MDL-43882 lib: Adding info about the new performance metric
[moodle.git] / lib / upgrade.txt
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690a55f6 1This files describes API changes in core libraries and APIs,
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2information provided here is intended especially for developers.
3
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4=== 2.7 ===
5
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6* $core_renderer->block_move_target() changed to support more verbose move-block-here descriptions.
7
a4582a51 8DEPRECATIONS:
994e5662 9* $module uses in mod/xxx/version.php files is now deprecated. Please use $plugin instead. It will be removed in Moodle 2.10.
3345e24f 10* Update init methods in all event classes - "level" property was renamed to "edulevel", the level property is now deprecated.
c4b0d6dc 11* Abstract class \core\event\course_module_instances_list_viewed is deprecated now, use \core\event\instances_list_viewed instead.
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12* mod_book\event\instances_list_viewed has been deprecated. Please use mod_book\event\course_module_instance_list_viewed instead.
13* mod_chat\event\instances_list_viewed has been deprecated. Please use mod_chat\event\course_module_instance_list_viewed instead.
14* mod_choice\event\instances_list_viewed has been deprecated. Please use mod_choice\event\course_module_instance_list_viewed instead.
15* mod_feedback\event\instances_list_viewed has been deprecated. Please use mod_feedback\event\course_module_instance_list_viewed instead.
16* mod_page\event\instances_list_viewed has been deprecated. Please use mod_page\event\course_module_instance_list_viewed instead.
1f1a8f03 17* The constants FRONTPAGECOURSELIST, FRONTPAGETOPICONLY & FRONTPAGECOURSELIMIT have been removed.
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18* Various cm_info methods have been deprecated in favour of their read-only properties (get_url(), get_content(), get_extra_classes(),
19 get_on_click(), get_custom_data(), get_after_link, get_after_edit_icons)
af64bc61 20* The ajaxenabled function has been deprecated and always returns true. All code should be fully functional in Javascript.
c4b0d6dc 21
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22YUI:
23 * The lightbox attribute for moodle-core-notification-dialogue has been
24 deprecated and replaced by the modal attribute. This was actually
25 changed in Moodle 2.2, but has only been marked as deprecated now. It
26 will be removed in Moodle 2.9.
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27 * When destroying any type of dialogue based on moodle-core-notification, the relevant content is also removed from
28 the DOM. Previously it was left orphaned.
5947ab33 29
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30JavaSript:
31 * The findChildNodes global function has been deprecated. Y.all should
32 be used instead.
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33 * The callback argument to confirm_action and M.util.show_confirm_dialog has been deprecated. If you need to write a
34 confirmation which includes a callback, please use moodle-core-notification-confirmation and attach callbacks to the
35 events provided.
a4582a51 36
9843e5ec 37* New locking api and admin settings to configure the system locking type.
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38* New "Time spent waiting for the database" performance metric displayed along with the
39 other MDL_PERF vars; the change affects both the error logs and the vars displayed in
40 the page footer.
9843e5ec 41
9e19a0f0 42=== 2.6 ===
8e8891b7 43
cc8fecb5 44* Use new methods from core_component class instead of get_core_subsystems(), get_plugin_types(),
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45 get_plugin_list(), get_plugin_list_with_class(), get_plugin_directory(), normalize_component(),
46 get_component_directory() and get_plugin_list_with_file(). The names of the new methods are
47 exactly the same, the only differences are that core_component::get_plugin_types() now always returns
48 full paths and core_component::get_plugin_list() does not accept empty parameter any more.
d534708f 49* Use core_text::* instead of textlib:: and also core_collator::* instead of collatorlib::*.
af578aec 50* Use new function moodleform::mock_submit() to simulate form submission in unit tests (backported).
85b38061 51* New $CFG->localcachedir setting useful for cluster nodes. Admins have to update X-Sendfile aliases if used.
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52* MS SQL Server drivers are now using NVARCHAR(MAX) instead of NTEXT and VARBINARY(MAX) instead of IMAGE,
53 this change should be fully transparent and it should help significantly with add-on compatibility.
