Integrating usps api on rails application

Question

I want to integrate https://www.usps.com/ and also fedex api on my rails application, but I could not understand their documentation. Is there anybody who can help me? Or can any one provide me an easy tutorial of how it should be integrate on web ? I want to calculate the cost of package or gifts of the users on many condition.

Please note: there is a gem for this sevice but it is too old and the application I am going to build it is on rails 3.

Thanks in advance.

Answer 1

This stackoverflow answer might be helpful to you. There is this another gem called fedex you can look into. Hope this helps.