yet successful.
This is what I have so far
def search_content_by_keywords(self):
"""
Attempting to search the catalog
"""
catalog = self.context.portal_catalog
query = {}
query['Subject'] = 'Someval'
results = catalog.searchResults(query)
return results
Instead of passing the keyword, I want to fetch all the keywords