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54* The string manager classes were renamed. Note that they should not be modified or used directly,
55 always use get_string_manager() to get instance of the string manager.
aae18d2a 56* The ability to use an 'insecure' rc4encrypt/rc4decrypt key has been removed.
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57* Use $CFG->debugdeveloper instead of debugging('', DEBUG_DEVELOPER).
58* Use set_debugging(DEBUG_xxx) when changing debugging level for current request.
d55f05ef 59* Function moveto_module() does not modify $mod argument and instead now returns the new module visibility value.
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60* Use behat_selectors::get_allowed_text_selectors() and behat_selectors::get_allowed_selectors() instead of
61 behat_command::$allowedtextselectors and behat_command::$allowedselectors
ac2b2713 62* Subplugins are supported in admin tools and local plugins.
71ab7e51 63* file_packer/zip_packer API has been modified so that key functions support a new file_progress interface
64 to report progress during long operations. Related to this, zip_archive now supports an estimated_count()
65 function that returns an approximate number of entries in the zip faster than the count() function.
d872881f 66* Class cm_info no longer extends stdClass. All properties are read-only and calculated on first request only.
44ddd2a1 67* Class course_modinfo no longer extends stdClass. All properties are read-only.
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68* Database fields modinfo and sectioncache in table course are removed. Application cache core/coursemodinfo
69 is used instead. Course cache is still reset, rebuilt and retrieved using function rebuild_course_cache() and
70 get_fast_modinfo(). Purging all caches and every core upgrade purges course modinfo cache as well.
71 If function get_fast_modinfo() is called for multiple courses make sure to include field cacherev in course
72 object.
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73* Internal (noreply and support) user support has been added for sending/receiving message.
74 Use core_user::get_noreply_user() and core_user::get_support_user() to get noreply and support user's respectively.
75 Real users can be used as noreply/support users by setting $CFG->noreplyuserid and $CFG->supportuserid
137885b7 76* New function readfile_allow_large() in filelib.php for use when very large files may need sending to user.
e87214bd 77* Use core_plugin_manager::reset_caches() when changing visibility of plugins.
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78* Implement new method get_enabled_plugins() method in subplugin info classes.
79* Each plugin should include version information in version.php.
723a6e56 80* Module and block tables do not contain version column any more, use get_config('xx_yy', 'version') instead.
5fed8433 81* $USER->password field is intentionally unset so that session data does not contain password hashes.
38fc0130 82* Use core_shutdown_manager::register_function() instead of register_shutdown_function().
c858655d 83* New file packer for .tar.gz files; obtain by calling get_file_packer('application/x-gzip'). Intended initially
84 for use in backup/restore only, as there are limitations on supported filenames. Also new packer for
85 backups which supports both compression formats; get_file_packer('application/vnd.moodle.backup').
86* New optional parameter to stored_file::get_content_file_handle to open file handle with 'gzopen' instead
87 of 'fopen' to read gzip-compressed files if required.
6c679d15 88* update_internal_user_password() and setnew_password_and_mail() now trigger user_updated event.
b2858b91 89* Add thirdpartylibs.xml file to plugins that bundle any 3rd party libraries.
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90* New class introduced to help auto generate zIndex values for modal dialogues. Class "moodle-has-zindex"
91 should set on any element which uses a non-default zindex and needs to ensure it doesn't show above a
92 dialogue.
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93* $CFG->filelifetime is now used consistently for most file serving operations, the default was lowered
94 to 6 hours from 24 hours because etags and x-sendfile support should make file serving less expensive.
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95* Date format locale charset for windows server will come from calendar type and for gregorian it will use
96 lang file.
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97* The library to interact with Box.net (class boxclient) is only compatible with their APIv1 which
98 reaches its end of life on the 14th of Dec. You should migrate your scripts to make usage of the
99 new class boxnet_client(). Note that the method names and return values have changed.
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100* Settings pages are now possible for Calendar type plugins. Calendar type plugins that require a settings page to
101 work properly will need to set their requires version to a number that is equal to or grater than the 2.6.1 release version.
