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Settings (customization)
Bangbay Siboliban edited this page May 14, 2020
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Canvas has a series of advanced settings that can be customized to tweak behavior of the app. The way this system works is that the app requests a setting key and provides a default, and the default is used unless a value is found in the database. So, for example, to set a different code cogs base url, you would run:
Setting.set('codecogs.equation_image_link', "<your custom url>")
in a rails console, and then when the app runs code to get that setting:
Setting.get('codecogs.equation_image_link', 'http://latex.codecogs.com/gif.latex')
even though it still specifies a default, your customization is returned instead.
Generally we try to use these anywhere that we would have a constant in the code that we might want to tweak. We try to use sane defaults so that you shouldn't need to change any of these for a standard working version of canvas.
We don't currently have good documentation around these settings, but here is a script-generated list of settings, and how they are used. (https://gist.github.com/simonista/5a6b27c1a03a0da53acf)
- default:
'true' - usage:
if !files_domain? && Setting.get('block_html_frames', 'true') == 'true' && !@embeddable - location:
app/controllers/application_controller.rb:221
- default:
'30' - usage:
@start_date = Setting.get('calendar_feed_previous_days', '30').to_i.days.ago - location:
app/controllers/calendar_events_api_controller.rb:521
- default:
'366' - usage:
@end_date = Setting.get('calendar_feed_upcoming_days', '366').to_i.days.from_now - location:
app/controllers/calendar_events_api_controller.rb:522
- default:
'http://latex.codecogs.com/gif.latex' - usage:
base_url = Setting.get('codecogs.equation_image_link', 'http://latex.codecogs.com/gif.latex') - location:
app/controllers/equation_images_controller.rb:8
- default:
"true" - usage:
Setting.get("error_search_enabled", "true") == "true" - location:
app/controllers/errors_controller.rb:50
- default:
1.megabyte.to_s - usage:
if @attachment.size > Setting.get('attachment_json_response_max_size', 1.megabyte.to_s).to_i - location:
app/controllers/files_controller.rb:590
- default:
'50' - usage:
per_page = Setting.get('api_max_per_page', '50').to_i - location:
app/controllers/gradebooks_controller.rb:179
- default:
'35' - usage:
:chunk_size => Setting.get('gradebook2.submissions_chunk_size', '35').to_i, - location:
app/controllers/gradebooks_controller.rb:184
- default:
nil - usage:
:sis_app_url => Setting.get('sis_app_url', nil), - location:
app/controllers/gradebooks_controller.rb:218
- default:
nil - usage:
:sis_app_token => Setting.get('sis_app_token', nil) - location:
app/controllers/gradebooks_controller.rb:219
- default:
'0' - usage:
submissions_limit = Setting.get('gradebook_history_submission_count_threshold', '0').to_i - location:
app/controllers/gradebooks_controller.rb:232
- default:
2.seconds.to_s - usage:
@running_jobs_refresh_seconds = Setting.get('running_jobs_refresh_seconds', 2.seconds.to_s).to_f - location:
app/controllers/jobs_controller.rb:22
- default:
10.seconds.to_s - usage:
@job_tags_refresh_seconds = Setting.get('job_tags_refresh_seconds', 10.seconds.to_s).to_f - location:
app/controllers/jobs_controller.rb:23
- default:
90.minutes.to_s - usage:
allowed_delta = Setting.get('oauth.allowed_timestamp_delta', 90.minutes.to_s).to_i - location:
app/controllers/lti_api_controller.rb:92
- default:
'300' - usage:
per_page = Setting.get('page_views_csv_export_rows', '300').to_i - location:
app/controllers/page_views_controller.rb:198
