close #234 validate public key when enable pre auth

app/controllers/spree/admin/payment_methods_controller_decorator.rb

@@ -1,11 +1,64 @@
 module Spree
   module Admin
     module PaymentMethodsControllerDecorator
+
       def scope
         scope = current_store.payment_methods_including_vendor.accessible_by(current_ability, :index)
         scope = scope.where.not(vendor_id: nil) if params[:tab] == 'vendors'
         scope
       end
+
+      # overrdie
+      # handling error response
+      def create
+        @payment_method = params[:payment_method].delete(:type).constantize.new(payment_method_params)
+        @object = @payment_method
+        set_current_store
+        invoke_callbacks(:create, :before)
+        if @payment_method.save
+          invoke_callbacks(:create, :after)
+          flash[:success] = Spree.t(:successfully_created, resource: Spree.t(:payment_method))
+          redirect_to location_after_create
+        else
+          invoke_callbacks(:create, :fails)
+          respond_with(@object) do |format|
+            format.html { render action: :new, status: :unprocessable_entity }
+            format.js { render layout: false, status: :unprocessable_entity }
+          end
+        end
+      end
+
+      # overrdie
+      # handling error response
+      def update
+        invoke_callbacks(:update, :before)
+        payment_method_type = params[:payment_method].delete(:type)
+        if @payment_method['type'].to_s != payment_method_type
+          @payment_method.update_columns(
+            type: payment_method_type,
+            updated_at: Time.current
+          )
+          @payment_method = scope.find(params[:id])
+        end
+
+        attributes = payment_method_params.merge(preferences_params)
+        attributes.each do |k, _v|
+          attributes.delete(k) if k.include?('password') && attributes[k].blank?
+        end
+
+        if @payment_method.update(attributes)
+          set_current_store
+          invoke_callbacks(:update, :after)
+          flash[:success] = Spree.t(:successfully_updated, resource: Spree.t(:payment_method))
+          redirect_to spree.edit_admin_payment_method_path(@payment_method)
+        else
+          invoke_callbacks(:update, :fails)
+          respond_with(@payment_method) do |format|
+            format.html { render :edit, status: :unprocessable_entity }
+            format.json { render json: @payment_method.errors.full_messages.to_sentence, status: :unprocessable_entity }
+          end
+        end
+      end
     end
   end
 end

app/models/spree/gateway/payway_v2.rb

@@ -17,6 +17,12 @@ class Gateway::PaywayV2 < PaymentMethod
     #   Gem.loaded_specs.key?('spree_auth_devise')
     # end
 
+    validates :preferred_public_key, presence: true, if: :require_public_key?
+
+    def require_public_key?
+      enable_pre_auth == true
+    end
+
     def payment_source_class
       Spree::VpagoPaymentSource
     end