webmcp
annotate framework/env/param/update.lua @ 3:795b764629ca
Version 1.0.3
Important bugfix related to internal forwards (Bug was introduced by the restriction of views with underscore prefix in Version 1.0.2)
Important bugfix related to internal forwards (Bug was introduced by the restriction of views with underscore prefix in Version 1.0.2)
| author | jbe |
|---|---|
| date | Thu Dec 10 12:00:00 2009 +0100 (2009-12-10) |
| parents | 9fdfb27f8e67 |
| children |
| rev | line source |
|---|---|
| jbe/bsw@0 | 1 --[[-- |
| jbe/bsw@0 | 2 param.update( |
| jbe/bsw@0 | 3 record, -- database record to be updated |
| jbe/bsw@0 | 4 key_and_field_name1, -- name of CGI parameter and record field |
| jbe/bsw@0 | 5 key_and_field_name2, -- another name of a CGI parameter and record field |
| jbe/bsw@0 | 6 { |
| jbe/bsw@0 | 7 key3, -- name of CGI parameter |
| jbe/bsw@0 | 8 field_name3 -- name of record field |
| jbe/bsw@0 | 9 } |
| jbe/bsw@0 | 10 ) |
| jbe/bsw@0 | 11 |
| jbe/bsw@0 | 12 This function can update several fields of a database record using GET/POST request parameters (or internal/exchanged parameters). The type of each parameter is automatically determined by the class of the record (_class:get_colums()[field].type). |
| jbe/bsw@0 | 13 --]]-- |
| jbe/bsw@0 | 14 |
| jbe/bsw@0 | 15 function param.update(record, mapping_info, ...) |
| jbe/bsw@0 | 16 if not mapping_info then |
| jbe/bsw@0 | 17 return |
| jbe/bsw@0 | 18 end |
| jbe/bsw@0 | 19 assert(record, "No record given for param.update(...).") |
| jbe/bsw@0 | 20 assert(record._class, "Record passed to param.update(...) has no _class attribute.") |
| jbe/bsw@0 | 21 local key, field_name |
| jbe/bsw@0 | 22 if type(mapping_info) == "string" then |
| jbe/bsw@0 | 23 key = mapping_info |
| jbe/bsw@0 | 24 field_name = mapping_info |
| jbe/bsw@0 | 25 else |
| jbe/bsw@0 | 26 key = mapping_info[1] |
| jbe/bsw@0 | 27 field_name = mapping_info[2] |
| jbe/bsw@0 | 28 end |
| jbe/bsw@0 | 29 assert(key, "No key given in parameter of param.update(...).") |
| jbe/bsw@0 | 30 assert(field_name, "No field name given in parameter of param.update(...).") |
| jbe/bsw@0 | 31 local column_info = record._class:get_columns()[field_name] |
| jbe/bsw@0 | 32 if not column_info then |
| jbe/bsw@0 | 33 error('Type of column "' .. field_name .. '" is unknown.') |
| jbe/bsw@0 | 34 end |
| jbe/bsw@0 | 35 local new_value = param.get(key, column_info.type) |
| jbe/bsw@0 | 36 if new_value ~= record[field_name] then |
| jbe/bsw@0 | 37 record[field_name] = new_value |
| jbe/bsw@0 | 38 end |
| jbe/bsw@0 | 39 return param.update(record, ...) -- recursivly process following arguments |
| jbe/bsw@0 | 40 end |