1.1 --- a/libraries/mondelefant/mondelefant.lua	Sat Nov 14 15:44:53 2015 +0100
     1.2 +++ b/libraries/mondelefant/mondelefant.lua	Sat Nov 14 17:07:03 2015 +0100
     1.3 @@ -915,11 +915,22 @@
     1.4  
     1.5  Primary key of a database class (model). Defaults to "id".
     1.6  
     1.7 +If the primary key is a tuple, then a sequence (table with integer keys mapped to the column names) must be used. If the primary key is contained in a JSON document within a table column, then a special object with the following fields is expected: {json_doc = "column_name", key = "field_name_within_json_object", type = "postgresql_type"}.
     1.8 +
     1.9  --]]--
    1.10  class_prototype.primary_key = "id"
    1.11  --//--
    1.12  
    1.13  --[[--
    1.14 +<db_class>.document_column
    1.15 +
    1.16 +Optional column name to redirect key lookups to. This can be used to allow for an easier access to fields of a JSON document.
    1.17 +
    1.18 +--]]--
    1.19 +class_prototype.document_column = nil
    1.20 +--//--
    1.21 +
    1.22 +--[[--
    1.23  db_handle =               -- database connection handle used by this class
    1.24  <db_class>:get_db_conn()
    1.25