observe_survey_result_column_values/3

Modify row with answers for export. The header columns are given and the values that are known are set in the folded value. The user_id is the user who filled in the answers for this row.

Type:

foldl

Return:

#{ binary() =\> iodata() }

#survey_result_column_values{} properties:

• id: m_rsc:resource_id()

• handler: binary|undefined

• format: html|text

• user_id: m_rsc:resource_id()

• answer: proplists:proplist()

• columns: list