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Daniel Colson f976dec24b
Add note to avoid requiring config/initializers 
[ci skip]

Closes #40021

I began this commit by adding an additional note about explicitly
requiring initializers. `config/intializers` are loaded with `load`
rather than `require` (and always have been, since they were introduced
way back in c6d6082562). So explicitly requiring them can be problematic
if they are not idempotent.

But @p8 pointed out that it is a bit awkward to have 3 notes and one tip
larger than the actual text in this section.

This commit now also reworks 2 of the notes and the tip into additional
paragraphs in the main text. The benefits of the new version I see:

- We now explicitly say that the initializers are loaded by sort order
- We now start with the ideal way to deal with dependent initializers,
  then follow with a couple warnings. We used to lead with what not to
  do, which I think was a bit confusing.
- The language around subdirectories is much simpler (mentioning that
  subdirectories can be used for organizing seemed unnecessary to me -
  that is true of subdirectories in general, and doesn't have any
  specific connection to initializers)

This commit does not change the opening paragraph or the note about when
to use `after_initialize` instead, although it does reformat them.
2020-08-25 20:25:46 -04:00
..
kindle
2_2_release_notes.md Use bash code fences and prompts for shell code [ci skip] 2020-06-13 19:27:30 -05:00
2_3_release_notes.md Use bash code fences and prompts for shell code [ci skip] 2020-06-13 19:27:30 -05:00
3_0_release_notes.md Update the Rails mailing list URLs to new discuss discourse URL [ci skip] 2020-04-02 22:00:28 +05:30
3_1_release_notes.md
3_2_release_notes.md Use appropriate code fences [ci skip] 2020-07-08 14:51:57 -05:00
4_0_release_notes.md Use bash code fences and prompts for shell code [ci skip] 2020-06-13 19:27:30 -05:00
4_1_release_notes.md Use bash code fences and prompts for shell code [ci skip] 2020-06-13 19:27:30 -05:00
4_2_release_notes.md [ci skip] Update link to autoloading guide to classic mode guide instead of Zeitwerk guide 2020-06-10 10:43:05 -05:00
5_0_release_notes.md [ci skip] switch eg. to proper e.g. 2019-10-07 02:18:36 +02:00
5_1_release_notes.md update from PR #36222 2020-02-12 13:31:43 -05:00
5_2_release_notes.md fix a typo in 5_2_release_notes.md 2019-07-24 18:23:15 +03:00
6_0_release_notes.md Merge pull request #36823 from abhaynikam/add-multiple-database-guide-entry-to-release-notes 2019-08-05 08:42:15 -04:00
6_1_release_notes.md Revert "Remove deprecated ActionMailer::DeliveryJob and ActionMailer::Parameterized::DeliveryJob" 2020-05-12 15:20:07 -04:00
_license.html.erb
_welcome.html.erb Fix Rails Version in Guides Index 2019-08-18 14:45:11 +02:00
action_cable_overview.md Use headings to make Action Cable terminology more clear [skip ci] 2020-08-17 22:41:32 +02:00
action_controller_overview.md Merge pull request #39736 from mehagar/docs-cookie 2020-07-31 08:52:12 +05:30
action_mailbox_basics.md Use appropriate code fences [ci skip] 2020-07-08 14:51:57 -05:00
action_mailer_basics.md Pass over the "Calling the Mailer" AM guide [ci skip] (#39402) 2020-05-23 23:32:45 +05:30
action_text_overview.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
action_view_helpers.md Add label attribute to <option> from include_blank 2020-07-24 15:45:18 -05:00
action_view_overview.md Move Actionview Helpers guides to seperate guide [skip ci] 2020-06-18 21:26:00 +02:00
active_job_basics.md fix grammar - ci skip 2020-03-28 19:38:01 -07:00
active_model_basics.md Use Rouge for guides code highlighting [ci skip] 2020-07-08 09:05:08 +02:00
active_record_basics.md Update Migration number to ensure consistency on the documentation [ci skip] 2020-01-25 15:12:33 -05:00
active_record_callbacks.md Add #delete_by into skipping callback methods [skip ci] 2020-08-24 00:26:58 +09:00
