Template generator

lib/generators/capistrano/maintenance/README.md

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+To create a local maintenance.html.erb template in a default path "config/deploy/templates" type this in your shell:
+
+bundle exec rails generate capistrano:maintenance:template
+
+To override the default path:
+
+bundle exec rails generate capistrano:maintenance:template "config/templates"
+
+Add the template path to deploy.rb:
+
+set :maintenance_template_path, 'config/deploy/templates/maintenance.html.erb' # or your custom path

lib/generators/capistrano/maintenance/template_generator.rb

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+module Capistrano
+  module Maintenance
+    module Generators
+      class TemplateGenerator < Rails::Generators::Base
+
+        desc "Create a local maintenance.html.erb template file for customization"
+        source_root File.expand_path('../../../../capistrano/templates', __FILE__)
+        argument :templates_path, type: :string,
+          default: "config/deploy/templates",
+          banner: "path to templates"
+
+        def copy_template
+          copy_file "maintenance.html.erb", "#{templates_path}/maintenance.html.erb"
+        end
+
+      end
+    end
+  end
+end