SolidusSubscriptions

CircleCI

A Solidus extension to add subscriptions to your store.

Installation

Add solidus_subscriptions to your Gemfile:

gem 'solidus_subscriptions', github: 'solidusio-contrib/solidus_subscriptions'

Bundle your dependencies and run the installation generator:

bundle
bundle exec rails g solidus_subscriptions:install

Configuration

This gem requires a gateway which supports credit cards in order to process subscription orders.

Add this to specify the gateway used by the gem: an initializer.

SolidusSubscriptions::Config.default_gateway { my_gateway }

Guest checkout

Subscriptions require a user to be present to allow them to be managed after they are purchased.

Because of this, you must disable guest checkout for orders which contain subscription_line_items.

An example would be adding this to the registration page:

<%# spree/checkout/registration.html.erb %>
<% if Spree::Config[:allow_guest_checkout] && current_order.subscription_line_items.empty? %>

This allows guests to add subscriptions to their carts as guests, but forces them to login or create an account before purchasing them.

Usage

Purchasing subscriptions

By default, only Spree::Variants can be subscribed to. To subscribe to a variant, it must have the subscribable attribute set to true.

To subscribe to a variant, include the following parameters when posting to /orders/populate:

{
  // other add to cart params
  subscription_line_item: {
    quantity: 2,             // number of units in each subscription order
    subscribable_id: 1234,   // which variant the subscription is for
    interval_length: 1,      // time between subscription activations
    interval_units: "month", // plural qualifier for length (day/week/month/year)
    end_date: '2011/12/13'   // stop processing after this date (use null to process ad nauseam)
  }
}

This will associate a SolidusSubscriptions::LineItem to the line item being added to the cart.

The customer will not be charged for the subscription until it is processed. The subscription line items should be shown to the user on the cart page by looping over Spree::Order#subscription_line_items. SolidusSubscriptions::LineItem#dummy_line_item may be useful to help you display the subscription line item with your existing cart infrastructure.

When the order is finalized, a SolidusSubscriptions::Subscription will be created for each group of subscription line items which can be fulfilled by a single subscription.

Example

An order is finalized and has the following associated subscription line items:

  1. { subscribable_id: 1, interval_length: 1, interval_units: "month" }
  2. { subscribable_id: 2, interval_length: 1, interval_units: "month" }
  3. { subscribable_id: 1, interval_length: 2, interval_units: "month" }

This will generate 2 subscriptions: the first related to subscription line items 1 and 2, and the second related to subscription line item 3.

Processing subscriptions

To process actionable subscriptions simply run:

$ bundle exec rake solidus_subscriptions:process

The task creates ActiveJob jobs which can be fulfilled by your queue library of choice.

We suggest using the Whenever gem to schedule the task.

API documentation

You can find the API documentation here.

Development

Testing the extension

First bundle your dependencies, then run bin/rake. bin/rake will default to building the dummy app if it does not exist, then it will run specs. The dummy app can be regenerated by using bin/rake extension:test_app.

bundle
bin/rake

To run Rubocop static code analysis run

bundle exec rubocop

When testing your application's integration with this extension you may use its factories. Simply add this require statement to your spec_helper:

require 'solidus_subscriptions/factories'

Running the sandbox

To run this extension in a sandboxed Solidus application, you can run bin/sandbox. The path for the sandbox app is ./sandbox and bin/rails will forward any Rails commands to sandbox/bin/rails.

Here's an example:

$ bin/rails server
=> Booting Puma
=> Rails 6.0.2.1 application starting in development
* Listening on tcp://127.0.0.1:3000
Use Ctrl-C to stop

Releasing new versions

Your new extension version can be released using gem-release like this:

bundle exec gem bump -v VERSION --tag --push --remote upstream && gem release

License

Copyright (c) 2016 Stembolt, released under the New BSD License

Originally sponsored by Goby.