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102* The admin/tool/generator tool was overhauled to use testing data generators and the previous interface to create
103 test data was removed (it was not working correctly anyway). If you were using this tool you will probably need to
104 update your code.
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105
106DEPRECATIONS:
107Various previously deprecated functions have now been altered to throw DEBUG_DEVELOPER debugging notices
108and will be removed in a future release (target: 2.8), a summary follows:
109
110Accesslib:
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111 * get_context_instance() -> context_xxxx::instance()
112 * get_context_instance_by_id() -> context::instance_by_id($id)
113 * get_system_context() -> context_system::instance()
114 * context_moved() -> context::update_moved()
115 * preload_course_contexts() -> context_helper::preload_course()
116 * context_instance_preload() -> context_helper::preload_from_record()
117 * context_instance_preload_sql() -> context_helper::get_preload_record_columns_sql()
118 * get_contextlevel_name() -> context_helper::get_level_name()
119 * create_contexts() -> context_helper::create_instances()
120 * cleanup_contexts() -> context_helper::cleanup_instances()
121 * build_context_path() -> context_helper::build_all_paths()
122 * print_context_name() -> $context->get_context_name()
123 * mark_context_dirty() -> $context->mark_dirty()
124 * delete_context() -> $context->delete_content() or context_helper::delete_instance()
125 * get_context_url() -> $context->get_url()
126 * get_course_context() -> $context->get_course_context()
127 * get_parent_contexts() -> $context->get_parent_context_ids()
128 * get_parent_contextid() -> $context->get_parent_context()
129 * get_child_contexts() -> $context->get_child_contexts()
130 * rebuild_contexts() -> $context->reset_paths()
131 * get_user_courses_bycap() -> enrol_get_users_courses()
132 * get_courseid_from_context() -> $context->get_course_context(false)
133 * get_role_context_caps() -> (no replacement)
134 * load_temp_role() -> (no replacement)
135 * remove_temp_roles() -> (no replacement)
136 * get_related_contexts_string() -> $context->get_parent_context_ids(true)
137 * get_recent_enrolments() -> (no replacement)
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138
139Enrollment:
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140 * get_course_participants() -> get_enrolled_users()
141 * is_course_participant() -> is_enrolled()
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142
143Output:
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144 * current_theme() -> $PAGE->theme->name
145 * skip_main_destination() -> $OUTPUT->skip_link_target()
146 * print_container() -> $OUTPUT->container()
147 * print_container_start() -> $OUTPUT->container_start()
148 * print_container_end() -> $OUTPUT->container_end()
149 * print_continue() -> $OUTPUT->continue_button()
150 * print_header() -> $PAGE methods
151 * print_header_simple() -> $PAGE methods
152 * print_side_block() -> $OUTPUT->block()
153 * print_arrow() -> $OUTPUT->arrow()
154 * print_scale_menu_helpbutton() -> $OUTPUT->help_icon_scale($courseid, $scale)
155 * print_checkbox() -> html_writer::checkbox()
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156
157Navigation:
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158 * print_navigation() -> $OUTPUT->navbar()
159 * build_navigation() -> $PAGE->navbar methods
160 * navmenu() -> (no replacement)
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161 * settings_navigation::
162 get_course_modules() -> (no replacement)
05226d76 163
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164Files and repositories:
165 * stored_file::replace_content_with() -> stored_file::replace_file_with()
166 * stored_file::set_filesize() -> stored_file::replace_file_with()
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167 * stored_file::get_referencelifetime() -> (no replacement)
168 * repository::sync_external_file() -> see repository::sync_reference()
169 * repository::get_file_by_reference() -> repository::sync_reference()
170 * repository::
171 get_reference_file_lifetime() -> (no replacement)
172 * repository::sync_individual_file() -> (no replacement)
173 * repository::reset_caches() -> (no replacement)
2a68ee0e 174
05226d76 175Calendar:
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176 * add_event() -> calendar_event::create()
177 * update_event() -> calendar_event->update()
178 * delete_event() -> calendar_event->delete()
179 * hide_event() -> calendar_event->toggle_visibility(false)
180 * show_event() -> calendar_event->toggle_visibility(true)
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181
182Misc:
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183 * filter_text() -> format_text(), format_string()...
