Module: Spree::OrderDecorator

Defined in:
app/models/spree/order_decorator.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.prepended(base) ⇒ Object 



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# File 'app/models/spree/order_decorator.rb', line 3

def self.prepended(base)
  # Hook 1: Add/Remove COD Surcharge for both Rails (confirm) and Next.js (complete) flows
  base.state_machine.before_transition to: [:confirm, :complete], do: :manage_cod_surcharge
  
  # Hook 2: Auto-void Delhivery waybills if the order is canceled
  base.state_machine.after_transition to: :canceled, do: :cancel_delhivery_shipments
end

Instance Method Details

#manage_cod_surcharge ⇒ Object 



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# File 'app/models/spree/order_decorator.rb', line 11

def manage_cod_surcharge
  # 1. Check if the customer chose Delhivery COD
  is_cod = payments.valid.any? { |p| p.payment_method&.type == 'Spree::PaymentMethod::DelhiveryCod' }
  
  # 2. Fetch your Delhivery configuration
  integration = Spree::Integrations::Delhivery.active.first
  surcharge_amount = integration&.preferred_cod_surcharge_amount.to_f

  # 3. Apply or Remove the financial adjustment
  if is_cod && surcharge_amount > 0
    # Destroy any old COD fees to prevent duplicate stacking
    adjustments.where(label: 'COD Surcharge').destroy_all
    
    # Create the new fee
    adjustments.create!(
      order: self,
      adjustable: self, # Apply to the whole order
      label: 'COD Surcharge',
      amount: surcharge_amount,
      state: 'closed', # Prevents Spree's auto-calculator from zeroing it out
      included: false
    )
  else
    # If they switched back to Prepaid, cleanly remove the fee
    adjustments.where(label: 'COD Surcharge').destroy_all
  end

  # Force Spree to recalculate the grand total with the new fee
  updater.update
end