I want to use invoicing in my current project, but I need to know if it has been tested with Rails 3.

If not, I could probably port it to that version. Do you think this could be useful?

Thank you for your answer.

Lucas

Hello

In your video from 2009 demo'ing the invoicing gem you refer to a forthcoming version 0.3 with automatic vat calculation and so on. I'm wondering if that's seen the lite of day perhaps in version 0.21 or something?

I'm looking for something like this gem to help me build an automatic billing system for web hosting. It seems very well thought out, well done.

Jesse

Hey Guys,

Not sure if this is even still maintained, given the age of the last release.

I thought I'd let you know that the current implementation of know subclasses on ledger / line items is very slow on large tables. Our production ledge table has ~ 400k rows, and our line item table has 1M plus.

It took a bit of digging to find this method being the source of slow down.

The fix for us was simple, we added the following methods to our base classes for ledger / line item.

  def self.known_subclasses(_table = table_name, _type_column = inheritance_column)
    InvoicingLineItem.descendants
  end

  def self.known_subclasses(_table = table_name, _type_column = inheritance_column)
    InvoicingLedgerItem.descendants
  end

The cause of the slow down is a bit subtle, since we are constantly building invoices, that means we are inserting / deleting from the line_item / ledger_item table constantly. The method in teh gem for determining known subclasses:

SELECT DISTICT type from ...

Has to acquire a table look in order to determine the distinct set of entries for that table. This causes queueing all over the place.

Anyway thought you'd like to know, as there is a huge TODO left on the code that causes this select.

http://en.wikipedia.org/wiki/Goods_and_Services_Tax_(New_Zealand)

• 1 October 1986 at a rate of 10%
• increased to 12.5% on 1 July 1989
• increased to 15% on 1 October 2010

http://en.wikipedia.org/wiki/Goods_and_Services_Tax_(Australia) covers it off, but effectively it's:

• 10% on certain goods and services
• Prices should be always GST inclusive when displayed to a user
• Invoices render the total, gst, and combined total
• 1 July 2000 is the first date it came into effect

Running the tests produces:
/usr/share/ruby-rvm/gems/ruby-1.9.3-p194@invoicing/gems/activerecord-2.3.14/lib/active_record/base.rb:1998:in method_missing': undefined methodgenerate_attr_taxable_methods' for #Class:0x9c8bed8 (NoMethodError)
from /home/clockwerx/invoicing/invoicing/lib/invoicing/taxable.rb:225:in block in acts_as_taxable' from /home/clockwerx/invoicing/invoicing/lib/invoicing/taxable.rb:225:ineach'
from /home/clockwerx/invoicing/invoicing/lib/invoicing/taxable.rb:225:in acts_as_taxable' from /home/clockwerx/invoicing/invoicing/test/taxable_test.rb:53:inclass:TaxableRecord'
from /home/clockwerx/invoicing/invoicing/test/taxable_test.rb:50:in <class:TaxableTest>' from /home/clockwerx/invoicing/invoicing/test/taxable_test.rb:5:in<top (required)>'

... and I can't figure out why exactly - for some reason the ClassMethods aren't being included?