Cybros Core

This is a barebone Rails 6.0 app to show some basic configurations.

I'm used to maintaining a barebone app that helps me build new project quickly, and this is extracted from my side project initially for sharing my ideas to friends, but if this is valuable to you, use it freely.

Goal

I hope this could be a template for new apps, it should be production-ready, so I'll keep polishing the codebase, follow best practice, keep dependencies up to date.

I don't wanna add too much features especially business-specific, but I'd like to perfection User system (based on Devise) because most apps need this, and keep improving UI/UX relates works.

BTW: I'm really hoping someone could extract GitLab's user system.

I list some helps wanted, see below.

Features

Classic front-end

Personally, I'm not skilled at front-end and I still prefer classic Rails server-side rendering, and partially introduce React or Vue for complex pages.

A good example is Gitlab, I also cheat some useful helpers to this app.

Webpacker 5 without Sprockets

Webpacker can do all the jobs that Sprockets does, and has full support of front-end community, So I remove Sprockets and tune Webpacker allows Assets Pipeline experience.

I do these:

• Remove gems related to Sprockets
• Search and remove assets related configs
• resolved_paths: ['app/assets'] in config/webpacker.yml
• app/javascript/packs/application.js require all static assets (images, webfonts, etc.)

CoreUI with Bootstrap, FontAwesome

See app/assets/stylesheets/application.scss

Application configuration

A hack about Rails Credentials

Rails Credentials is a useful feature to store security-sensitive configs.

But we can't bundle master.key, and credentials.yml.enc isn't readable, so it's difficult to redistribute the app, I gave a PR to Rails but no respond, I consistantly think it's useful so I integrate it as a hack, see bin/rails.

So you can copy config/credentials.yml.example as config/credentials.yml, edit it, then run rails credentials:encrypt that will generate config/credentials.yml.enc and config/master.key for you.

A hack about ActionMailer configuration

Unlike database.yml, ActionMailer's config separates in many files, I do a hack that you can config ActionMailer in one place.

See config/mailer.yml

Codes in config/application.rb

Implemented a full-feature layouts & views

I don't have art skill but ... at least it works!

Overrides Form Helpers to enhance them to support Bootstrap form validation style

The technique is in https://guides.rubyonrails.org/engines.html#implementing-decorator-pattern-using-class-class-eval

See app/overrides/action_view/helpers/form_builder_override.rb

In addition, see config/application.rb for how to require overrides.

Don't render ActionView's default error field wrapper

That will break many CSS frameworks.

See config/initializers/action_view.rb

Default value for model fields

See app/models/concerns/acts_as_default_value.rb

Default value of column can only be a static value, Active Record's attribute DSL can set default for field but doesn't have entity context, Using hooks (such as after_initilize) to set default values has edge cases, you can use default_value_for to set default value.

Here's a complex example:

default_value_for :role_id,
                    -> (member) {
                      if member.has_attribute?(:tenant_id) || member.tenant
                        member&.tenant&.member_role&.id
                      end
                    }, allow_nil: false

I18n for enum

See app/models/concerns/enum_attribute_localizable.rb

Rails doesn't have best practice for enum I18n, I integrate my personal practice.

For example, I have a model Post with status column for enum

class Post < ApplicationRecord
  enum status: %i[draft published archived]
end

The locale post.en.yml looks like

en:
  activerecord:
    models:
      post: Post
    attributes:
      post:
        status: Status
        statuses:
          draft: Draft
          published: Published
          archived: Archived

To render human readable post's status, you can do like this:

Post.human_enum_value(:status, @post)

Undocumented yet

TODO:

Run the app

• Clone it
• bundle
• yarn
• cp config/database.yml.example config/database.yml
• cp config/credentials.yml.example config/credentials.yml & rails credentials:encrypt
• cp config/mailer.yml.example config/mailer.yml
• rails db:migrate
• rails s

Receive Devise confirmation mail

In development, I use mailcatcher to receive mails, run gem install mailcatcher to install it.

Open a new terminal, run mailcatcher, then follow the instructions

Set user as admin

• cp config/settings.yml config/settings.local.yml
• Put your email into admin.emails
• In user menu (right-top of pages), you should see Administration

Troubleshooting

Make sure run gem update --system to use latest Rubygem

Help wanted

• UI/UX design & SCSS & HTML improvement
• Layout for mails
• Coding style & structural improvement
• Try support uploading user avatar using ActiveStorage
• Find bugs
• Docker for deployment, including stages to compiling assets & copy ymls, easy to migrate to k8s

Screenshots

License

MIT License.