- default:
nil - usage:
:GOOGLE_ANALYTICS_KEY => Setting.get('google_analytics_key', nil), - location:
app/controllers/pseudonym_sessions_controller.rb:129
- default:
nil - usage:
js_env :GOOGLE_ANALYTICS_KEY => Setting.get('google_analytics_key', nil) - location:
app/controllers/pseudonym_sessions_controller.rb:692
- default:
'').split(',').include?(@account.global_id.to_s - usage:
unless Setting.get('skip_sis_jobs_account_ids', '').split(',').include?(@account.global_id.to_s) - location:
app/controllers/sis_imports_api_controller.rb:330
- default:
nil - usage:
:googleAnalyticsAccount => Setting.get('google_analytics_key', nil), - location:
app/helpers/application_helper.rb:452
- default:
"false" - usage:
show_feedback_link = Setting.get("show_feedback_link", "false") == "true" - location:
app/helpers/application_helper.rb:656
- default:
10.minutes - usage:
Setting.get('access_token_last_used_threshold', 10.minutes).to_i - location:
app/models/access_token.rb:48
- default:
"9" - usage:
Setting.get("account_notification_default_months_in_display_cycle", "9").to_i - location:
app/models/account_notification.rb:100
- default:
30 - usage:
Setting.get('aac_debug_expire_minutes', 30).minutes - location:
app/models/account_authorization_config.rb:372
- default:
1.minute.to_s - usage:
Setting.get('ldap_failure_wait_time', 1.minute.to_s).to_i - location:
app/models/account_authorization_config.rb:376
- default:
5.seconds.to_s - usage:
default_timeout = Setting.get('ldap_timelimit', 5.seconds.to_s).to_f - location:
app/models/account_authorization_config.rb:382
- default:
'http://www.canvaslms.com/policies/terms-of-use' - usage:
Setting.get('terms_of_use_url', 'http://www.canvaslms.com/policies/terms-of-use') - location:
app/models/account.rb:285
- default:
'http://www.canvaslms.com/policies/privacy-policy' - usage:
Setting.get('privacy_policy_url', 'http://www.canvaslms.com/policies/privacy-policy') - location:
app/models/account.rb:289
- default:
'true' - usage:
Setting.get('terms_required', 'true') == 'true' - location:
app/models/account.rb:293
- default:
500.megabytes.to_s - usage:
Setting.get('account_default_quota', 500.megabytes.to_s).to_i - location:
app/models/account.rb:495
- default:
500.megabytes.to_s - usage:
Setting.get('account_default_quota', 500.megabytes.to_s).to_i - location:
app/models/account.rb:502
- default:
nil - usage:
special_account_id = @special_account_ids[special_account_type] ||= Setting.get("#{special_account_type}_account_id", nil) - location:
app/models/account.rb:937
- default:
nil - usage:
special_account_id = Setting.get("#{special_account_type}_account_id", nil) - location:
app/models/account.rb:942
- default:
"150" - usage:
qs_threshold = Setting.get("too_many_quiz_submission_versions", "150").to_i - location:
app/models/assignment.rb:1352
- default:
10.to_s - usage:
delay = Setting.get('attachment_build_media_object_delay_seconds', 10.to_s).to_i - location:
app/models/attachment.rb:296
- default:
'512' - usage:
Setting.get('attachment_minimum_size_for_quota', '512').to_i - location:
app/models/attachment.rb:675
- default:
50.megabytes.to_s - usage:
quota = Setting.get('context_default_quota', 50.megabytes.to_s).to_i - location:
app/models/attachment.rb:684
- default:
"5" - usage:
quiet_period = Setting.get("attachment_notify_quiet_period_minutes", "5").to_i.minutes.ago - location:
app/models/attachment.rb:874
- default:
"120" - usage:
discard_older_than = Setting.get("attachment_notify_discard_older_than_hours", "120").to_i.hours.ago - location:
app/models/attachment.rb:877
- default:
"false" - usage:
Setting.get("filter_scribd_submits", "false") == "true" - location:
app/models/attachment.rb:1209
- default:
'5' - usage:
if attempt <= Setting.get('max_canvadocs_attempts', '5').to_i - location:
app/models/attachment.rb:1436
- default:
'5' - usage:
if attempt <= Setting.get('max_crocodoc_attempts', '5').to_i - location:
app/models/attachment.rb:1456
- default:
120 - usage:
cutoff = Setting.get('scribd.stale_threshold', 120).to_f.days.ago - location:
app/models/attachment.rb:1666
- default:
"").split("," - usage:
DYNAMIC_THUMBNAIL_SIZES + Setting.get("attachment_thumbnail_sizes", "").split(",") - location:
app/models/attachment.rb:1702
- default:
30.minutes - usage:
Setting.get('content_participation_count_ttl', 30.minutes).to_i - location:
app/models/content_participation_count.rb:124
- default:
'0' - usage:
if Setting.get('populate_conversation_participants_private_hash_complete', '0') == '0' - location:
app/models/conversation.rb:91
- default:
'45' - usage:
bs = Setting.get('crocodoc_status_check_batch_size', '45').to_i - location:
app/models/crocodoc_document.rb:129
- default:
500.megabytes.to_s - usage:
Setting.get('course_default_quota', 500.megabytes.to_s).to_i - location:
app/models/course.rb:1001
- default:
nil) - usage:
if (key_id = Setting.get("#{default_key_name}_developer_key_id", nil)) && key_id.present? - location:
app/models/developer_key.rb:63
- default:
'50' - usage:
Setting.get('discussion_entry_max_depth', '50').to_i - location:
app/models/discussion_entry.rb:109
- default:
600).to_i.seconds - usage:
Rails.cache.fetch(['recompute_final_scores', course.id, user].cache_key, :expires_in => Setting.get('recompute_grades_window', 600).to_i.seconds) do - location:
app/models/enrollment.rb:784
- default:
2.minutes - usage:
Setting.get('enrollment_last_activity_at_threshold', 2.minutes).to_i - location:
app/models/enrollment.rb:1020
- default:
10.minutes - usage:
Setting.get('enrollment_total_activity_time_threshold', 10.minutes).to_i - location:
app/models/enrollment.rb:1024
- default:
50.megabytes.to_s - usage:
Setting.get('group_default_quota', 50.megabytes.to_s).to_i - location:
app/models/group.rb:531
- default:
'200' - usage:
[num, Setting.get('max_groups_in_new_category', '200').to_i].min : - location:
app/models/group_category.rb:371
- default:
30.minutes.to_s - usage:
timeout = Setting.get('media_bulk_upload_timeout', 30.minutes.to_s).to_i - location:
app/models/kaltura_media_file_handler.rb:71
- default:
'5' - usage:
if attempt < Setting.get('media_object_bulk_refresh_max_attempts', '5').to_i - location:
app/models/media_object.rb:145
- default:
'30' - usage:
wait_period = Setting.get('media_object_bulk_refresh_wait_period', '30').to_i - location:
app/models/media_object.rb:146
- default:
'false' - usage:
enable_page_views = Setting.get('enable_page_views', 'false') - location:
app/models/page_view.rb:109
- default:
52.weeks - usage:
scrollback_limit -> { Setting.get('page_views_scrollback_limit:users', 52.weeks) } - location:
app/models/page_view.rb:144
- default:
'false' - usage:
Setting.get('skip_pageview_updates', 'false') != 'true' - location:
app/models/page_view.rb:189
- default:
'false' - usage:
return unless Setting.get('page_views_store_active_user_counts', 'false') == 'redis' && Canvas.redis_enabled? - location:
app/models/page_view.rb:304
- default:
1.day.to_s - usage:
exptime = Setting.get('page_views_active_user_exptime', 1.day.to_s).to_i - location:
app/models/page_view.rb:306
- default:
DefaultMaxQuestions).to_i - usage:
Setting.get('quiz_statistics_max_questions', DefaultMaxQuestions).to_i) || - location:
app/models/quizzes/quiz_statistics.rb:50
- default:
DefaultMaxSubmissions).to_i - usage:
Setting.get('quiz_statistics_max_submissions', DefaultMaxSubmissions).to_i) - location:
