There's a race condition here that means the order's address is not always present when the email is first sent, but it *is* present shortly after. The fix in this commit is a temporary solution.
#create_tax_charge! adds tax (adjustments) to all taxable items on an order. If an order order has legacy taxes (lump-sum tax adjustments on the order object), we remove them here before re-applying taxes (using the new setup).
TaxRate#adjust now handles individual items instead of the whole order 🎉 We can use this elsewhere too, for example to re-apply taxes on a single line item, we can do: Spree::TaxRate.adjust(order, [line_item])
The cart service and it's surrounding logic is a bit messy, as it jumps through hoops to add extra logic for the :max_quantity attribute used with the "group buy" feature.
This is the last bit of code where an order's line items could be changed where we were not using OrderContents.
This will hopefully let us see in Bugsnag when #6038 happens and so
we'll have all the diagnostics data. The fact that the `order.distributor`
is optional but mandatory to create the customer already gives us some
clue.
Fixes:
384) Spree::OrderMailer basic behaviour doesn't aggressively escape double quotes in confirmation body
Failure/Error: adjustments = adjustments.to_a + order.shipment_adjustments.to_a
ActionView::Template::Error:
Cannot have a has_many :through association 'Spree::Order#shipment_adjustments' which goes through 'Spree::Order#shipments' before the through association is defined.
# ./app/helpers/checkout_helper.rb:10:in `checkout_adjustments_for'
# ./app/views/spree/order_mailer/_order_summary.html.haml:43:in `_app_views_spree_order_mailer__order_summary_html_haml__2911251238692323485_70331958934800'
# ./app/views/spree/order_mailer/confirm_email_for_customer.html.haml:23:in `_app_views_spree_order_mailer_confirm_email_for_customer_html_haml__3734564010704881256_70331959518520'
# ./app/mailers/spree/order_mailer.rb:35:in `block in confirm_email_for_customer'
# ./app/mailers/spree/order_mailer.rb:33:in `confirm_email_for_customer'
# ./spec/mailers/order_mailer_spec.rb:20:in `block (3 levels) in <top (required)>'
# ------------------
# --- Caused by: ---
# ActiveRecord::HasManyThroughOrderError:
# Cannot have a has_many :through association 'Spree::Order#shipment_adjustments' which goes through 'Spree::Order#shipments' before the through association is defined.
# ./app/helpers/checkout_helper.rb:10:in `checkout_adjustments_for'
