Wallaby::View

Wallaby::View extends Rails template/partial inheritance chain to be able to:

organize partials in #{controller_path}/#{action} fashion on top of Rails' controller fashion by extending Rails' _prefixes.
configure the theme (a set of layout/templates/partials starting with the theme prefix).

Install

Add Wallaby::View to Gemfile.

gem 'wallaby-view'

And re-bundle.

bundle install

Include Wallaby::View in the controller (e.g. ApplicationController):

# app/controllers/application_controller
class ApplicationController < ActionController::Base
  include Wallaby::View
end

What It Does

For example, given the following controllers:

# app/controllers/application_controller
class ApplicationController < ActionController::Base
  include Wallaby::View
end

# app/controllers/admin/application_controller
class Admin::ApplicationController < ::ApplicationController
  self.theme_name = 'secure'
end

# app/controllers/admin/users_controller
class Admin::UsersController < Admin::ApplicationController
  self.theme_name = 'account'
  self.prefix_options = { edit: 'form' }
end

By using Wallaby::View, a template/partial for the admin/application#edit action will be looked up in the following folder order from top to bottom:

app/views/admin/application/edit
app/views/admin/application
app/views/secure/edit
app/views/secure
app/views/application/edit
app/views/application

Then it depends on how a relative partial should be shared, the partial can be created in one of the above folders. For example, if a form partial is designed specifically for admin/application#edit action, then it can be created in admin/application/edit folder as below:

<%# app/views/admin/application/edit/_form.html.erb %>
a form for `admin/application#edit`

Then in the admin/application#edit template, rendering the relative form partial will result in using the above partial.

<%# app/views/admin/application/edit.html.erb %>
<% render 'form' %>

For admin/users#edit action, since prefix_options option is set, edit will be mapped to form, and form will be added to the prefixes as well. Therefore, the lookup folder order of admin/users#edit becomes:

app/views/admin/users/edit
app/views/admin/users/form
app/views/admin/users
app/views/secure/edit
app/views/secure/form
app/views/secure
app/views/admin/application/edit
app/views/admin/application/form
app/views/admin/application
app/views/secure/edit
app/views/secure/form
app/views/secure
app/views/application/edit
app/views/application/form
app/views/application

Advanced Usage

It is possible to override the _prefixes method to make more changes to the prefixes before suffixing them with the action name:

class ApplicationController < ActionController::Base
  include Wallaby::View

  def _prefixes
    super do |prefixes|
      prefixes << 'last_resort'
    end
  end
end

Then the lookup folder order of e.g. application#edit becomes:

app/views/application/edit
app/views/application
app/views/last_resort/edit
app/views/last_resort

Documentation

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License

This project uses MIT License.