tag:blogger.com,1999:blog-11933937.post3716593703045725703..comments2010-07-09T12:17:12.019-05:00Stephen Chuhttp://www.blogger.com/profile/07181510921622947661noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-11933937.post-87826660116332903622010-07-09T12:17:12.010-05:002010-07-09T12:17:12.010-05:00i am using this method with the Money gem, and their example composed_of code (http://money.rubyforge.org/). When i submit my form, i am getting undefined method `cents&#39; for {&quot;cents&quot;=&gt;&quot;0.0&quot;, &quot;currency&quot;=&gt;&quot;usd&quot;}:HashWithIndifferentAccess<br /><br />composed_of is not looking in the amount hash for cents &amp; currency, it is using the hash itself. i cant seem to figure out why.Brewsternoreply@blogger.comtag:blogger.com,1999:blog-11933937.post-86152762143565396082008-08-05T21:27:00.000-05:002008-08-05T21:27:00.000-05:00Stephen, you can ignore my comment above. i went through the previous 2 posts on the composed_of topic and i better understand what you did. ThanksJRhttp://www.blogger.com/profile/15859286284585937480noreply@blogger.comtag:blogger.com,1999:blog-11933937.post-1260598565067447412008-07-30T22:23:00.000-05:002008-07-30T22:23:00.000-05:00Hi Steven, this is nice work! i&#39;m working on some statistical processing and looking at doing aggregation, but then persisting that data.<BR/><BR/>In your example, what if you wanted to keep a year-end balance?<BR/><BR/>Would you then create an AR class<BR/><BR/>class YearEndBalance &lt; ActiveRecord::Base<BR/> :belongs_to User<BR/> # fields would be<BR/> # id, year, user_id, balance<BR/>end<BR/><BR/>and have in User.rb:<BR/><BR/> :has_many year_end_balances<BR/><BR/>Obviously, the creation of year-end-balances would be done from an off-line process from a batch-scheduler.<BR/><BR/>This would complete the full circle of data aggregation i&#39;m trying to implement. not a very documented topic.JRhttp://www.blogger.com/profile/15859286284585937480noreply@blogger.comtag:blogger.com,1999:blog-11933937.post-55264609361906033182008-05-21T23:08:00.000-05:002008-05-21T23:08:00.000-05:00Hey Chu,<BR/>Nice post.<BR/>What's this ActiveRecord::Bases thing did you mean ActiveRecord::Base?<BR/><BR/>Sammy Zbayesianhttp://www.blogger.com/profile/17429125011813041283noreply@blogger.com