If I understand correctly you have records in the db and wish to compare them on demand by the user clicking on a link which goes to a compare controller. In this case I would pass the id values as parameters of a GET request on the compare controller. It should not be a POST as it does not cause the data in the db to be changed. The actual compare operation should be a method of the model whose objects are being compared of course.
Colin
How can you pass array of parameters to GET request?
The same as anything else, eg if @my_array contains [0,1,2] <%= link_to 'Compare', :controller => 'compare', :action => 'do_compare', :ids => @my_array %>
If the values you want to pass come from fields then it just a matter of setting up the fields correctly. Google should be able to sort you out, I always have to look it up.
If you are only comparing two records then just pass the ids as two params.
Colin
Colin Law wrote:
Whichever makes more sense for you is the way to go. I think I would probably put it in a compare action in the Plans controller.
Colin