184 * httpsrequired() -> $PAGE->https_required()
185 * detect_munged_arguments() -> clean_param([...], PARAM_FILE)
186 * mygroupid() -> groups_get_all_groups()
187 * js_minify() -> core_minify::js_files()
188 * css_minify_css() -> core_minify::css_files()
64501eee 189 * course_modinfo::build_section_cache() -> (no replacement)
3bcf6b3c 190 * generate_email_supportuser() -> core_user::get_support_user()
c3d2fbf9 191
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192Sessions:
193 * session_get_instance()->xxx() -> \core\session\manager::xxx()
194 * session_kill_all() -> \core\session\manager::kill_all_sessions()
195 * session_touch() -> \core\session\manager::touch_session()
196 * session_kill() -> \core\session\manager::kill_session()
197 * session_kill_user() -> \core\session\manager::kill_user_sessions()
198 * session_gc() -> \core\session\manager::gc()
199 * session_set_user() -> \core\session\manager::set_user()
200 * session_is_loggedinas() -> \core\session\manager::is_loggedinas()
201 * session_get_realuser() -> \core\session\manager::get_realuser()
202 * session_loginas() -> \core\session\manager::loginas()
203
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204User-agent related functions:
205 * check_browser_operating_system() -> core_useragent::check_browser_operating_system()
206 * check_browser_version() -> core_useragent::check_browser_version()
207 * get_device_type() -> core_useragent::get_device_type()
208 * get_device_type_list() -> core_useragent::get_device_type_list()
209 * get_selected_theme_for_device_type() -> core_useragent::get_device_type_theme()
210 * get_device_cfg_var_name() -> core_useragent::get_device_type_cfg_var_name()
211 * set_user_device_type() -> core_useragent::set_user_device_type()
212 * get_user_device_type() -> core_useragent::get_user_device_type()
213 * get_browser_version_classes() -> core_useragent::get_browser_version_classes()
9e19a0f0 214
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215YUI:
216 * moodle-core-notification has been deprecated with a recommendation of
73b4c1da 217 using its subclasses instead. This is to allow for reduced page
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218 transport costs. Current subclasses include:
219 * dialogue
220 * alert
221 * confirm
222 * exception
223 * ajaxexception
224
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225Event triggering and event handlers:
226 * All existing events and event handlers should be replaced by new
227 event classes and matching new event observers.
228 * See http://docs.moodle.org/dev/Event_2 for more information.
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229 * The following events will be entirely removed, though they can still
230 be captured using handlers, but they should not be used any more.
231 * groups_members_removed -> \core\event\group_member_removed
232 * groups_groupings_groups_removed -> (no replacement)
233 * groups_groups_deleted -> \core\event\group_deleted
234 * groups_groupings_deleted -> \core\event\grouping_deleted
63deb5c3 235 * edit_module_post_actions() does not trigger events any more.
f0f0e1fe 236
a2602457 237=== 2.5.1 ===
238
239* New get_course() function for use when obtaining the course record from database. Will
240 reuse existing $COURSE or $SITE globals if possible to improve performance.
241
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242=== 2.5 ===
243
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244* The database drivers (moodle_database and subclasses) aren't using anymore the ::columns property
245 for caching database metadata. MUC (databasemeta) is used instead. Any custom DB driver should
246 apply for that change.
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247* The cron output has been changed to include time and memory usage (see cron_trace_time_and_memory()),
248 so any custom utility relying on the old output may require modification.
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249* Function get_max_file_sizes now returns an option for (for example) "Course limit (500MB)" or
250 "Site limit (200MB)" when appropriate with the option set to 0. This function no longer returns
251 an option for 0 bytes. Existing code that was replacing the 0 option in the return
252 from this function with a more sensible message, can now use the return from this function directly.