app/models/quizzes/quiz_statistics.rb:52
- default:
"opt_out" - usage:
collection_type = Setting.get("usage_statistics_collection", "opt_out") - location:
app/models/report_snapshot.rb:85
- default:
"" - usage:
installation_uuid = Setting.get("installation_uuid", "") - location:
app/models/report_snapshot.rb:88
- default:
'0' - usage:
process_delay = Setting.get('sis_batch_process_start_delay', '0').to_f - location:
app/models/sis_batch.rb:97
- default:
'1000' - usage:
Setting.get('sis_batch_max_messages', '1000').to_i - location:
app/models/sis_batch.rb:259
- default:
4.weeks - usage:
ttl = Setting.get('stream_items_ttl', 4.weeks).to_i.ago - location:
app/models/stream_item.rb:318
- default:
60.to_s - usage:
delay = Setting.get('turnitin_submission_delay_seconds', 60.to_s).to_i - location:
app/models/submission.rb:336
- default:
500 - usage:
Setting.get('max_messages_per_day_per_user', 500).to_i - location:
app/models/user.rb:1104
- default:
100) - usage:
limit(Setting.get('recent_stream_item_limit', 100)) - location:
app/models/user.rb:1801
- default:
5 - usage:
return if users.length < Setting.get("min_users_for_conversation_context_codes_preload", 5).to_i - location:
app/models/user.rb:1969
- default:
50.megabytes.to_s - usage:
Setting.get('user_default_quota', 50.megabytes.to_s).to_i - location:
app/models/user.rb:2073
- default:
nil - usage:
<% if ips = Setting.get('account_authorization_config_ip_addresses', nil).presence %> - location:
app/views/account_authorization_configs/index.html.erb:40
- default:
"false" - usage:
<% if @account.root_account? && [email protected]_admin? && Setting.get("show_feedback_link", "false") == "true" %> - location:
app/views/accounts/settings.html.erb:366
- default:
'50') - usage:
js_env :SYLLABUS_PER_PAGE => Setting.get('syllabus_per_page', Setting.get('api_max_per_page', '50')) - location:
app/views/assignments/syllabus.html.erb:7
- default:
"false" - usage:
<% if Setting.get("show_feedback_link", "false") == "true" %> - location:
app/views/communication_channels/confirm_failed.html.erb:16
- default:
600 - usage:
:slow_threshold => Setting.get('jobs.slow_threshold', 600).to_f, - location:
app/views/jobs/index.html.erb:162
- default:
3600 - usage:
:super_slow_threshold => Setting.get('jobs.super_slow_threshold', 3600).to_f - location:
app/views/jobs/index.html.erb:163
- default:
"false" - usage:
<% if Setting.get("show_opensource_linkback", "false") == "true" %> - location:
app/views/layouts/application.html.erb:182
- default:
"/register_from_website" - usage:
<%= link_to t("register_for_canvas", "*Need a Canvas Account?* **Click Here, It's Free!**", :wrapper => {'*' => '<i>\1</i>', '**' => '<b>\1</b>'}), Setting.get("registration_link", "/register_from_website"), :id => 'register_link', :class => 'not_external register_banner' %> - location:
app/views/shared/_login.html.erb:33
- default:
"false" - usage:
<% if Setting.get("show_feedback_link", "false") == "true" %> - location:
app/views/shared/unauthorized.html.erb:47
- default:
SecureRandom.hex(64)) rescue SecureRandom.hex(64) - usage:
:secret => (Setting.get_or_set("session_secret_key", SecureRandom.hex(64)) rescue SecureRandom.hex(64)) - location:
config/initializers/session_store.rb:10
- default:
3.months.to_s - usage:
cutoff = Setting.get('error_reports_retain_for', 3.months.to_s).to_i - location:
config/periodic_jobs.rb:82
- default:
'true' - usage:
if Setting.get('respondus_endpoint.polling_api', 'true') != 'false' - location:
gems/plugins/respondus_soap_endpoint/lib/respondus_soap_endpoint/urn:RespondusAPIServant.rb:558
- default:
'2').to_f - usage:
