Change interval enum units to singular

This makes it easier for people on the frontend to pluralize, instead of
conditionally singularizing. Since this is an enum, this change makes
virtually no difference to us.

7 files changed, 12 insertions, 12 deletions

diff --git a/README.md b/README.md
index 6c6af04..aca0f12 100644
--- a/README.md
+++ b/README.md
@@ -45,8 +45,8 @@ To subscribe to a variant include the following parameters when posting to
       quantity: 2,              // number of units in each subscription order.
       subscribable_id: 1234,    // Which variant the subscription is for.
       interval_length: 1,       // The time between subscription activations.
-      interval_units: "months", // A plural qualifier for length.
-                                // Can be one of "days", "weeks", "months", or "years".
+      interval_units: "month", // A plural qualifier for length.
+                                // Can be one of "day", "week", "month", or "year".
       max_installments: 12      // Stop processing after this many subscription orders.
                                 // (use null to process the subscription ad nauseam)
     }
diff --git a/app/models/solidus_subscriptions/line_item.rb b/app/models/solidus_subscriptions/line_item.rb
index f95618f..e912be5 100644
--- a/app/models/solidus_subscriptions/line_item.rb
+++ b/app/models/solidus_subscriptions/line_item.rb
@@ -26,10 +26,10 @@ module SolidusSubscriptions
     )
 
     enum interval_units: [
-      :days,
-      :weeks,
-      :months,
-      :years
+      :day,
+      :week,
+      :month,
+      :year
     ]
 
     validates :spree_line_item, :subscribable_id, presence: :true
diff --git a/docs/api/v1/subscriptions.md b/docs/api/v1/subscriptions.md
index 2532267..78124b5 100644
--- a/docs/api/v1/subscriptions.md
+++ b/docs/api/v1/subscriptions.md
@@ -44,7 +44,7 @@ Make changes to the Subscription object or the subscription line item object
   "line_item_attributes": {
     "quantity": 5,
     "interval_length": 1,
-    "interval_units": "months"
+    "interval_units": "month"
   }
 }
 ```
@@ -69,7 +69,7 @@ HTTP/1.1 200 OK
     "subscribable_id": 2,
     "created_at": "2016-09-26T23:50:32.923Z",
     "updated_at": "2016-09-26T23:51:05.784Z",
-    "interval_units": "months",
+    "interval_units": "month",
     "interval_length": 1
    }
  }
diff --git a/lib/solidus_subscriptions/testing_support/factories/line_item_factory.rb b/lib/solidus_subscriptions/testing_support/factories/line_item_factory.rb
index 6a3304b..b2ae3c4 100644
--- a/lib/solidus_subscriptions/testing_support/factories/line_item_factory.rb
+++ b/lib/solidus_subscriptions/testing_support/factories/line_item_factory.rb
@@ -3,7 +3,7 @@ FactoryGirl.define do
     subscribable_id { create(:variant, subscribable: true).id }
     quantity 1
     interval_length 1
-    interval_units :months
+    interval_units :month
 
     association :spree_line_item, factory: :line_item
 
diff --git a/spec/controllers/orders/create_subscription_line_items_spec.rb b/spec/controllers/orders/create_subscription_line_items_spec.rb
index 53e35b5..4495020 100644
--- a/spec/controllers/orders/create_subscription_line_items_spec.rb
+++ b/spec/controllers/orders/create_subscription_line_items_spec.rb
@@ -32,7 +32,7 @@ RSpec.describe Spree::Controllers::Orders::SubscriptionParams, type: :controller
             max_installments: 3,
             subscribable_id: variant.id,
             interval_length: 30,
-            interval_units: "days"
+            interval_units: "day"
           }
         }
       end
diff --git a/spec/controllers/spree/api/orders_controller_spec.rb b/spec/controllers/spree/api/orders_controller_spec.rb
index 366537e..845d95c 100644
--- a/spec/controllers/spree/api/orders_controller_spec.rb
+++ b/spec/controllers/spree/api/orders_controller_spec.rb
@@ -38,7 +38,7 @@ RSpec.describe Spree::Api::OrdersController, type: :controller do
         quantity: 1,
         subscribable_id: variant.id,
         interval_length: 30,
-        interval_units: "days",
+        interval_units: "day",
         max_installments: 12
       }
     end
diff --git a/spec/controllers/spree/api/users_controller_spec.rb b/spec/controllers/spree/api/users_controller_spec.rb
index 3a43314..73470ed 100644
--- a/spec/controllers/spree/api/users_controller_spec.rb
+++ b/spec/controllers/spree/api/users_controller_spec.rb
@@ -32,7 +32,7 @@ RSpec.describe Spree::Api::UsersController, type: :controller do
         id: subscription.line_item.id,
         quantity: 6,
         interval_length: 1,
-        interval_units: 'months'
+        interval_units: 'month'
       }
     end