9a36be73 253* Functions responsible for output in course/lib.php are deprecated, the code is moved to
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254 appropriate renderers: print_section(), print_section_add_menus(), get_print_section_cm_text(),
255 make_editing_buttons()
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256 See functions' phpdocs in lib/deprecatedlib.php
257* Function get_print_section_cm_text() is deprecated, replaced with methods in cm_info
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258* zip_packer may create empty zip archives, there is a new option to ignore
259 problematic files when creating archive
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260* The function delete_course_module was deprecated and has been replaced with
261 course_delete_module. The reason for this was because the function delete_course_module
262 only partially deletes data, so wherever it was called extra code was needed to
263 perform the whole deletion process. The function course_delete_module now takes care
264 of the whole process.
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265* curl::setopt() does not accept constant values any more. As it never worked properly,
266 we decided to make the type check stricter. Now, the keys of the array pass must be a string
267 corresponding to the curl constant name.
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268* Function get_users_listing now return list of users except guest and deleted users. Previously
269 deleted users were excluded by get_users_listing. As guest user is not expected while browsing users,
270 and not included in get_user function, it will not be returned by get_users_listing.
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271* The add_* functions in course/dnduploadlib.php have been deprecated. Plugins should be using the
272 MODNAME_dndupload_register callback instead.
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273* The signature of the add() method of classes implementing the parentable_part_of_admin_tree
274 interface (such as admin_category) has been extended. The new parameter allows the caller
275 to prepend the new node before an existing sibling in the admin tree.
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276* condition_info:get_condition_user_fields($formatoptions) now accepts the optional
277 param $formatoptions, that will determine if the field names are processed by
278 format_string() with the passed options.
689096bc 279* remove all references to $CFG->gdversion, GD PHP extension is now required
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280* Formslib will now throw a developer warning if a PARAM_ type hasn't been set for elements which
281 need it. Please set PARAM_RAW explicitly if you do not want any cleaning.
4e0b6025 282* Functions responsible for managing and accessing course categories are moved to class coursecat
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283 in lib/coursecatlib.php, functions responsible for rendering courses and categories lists are
284 moved to course/renderer.php. The following global functions are deprecated: make_categories_list(),
6e1d1ee0 285 category_delete_move(), category_delete_full(), move_category(), course_category_hide(),
8db5dcb7 286 course_category_show(), get_course_category(), create_course_category(), get_all_subcategories(),
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287 get_child_categories(), get_categories(), print_my_moodle(), print_remote_course(),
288 print_remote_host(), print_whole_category_list(), print_category_info(), get_course_category_tree(),
289 print_courses(), print_course(), get_category_courses_array(), get_category_courses_array_recursively(),
290 get_courses_wmanagers()
291 See http://docs.moodle.org/dev/Courses_lists_upgrade_to_2.5
0e2ca62e 292* $core_renderer->block_move_target() changed to support more verbose move-block-here descriptions.
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293* Additional (optional) param $onlyactive has been added to get_enrolled_users, count_enrolled_users
294 functions to get information for only active (excluding suspended enrolments) users. Included two
295 helper functions extract_suspended_users, get_suspended_userids to extract suspended user information.
e87214bd 296* The core_plugin_manager class now provides two new helper methods for getting information
d7d48b40 297 about known plugins: get_plugins_of_type() and get_subplugins_of_plugin().
e87214bd 298* The get_uninstall_url() method of all subclasses of \core\plugininfo\base class is now expected
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299 to always return moodle_url. Subclasses can use the new method is_uninstall_allowed()
300 to control the availability of the 'Uninstall' link at the Plugins overview page (previously
301 they would do it by get_uninstall_url() returning null). By default, URL to a new general plugin
302 uninstall tool is returned. Unless the plugin type needs extra steps that can't be handled by
303 plugininfo_xxx::uninstall() method or xmldb_xxx_uninstall() function, this default URL should
304 satisfy all plugin types.
9a36be73 305
4efcfaa3 306Database (DML) layer:
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307* $DB->sql_empty() is deprecated, you have to use sql parameters with empty values instead,
308 please note hardcoding of empty strings in SQL queries breaks execution in Oracle database.
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309* Indexes must not be defined on the same columns as keys, this is now reported as fatal problem.