sleep(Setting.get('respondus_endpoint.polling_time', '2').to_f) - location:
gems/plugins/respondus_soap_endpoint/lib/respondus_soap_endpoint/urn:RespondusAPIServant.rb:567
- default:
'50' - usage:
if includes.include?('items') && count <= Setting.get('api_max_per_page', '50').to_i - location:
lib/api/v1/context_module.rb:44
- default:
'50' - usage:
Setting.get('api_max_per_page', '50').to_i - location:
lib/api.rb:227
- default:
'10' - usage:
per_page = controller.params[:per_page] || options[:default] || Setting.get('api_per_page', '10') - location:
lib/api.rb:231
- default:
10.minutes.to_s).to_i, code_data.to_json - usage:
Canvas.redis.setex("#{REDIS_PREFIX}#{code}", Setting.get('oath_token_request_timeout', 10.minutes.to_s).to_i, code_data.to_json) - location:
lib/canvas/oauth/token.rb:95
- default:
'true' - usage:
Setting.get('ignore_redis_failures', 'true') == 'true' - location:
lib/canvas/redis.rb:29
- default:
'300').to_i rescue 300 - usage:
return (Time.now - last_redis_failure[redis_name]) < (Setting.get('redis_failure_time', '300').to_i rescue 300) - location:
lib/canvas/redis.rb:35
- default:
"true" - usage:
if Setting.get("request_throttle.enabled", "true") == "true" - location:
lib/canvas/request_throttle.rb:88
- default:
default - usage:
Setting.get("request_throttle.#{setting}", default).to_f - location:
lib/canvas/request_throttle.rb:215
- default:
nil - usage:
db_hash = Setting.get('encryption_key_hash', nil) rescue return # in places like rake db:test:reset, we don't care that the db/table doesn't exist - location:
lib/canvas/security.rb:67
- default:
'20' - usage:
total_allowed = Setting.get('login_attempts_total', '20').to_i - location:
lib/canvas/security.rb:95
- default:
'10' - usage:
ip_allowed = Setting.get('login_attempts_per_ip', '10').to_i - location:
lib/canvas/security.rb:96
- default:
5.minutes.to_s - usage:
exptime = Setting.get('login_attempts_ttl', 5.minutes.to_s).to_i - location:
lib/canvas/security.rb:112
- default:
15.seconds.to_s) - usage:
timeout = (Setting.get("service_#{service_name}_timeout", nil) || options[:fallback_timeout_length] || Setting.get("service_generic_timeout", 15.seconds.to_s)).to_f - location:
lib/canvas.rb:159
- default:
3.to_s) - usage:
cutoff = (Setting.get("service_#{service_name}_cutoff", nil) || Setting.get("service_generic_cutoff", 3.to_s)).to_i - location:
lib/canvas.rb:163
- default:
1.minute.to_s) - usage:
error_ttl = (Setting.get("service_#{service_name}_error_ttl", nil) || Setting.get("service_generic_error_ttl", 1.minute.to_s)).to_i - location:
lib/canvas.rb:164
- default:
nil).presence - usage:
:media_object_flavor => Setting.get('exporter_media_object_flavor', nil).presence) - location:
lib/cc/qti/qti_manifest.rb:34
- default:
nil).presence - usage:
:media_object_flavor => Setting.get('exporter_media_object_flavor', nil).presence) - location:
lib/cc/resource.rb:48
- default:
'1000' - usage:
Setting.get('filter_page_view_url_params_batch_size', '1000').to_i - location:
lib/data_fixup/filter_page_view_url_params.rb:41
- default:
1000 - usage:
@batch_size ||= Setting.get('fix_audit_log_uuid_indexes_batch_size', 1000).to_i - location:
lib/data_fixup/fix_audit_log_uuid_indexes.rb:47
- default:
'03/08/2013'), '%m/%d/%Y' - usage:
date = Date.strptime(Setting.get('media_recording_type_bad_date', '03/08/2013'), '%m/%d/%Y') - location:
lib/data_fixup/fix_media_recording_submission_types.rb:4
- default:
"true" - usage:
if Setting.get("support_multiple_account_types", "true") == "true" - location:
lib/external_statuses.rb:28
- default:
30.days.to_s - usage:
timespan = Setting.get('recently_logged_in_timespan', 30.days.to_s).to_i.seconds - location:
lib/reporting/counts_report.rb:68
