app/controllers/spree/admin/marketplace_settings_controller.rb
class Spree::Admin::MarketplaceSettingsController < Spree::Admin::BaseController
def edit
@config = Spree::MarketplaceConfiguration.new
end
def update
config = Spree::MarketplaceConfiguration.new
params.each do |name, value|
next unless config.has_preference? name
config[name] = value
end
flash[:success] = Spree.t('admin.marketplace_settings.update.success')
redirect_to spree.edit_admin_marketplace_settings_path
end
end