Subs have many subs line items

We are going to support multiple items per subscription. This commit
changes the subscription -> subscription_line_item relationship from a
has_one to a has_many.

Most of the changes here are simply pluralization changes. Somethat are
not:

Api params now take:
`line_items_attributes instead` of `line_item_attributes` for nested params
to a subscription

`subscription_line_items_attributes` instead of
`subscription_line_item_attributes`

Only the interval of the first subscription_line_item is considered

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/solidus_subscriptions/permitted_attributes.rb b/lib/solidus_subscriptions/permitted_attributes.rb
index ce8ad75..2f50414 100644
--- a/lib/solidus_subscriptions/permitted_attributes.rb
+++ b/lib/solidus_subscriptions/permitted_attributes.rb
@@ -17,12 +17,12 @@ module SolidusSubscriptions
       end
 
       def subscription_line_item_attributes
-        Config.subscription_line_item_attributes
+        [Config.subscription_line_item_attributes]
       end
 
       def subscription_attributes
         Config.subscription_attributes | [
-          { line_item_attributes: nested(subscription_line_item_attributes) - [:subscribable_id] }
+          { line_items_attributes: nested(subscription_line_item_attributes) - [:subscribable_id] }
         ]
       end