Create an update route

app/controllers/people_controller.rb

@@ -16,4 +16,8 @@ class PeopleController < ApplicationController
     def delete
         render json: Person.delete(params["id"])
     end
+
+    def update
+        render json: Person.update(params["id"], params["person"])
+    end
 end

app/models/person.rb

@@ -27,4 +27,9 @@ class Person
         results = DB.exec("DELETE FROM people WHERE id=#{id};")
         return { deleted: true }
     end
+
+    def self.update(id, opts={})
+        results = DB.exec("UPDATE people SET name='#{opts["name"]}', age=#{opts["age"]} WHERE id=#{id} ;")
+        return { updated: true }
+    end
 end

config/routes.rb

@@ -4,4 +4,5 @@ Rails.application.routes.draw do
   get '/people/:id', to: 'people#show'
   post '/people', to: 'people#create'
   delete '/people/:id', to: 'people#delete'
+  put '/people/:id', to: 'people#update'
 end