active_record_migrations.md Combine and deprecate rails db:structure:{dump,load} tasks into rails db:schema:{dump,load} 2020-08-03 19:08:41 +03:00
active_record_multiple_databases.md Combine and deprecate rails db:structure:{dump,load} tasks into rails db:schema:{dump,load} 2020-08-03 19:08:41 +03:00
active_record_postgresql.md Remove the unnessecary default: 'gen_random_uuid()' (#40012) 2020-08-08 15:11:34 +05:30
active_record_querying.md Whitespaces ✂️ 2020-08-25 23:52:12 +00:00
active_record_validations.md improve active record validation docs 2020-08-03 12:18:47 +02:00
active_storage_overview.md Fix spelling of DigitalOcean in docs 2020-08-14 14:11:47 -04:00
active_support_core_extensions.md fix typos in active support docs 2020-07-17 11:25:35 -05:00
active_support_instrumentation.md Document how exceptions are handled in instrumentation 2020-07-18 18:00:35 +02:00
api_app.md Update GitHub gist api link and fix documentation in api_app page [ci skip] 2020-08-06 21:47:45 +05:30
api_documentation_guidelines.md Use bash code fences and prompts for shell code [ci skip] 2020-06-13 19:27:30 -05:00
asset_pipeline.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
association_basics.md Added docs for habtm association about the declaring model referring to zero or more associations 2020-08-12 23:01:00 +05:30
autoloading_and_reloading_constants.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
autoloading_and_reloading_constants_classic_mode.md consistent syntax for items in list 2020-08-22 12:20:43 -04:00
caching_with_rails.md Fix syntax error [ci skip] 2020-02-05 16:04:59 +09:00
command_line.md Merge branch 'master' into combine-structure-and-schema-tasks 2020-08-17 08:47:51 -04:00
configuring.md Add note to avoid requiring config/initializers 2020-08-25 20:25:46 -04:00
contributing_to_ruby_on_rails.md Link to Action Mailbox's new bug report template [ci skip] 2020-07-15 19:13:09 -04:00
debugging_rails_applications.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
development_dependencies_install.md Fix highlighting for mostly SQL block 2020-07-26 18:27:07 +02:00
documents.yaml change typo 6.0 to 6.1 in the documents.yml (#39664) [ci skip] 2020-06-19 06:19:29 +05:30
engines.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
form_helpers.md Unify coverage of collection helpers [ci skip] 2020-06-04 01:13:04 -05:00
generators.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
getting_started.md More consistent usage of version option for commands in guides [skip ci] 2020-07-09 12:42:28 +02:00
i18n.md fix minor typos 2020-07-22 08:01:10 -05:00
index.html.erb
initialization.md update global rails commands to bundled rails i.e. bin/rails 2020-04-11 17:32:26 +01:00
layout.html.erb Merge pull request #39777 from p8/guides/rouge-highlighting 2020-07-08 13:59:30 +01:00
layouts_and_rendering.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
maintenance_policy.md Clarify subheadline of maintenance policy 2020-05-20 00:02:04 +02:00
plugins.md fix markdown syntax error 2020-08-14 14:01:55 -05:00
rails_application_templates.md Use bash code fences and prompts for shell code [ci skip] 2020-06-13 19:27:30 -05:00
rails_on_rack.md [ci skip] Add ActionDispatch::ActionableExceptions to default middleware docs 2020-05-20 13:55:13 -04:00
routing.md [ci skip] Append some description about advance constraints in block form. 2020-07-29 17:19:09 +08:00
ruby_on_rails_guides_guidelines.md Remove references to WARNINGS environment variable [ci skip] 2020-07-05 16:40:52 +01:00
security.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
testing.md epsilon invert 2020-08-14 17:06:21 -05:00
threading_and_code_execution.md Fix minor formatting issue 2020-08-21 05:28:38 +05:30
upgrading_ruby_on_rails.md Formats code blocks for better syntax highlighting 2020-08-21 15:47:32 +05:30
working_with_javascript_in_rails.md Avoid implying that #results selector will only match a div element 2020-02-21 10:10:34 -08:00