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# File 'lib/active_zuora/billing_preview.rb', line 16
def billing_preview
self.result = self.class.connection.request(:billing_preview) do |soap|
soap.body do |xml|
build_xml(xml, soap,
:namespace => soap.namespace,
:element_name => :requests,
:force_type => true)
end
end[:billing_preview_response][:results]
if result[:success]
clear_changed_attributes
filtered_invoice_items = self.result[:invoice_item].map do |invoice_item|
invoice_item.select{|key, v| ActiveZuora::InvoiceItem.field_names.include?(key)}
end
ActiveZuora::BillingPreviewResult.new(self.result.merge(invoice_item: filtered_invoice_items))
else
add_zuora_errors(result[:errors])
false
end
end
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