on-demand release 3.9dev+
[moodle.git] / dataformat / upgrade.txt
CommitLineData
bff1edbe
BH
1This files describes API changes in /dataformat/ download system,
2information provided here is intended especially for developers.
3
d4606c1b 4=== 3.4 ===
bff1edbe 5
d4606c1b 6* In order to allow multiple sheets in an exported file the functions write_header() and write_footer() have
e0ee37e4
MN
7 been removed from core dataformat plugins and have been replaced.
8 - write_header() has been replaced with the two functions start_output() and start_sheet().
9 - write_footer() has been replaced with the two functions close_output() and close_sheet().
d4606c1b
MN
10 For backwards compatibility write_header() and write_footer() will continue to work but if used will
11 trigger the function error_log().
bff1edbe 12
d4606c1b
MN
13=== 3.1 ===
14* Added new plugin system with low memory support for csv, ods, xls and json