310 Please note that internally we create indexes instead of foreign keys.
9a36be73 311
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312YUI changes:
313* M.util.help_icon has been deprecated. Code should be updated to use moodle-core-popuphelp
314 instead. To do so, remove any existing JS calls to M.util.help_icon from your PHP and ensure
315 that your help link is placed in a span which has the class 'helplink'.
316
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317=== 2.4 ===
318
319* Pagelib: Numerous deprecated functions were removed as classes page_base, page_course
320 and page_generic_activity.
704533fc 321* use $CFG->googlemapkey3 instead of removed $CFG->googlemapkey and migrate to Google Maps API V3
b874d5c6 322* Function settings_navigation::add_course_editing_links() is completely removed
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323* function global_navigation::format_display_course_content() is removed completely (the
324 functionality is moved to course format class)
325* in the function global_navigation::load_generic_course_sections() the argument $courseformat is
326 removed
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327* New component and itemid columns in groups_members table - this allows plugin to create protected
328 group memberships using 'xx_yy_allow_group_member_remove' callback and there is also a new restore
329 callback 'xx_yy_restore_group_member()'.
330* New general role assignment restore plugin callback 'xx_yy_restore_role_assignment()'.
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331* functions get_generic_section_name(), get_all_sections(), add_mod_to_section(), get_all_mods()
332 are deprecated. See their phpdocs in lib/deprecatedlib.php on how to replace them
ee362526 333
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334YUI changes:
335* moodle-enrol-notification has been renamed to moodle-core-notification
3542e01a 336* YUI2 code must now use 2in3, see http://yuilibrary.com/yui/docs/yui/yui-yui2.html
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337* M.util.init_select_autosubmit() and M.util.init_url_select() have been deprecated. Code using this should be updated
338 to use moodle-core-formautosubmit
d2a27ab0 339
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340Unit testing changes:
341* output debugging() is not sent to standard output any more,
342 use $this->assertDebuggingCalled(), $this->assertDebuggingNotCalled(),
343 $this->getDebuggingMessages() or $this->assertResetDebugging() instead.
344
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345=== 2.3 ===
346
347Database layer changes:
348* objects are not allowed in paramters of DML functions, use explicit casting to strings if necessary
349
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350Note:
351* DDL and DML methods which were deprecated in 2.0 have now been removed, they will no longer produce
352debug messages and will produce fatal errors
e618cdf3 353
796495fe 354API changes:
daefd6eb 355
796495fe 356* send_stored_file() has changed its interface
daefd6eb 357* deleted several resourcelib_embed_* functions from resourcelib.php
796495fe 358
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359=== 2.2 ===
360
361removed unused libraries:
362* odbc, base32, CodeSniffer, overlib, apd profiling, kses, Smarty, PEAR Console, swfobject, cssshover.htc, md5.js
363
364API changes:
365* new admin/tool plugin type
366* new context API - old API is still available
8e470797 367* deleted users do not have context any more
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368* removed global search
369
370
371=== 2.1 ===
372
373API changes:
374* basic suport for restore from 1.9
375* new mobile devices API
376* new questions API
377
378
379=== 2.0 ===
380
381API changes:
382* new DML API - http://docs.moodle.org/dev/DML_functions
383* new DDL API - http://docs.moodle.org/dev/DDL_functions
384* new file API - http://docs.moodle.org/dev/File_API
385* new $PAGE and $OUTPUT API
386* new navigation API
387* new theme API - http://docs.moodle.org/dev/Theme_changes_in_2.0
388* new javascript API - http://docs.moodle.org/dev/JavaScript_usage_guide
389* new portfolio API
390* new local plugin type
391* new translation support - http://lang.moodle.org
392* new web service API
393* new cohorts API
394* new messaging API
395* new rating API
396* new comment API
397* new sessions API
398* new enrolment API
399* new backup/restore API
400* new blocks API
401* new filters API
402* improved plugin support (aka Frankenstyle)
403* new registration and hub API
404* new course completion API
405* new plagiarism API
406* changed blog API
407* new text editor API
19526d91 408* new my moodle and profiles API