hi, I am having some problem here with field Decimal
My Class:
require 'dm-core'
class Registry
include DataMapper::Resource
property :num, Decimal, :key => true, :precision => 20, :scale => 0
end
require 'dm-migrations'
DataMapper.finalize
DataMapper.setup(:default, 'sqlite::memory:')
DataMapper.auto_migrate!
My Test:
// I start irb
$ irb -r ./dm
/home/arthur/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/yaml.rb:56:in
`<top (required)>':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your
ruby.
// and create a new registry
ruby-1.9.3-p0 :001 > r = Registry.new(:num => 321512420108210029)
=> #<Registry @num=#<BigDecimal:9771c54,'0.3215124201 08210029E18',
18(27)>> // bigdecimal is showing correct num
ruby-1.9.3-p0 :002 > r.save
=> true
ruby-1.9.3-p0 :003 > Registry.all
=> [#<Registry @num=#<BigDecimal:98358e8,'0.3215124201 08210048E18',
18(27)>>] // num is wrong
ruby-1.9.3-p0 :004 >
Registry.all.first.num.to_i
//
trying to convert to int
=>
321512420108210048
//
wrong value
ruby-1.9.3-p0 :005 >
BigDecimal.new(321512420108210029).to_i //
here, aparently bigdecimal is working correct
=> 321512420108210029
Anyone can help me ? What am I doing wrong ?
I try too on mysql, and I have the same problem.
Thanks
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