I have a ruby on rails application already built and designed. The application utilizes Active Admin. You must be familiar with Active Admin as it will overrides all the files Rails use.
What Im trying to accomplish is, calling different values from an external table and displaying them as a text. This has to be triggered when a user chooses a different value from a drop down menu. Every time the user chooses different item for that menu, related info to that item will be displayed.
In additional to displaying, some basic calculation would be done and automatically entered to a field.
I believe this task could be done utilizing Jquery and Javascript or even coffeescript. However, Active Admin will kinda over ride the basic files which makes it harder to insert these values in the required page.