bulk api

gistfile1.rb

# Bulk API design
#
# resources :posts
class PostsController < ActiveController::Base
  # GET /posts/1,4,50,90
  # post_url([ @post, @post ])
  def show_many
    @posts = Post.find(params[:ids])
  end

  # PUT /posts/1,4,50,90
  def update_many
    @posts = Post.find(params[:ids])

    Post.transaction do
      @posts.each do |post|
        post.update_attributes!(params[:posts][post.id])
      end
    end
  end
  
  # POST /posts/many
  def create_many
  end

  # DELETE /posts/1,4,50,90
  def destroy_many
  end
end

If I recall correctly, Richardson's Restful Web Services recommends , for dimensional things (like /locations/lat,long/) and ; for lists of things (like /posts/1;2;3). Allamaraju's Restful Web Services Cookbook, on the other hand, doesn't express a preference between the two.