1 This file describes API changes in core filter API and plugins,
2 information provided here is intended especially for developers.
6 * Filters can be applied at different stages - before text format conversion, before text cleaning or after text cleaning.
7 It is recommended that add-on filter developers use early formatting stages to prevent security issues caused by
8 modification of already sanitised text.
10 * The moodle-filter_mathjaxloader-loader yui module has been deprecated. We create amd filter_mathjaxloader/loader to replace it.
14 * The Word censorship (filter_censor) filter has been completely removed from core. It has been moved to the plugins database
15 repository, so it can still be installed as a third-party plugin.
19 * The following functions, previously used (exclusively) by upgrade steps are not available anymore because of the upgrade cleanup performed for this version. See MDL-65809 for more info:
20 - filter_mathjaxloader_upgrade_cdn_cloudflare()
21 - filter_mathjaxloader_upgrade_mathjaxconfig_equal()
25 * Although there is no API change that require you to update your filter,
26 if you use the filter_phrases() helper method, you may wish to take
27 advantage of the changes that were made in MDL-47962 to improve performance.
29 Now, instead of having to compute the replacement HTML for each phrase before
30 you construct the filterobject for it. You can instead pass a callback to
31 the filterobject constructor which is only called if the phrase is used.
33 To understand how to use this, see the comment on filterobject::__construct and
34 look at the filter_glossary changes as an example:
35 https://github.com/moodle/moodle/commit/5a8c44d000ecc5669db26aefebe447f688e8f2ce
39 * New argument $skipfilters to filter_manager::filter_text to allow applying
40 the filters with a given one omitted.
42 * New admin setting class admin_setting_filter_types which can be used if you
43 want to make the disablefilters value in your code configurable.
45 * Methods filter_manager::text_filtering_hash and moodle_text_filter::hash have been
46 deprecated. There were use by the old Moodle filtered text caching system
47 that was removed several releases ago.
51 * Finally filter may use $PAGE and $OUTPUT, yay!
52 * Old global text caching was removed, each filter is now responsible
57 * filtersettings.php is now deprecated, migrate to standard settings.php
61 * legacy_filter emulation was removed
62 * support for 'mod/*' filters was removed
63 * use short filter name instead of old path, ex.: 'filter/tex' ---> 'tex'
64 in all filter API functions and methods
68 * new setup() method added to moodle_text_filter, invoked before
69 filtering happens, used to add all the requirements to the page
70 (js, css...) and/or other init tasks. See filter/glossary for
71 an example using the API (and MDL-32279 for its justification).
75 * legacy filters and legacy locations have been deprecated, so any
76 old filter should be updated to use the new moodle_text_filter,
77 and any filter bundled under mod/xxxx directories be moved to
78 /filter/xxxx (MDL-29995). They will stop working completely in
79 Moodle 2.3 (MDL-29996). See the glossary or data filters for
80 examples of legacy module filters and locations already updated.