- default:
2.seconds - usage:
update_interval = Setting.get('sis_batch_progress_interval', 2.seconds).to_i - location:
lib/sis/csv/import.rb:239
- default:
100) - usage:
@pause_every = (@batch.data[:pause_every] || Setting.get('sis_batch_pause_every', 100)).to_i - location:
lib/sis/csv/import.rb:321
- default:
0) - usage:
@pause_duration = (@batch.data[:pause_duration] || Setting.get('sis_batch_pause_duration', 0)).to_f - location:
lib/sis/csv/import.rb:322
- default:
'1' - usage:
transaction_timeout = Setting.get('sis_transaction_seconds', '1').to_i.seconds - location:
lib/sis/enrollment_importer.rb:105
- default:
'1' - usage:
transaction_timeout = Setting.get('sis_transaction_seconds', '1').to_i.seconds - location:
lib/sis/user_importer.rb:82
- default:
'500').to_i, false - usage:
dm_id_batches.in_groups_of(Setting.get('summary_message_consolidator_batch_size', '500').to_i, false) do |batches| - location:
lib/summary_message_consolidator.rb:36
- default:
'100000' - usage:
max = Setting.get('max_zip_file_count', '100000').to_i - location:
lib/unzip_attachment.rb:265
- default:
'true' - usage:
Setting.get('user_search_with_gist', 'true') == 'true' - location:
lib/user_search.rb:91
- default:
'true' - usage:
Setting.get('user_search_with_full_complexity', 'true') == 'true' - location:
lib/user_search.rb:95
- default:
'2') } - usage:
{ :controller => "page_views", :action => "index", :user_id => @student.to_param, :format => 'json', :page => page, :per_page => Setting.get('api_max_per_page', '2') }) - location:
spec/apis/v1/users_api_spec.rb:291
- default:
'100000' - usage:
current_setting = Setting.get('max_zip_file_count', '100000') - location:
spec/lib/unzip_attachment_spec.rb:138
- default:
nil - usage:
key_id = Setting.get('rspec_developer_key_id', nil) - location:
spec/models/developer_key_spec.rb:40
- default:
0 - usage:
Setting.get('crocodoc_counter', 0).to_i.should eql 998 - location:
spec/models/user_spec.rb:2228
- default:
nil - usage:
user_id = Setting.get("academic_benchmark_migration_user_id", nil) - location:
vendor/plugins/academic_benchmark/lib/academic_benchmark.rb:18
- default:
nil - usage:
num_strands = Setting.get("#{full_strand_name}_num_strands", nil) - location:
vendor/plugins/delayed_job/lib/delayed/backend/base.rb:61
- default:
nil - usage:
num_strands ||= Setting.get("#{strand_name}_num_strands", nil) - location:
vendor/plugins/delayed_job/lib/delayed/backend/base.rb:66
- default:
'5' - usage:
self.batch_size ||= Setting.get('jobs_get_next_batch_size', '5').to_i - location:
vendor/plugins/delayed_job/lib/delayed/backend/active_record.rb:207
- default:
'false' - usage:
self.select_random = Setting.get('jobs_select_random', 'false') == 'true' - location:
vendor/plugins/delayed_job/lib/delayed/backend/active_record.rb:209
- default:
1.month.to_s - usage:
ttl = Setting.get('delayed_jobs_stats_ttl', 1.month.to_s).to_i.from_now - location:
vendor/plugins/delayed_job/lib/delayed/stats.rb:29
- default:
'false' - usage:
Setting.get('delayed_jobs_store_stats', 'false') == 'redis' - location:
vendor/plugins/delayed_job/lib/delayed/stats.rb:36
- default:
'5.0' - usage:
@sleep_delay ||= Setting.get('delayed_jobs_sleep_delay', '5.0').to_f - location:
vendor/plugins/delayed_job/lib/delayed/worker.rb:105
- default:
'2.5' - usage:
@sleep_delay_stagger ||= Setting.get('delayed_jobs_sleep_delay_stagger', '2.5').to_f - location:
vendor/plugins/delayed_job/lib/delayed/worker.rb:106
- default:
'true' - usage:
@make_tmpdir ||= Setting.get('delayed_jobs_unique_tmpdir', 'true') == 'true' - location:
vendor/plugins/delayed_job/lib/delayed/worker.rb:107
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