Added formatting for different content types, and edited fields to be…

… output

app/controllers/adopted_controller.rb

@@ -3,7 +3,21 @@ class AdoptedController < ApplicationController
 
   def index
     @things = Thing.where.not(user_id: !nil)
-    render json: @things
+    respond_to do |format|
+      format.csv do
+        headers['Content-Type'] ||= 'text/csv'
+        headers['Content-Disposition'] = "attachment; filename=\"adopted_drains.csv\""
+      end
+      format.xml do 
+        render xml: @things.map { |thing| {latitude: thing.lat, longitude: thing.lng, city_id: 'N-' + thing.city_id.to_s} }
+      end
+      format.json do
+        render json: @things.map { |thing| {latitude: thing.lat, longitude: thing.lng, city_id: 'N-' + thing.city_id.to_s} }
+      end
+      format.all do 
+        render json: @things.map { |thing| {latitude: thing.lat, longitude: thing.lng, city_id: 'N-' + thing.city_id.to_s} }
+      end
+    end
   end
 
 private

app/controllers/application_controller.rb

@@ -1,3 +1,5 @@
+require 'csv'
+
 class ApplicationController < ActionController::Base
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.

app/views/adopted/index.csv.erb

@@ -0,0 +1,5 @@
+<%- headers = ['Lat', 'Lng', 'City ID'] -%>
+<%= CSV.generate_line headers %>
+<%- @things.each do |thing| -%>
+<%= CSV.generate_line([thing.lat, thing.lng, "N-" + thing.city_id.to_s]) -%>
+<%- end -%>