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What is the best way of checking this? I have 3 tables: groups users group_members class GroupMember < ActiveRecord::Base belongs_to :group belongs_to :user validates_uniqueness_of :user_id, :scope => "group_id" Then I want a method here that checks if a given user is a member of a given group. What is the right way of doing that? def

Since Ajax doesn''t support file uploads, I''m using "IFRAME remoting made easy" (http://sean.treadway.info/). I''m saving a file to the filesystem, and then trying to put it in to the database when I do the final submit with ajax. I thought picking the file up and putting it in the db would be as easy as having: "@image.data =

I intend to release a project I wrote with Rails. What is the right licensing scheme for a web application (content managing system) which could grow with plugins and add-ons ? Personally, I would prefer the GPL but does that mean any add-on to the CMS (like task management) will have to be GPL ? If some people contribute to the code could it still be double-licenced so that the people who