This guide covers upgrading a 0.70.x Spree store, to a 1.0.x store. This guide has been written from the perspective of a blank Spree 0.70.x store with no extensions.

If you have extensions that your store depends on, you will need to manually verify that each of those extensions work within your 1.0.x store once this upgrade is complete. Typically, extensions that are compatible with this version of Spree will have a 1-0-stable branch.

Worth noting here is that Spree 1.0 was the first release to properly use the features of Rails engines. This means that Spree needs to be mounted manually within the config/routes.rb file of the application, and that the classes such as Product and Variant from Spree are now namespaced within a module, so that they are now Spree::Product and Spree::Variant. Tables are similarly namespaced (i.e. spree_products and spree_variants).

Along with this, migrations must be copied over to the application using the rake railties:install:migrations command, rather than a rails g spree:site command as before.

Upgrade Rails

Spree 1.0 depends on any Rails 3.1 release afer Rails 3.1.10. Ensure that you have that dependency specified in your Gemfile:

gem 'rails', '~> 3.1.10'

## Upgrade Spree

For best results, use the 1-0-stable branch from GitHub:

gem 'spree', :github => 'spree/spree', :branch => '1-0-stable'```

Run `bundle update spree`. 

## Rename middleware classes

In `config/application.rb`, there are two pieces of middleware:

~~~ ruby
config.middleware.use "RedirectLegacyProductUrl"
config.middleware.use "SeoAssist"

These classes are now namespaced within Spree:

config.middleware.use "Spree::Core::Middleware::RedirectLegacyProductUrl"
config.middleware.use "Spree::Core::Middleware::SeoAssist"

Copy and run migrations

Copy over the migrations from Spree (and any other engine) and run them using these commands:

rake railties:install:migrations
rake db:migrate

Mount the Spree engine

Within config/routes.rb, you must now mount the Spree engine:

mount Spree::Core::Engine, :at => '/'

This is the standard way of adding engines to Rails applications.

Remove spree_dash assets

Spree’s dash component was removed as a dependency of Spree, and so references to its assets must be removed also. Remove references to spree_dash from:

  • app/assets/stylesheets/store/all.css
  • app/assets/javascripts/store/all.js
  • app/assets/stylesheets/admin/all.css
  • app/assets/javascripts/admin/all.js

Verify that everything is OK

Click around in your store and make sure it’s performing as normal. Fix any deprecation warnings you see.