Store MD5 hash of commenter email for using with avatar

Author: Bill Heaton

app/controllers/api/auth_controller.rb

@@ -17,7 +17,7 @@ def authenticate_commenter
       commenter = Commenter.create!(name: params[:username], email: params[:email])
     end
     if commenter
-      render json: { auth_token: commenter.generate_auth_token }
+      render json: { auth_token: commenter.generate_auth_token, commenter_id: commenter.id }
     else
       render json: { error: 'Invalid name or email' }, status: :unauthorized
     end

app/controllers/api/v1/commenters_controller.rb

@@ -0,0 +1,31 @@
+class Api::V1::CommentersController < ApiControllerController
+  skip_before_action :set_current_user, :authenticate_request, only: [:index, :show, :show_association, :get_related_resource]
+
+  private
+
+    def set_current_user
+      if decoded_auth_token
+        @current_user ||= Commenter.find(decoded_auth_token[:commenter_id])
+        unless @current_user
+          @current_user ||= User.find(decoded_auth_token[:user_id])
+        end
+      end
+    end
+
+    def _serializer
+      JSONAPI::ResourceSerializer.new(resource_klass,
+                                      include: @request.include,
+                                      fields: @request.fields,
+                                      base_url: base_url,
+                                      key_formatter: key_formatter,
+                                      route_formatter: route_formatter)
+    end
+
+    def commenter_params
+      params.require(:post).permit(:name, :email)
+    end
+
+    def _default_sort
+      [{:field=>"created_at", :direction=>:desc}]
+    end
+end

app/models/commenter.rb

@@ -1,14 +1,25 @@
+require 'digest'
+
 class Commenter < ActiveRecord::Base
+  before_save :create_hash
+
   has_many :comments
 
   validates :name, :length => { :minimum => 4 }
   validates :email, uniqueness: true, email: true
+  validates :email, uniqueness: true, email: true
 
   def generate_auth_token
     payload = { commenter_id: self.id }
     AuthToken.encode(payload)
   end
 
+  def create_hash
+    md5 = Digest::MD5.new
+    md5 << self.email
+    self.email_hash = md5.hexdigest
+  end
+
   def self.find_by_email(email)
     self.where(email: email).first
   end

app/resources/api/v1/comment_resource.rb

@@ -1,7 +1,7 @@
 require 'jsonapi/resource'
 
 class Api::V1::CommentResource < JSONAPI::Resource
-  attributes :id, :body, :approved
+  attributes :id, :body, :approved, :created_at
   has_one :commenter
   has_one :post
 end

app/resources/api/v1/commenter_resource.rb

@@ -2,5 +2,10 @@
 
 class Api::V1::CommenterResource < JSONAPI::Resource
   attributes :id, :name
+  attribute :hash
   has_many :comments
+
+  def hash
+    @model.email_hash
+  end
 end

db/migrate/20150528222934_add_email_hash_to_commenters.rb

@@ -0,0 +1,5 @@
+class AddEmailHashToCommenters < ActiveRecord::Migration
+  def change
+    add_column :commenters, :email_hash, :string
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150510045633) do
+ActiveRecord::Schema.define(version: 20150528222934) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -28,6 +28,7 @@
     t.string   "email"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.string   "email_hash"
   end
 
   add_index "commenters", ["email"], name: "index_commenters_on_email", unique: true, using: :btree

spec/models/commenter_spec.rb

@@ -1,5 +1,25 @@
 require 'rails_helper'
+require 'digest'
 
 RSpec.describe Commenter, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
+
+  email = 'solo@rebels.com'
+
+  before(:all) do
+    @commenter = Commenter.create({ :name => 'hanssolo', :email => email });
+  end
+
+  after(:all) do
+    @commenter.delete
+  end
+
+  it 'creates a hash of the email address' do
+    expect( @commenter ).to be_truthy
+    expect( @commenter.email_hash ).to be_truthy
+
+    md5 = Digest::MD5.new
+    md5 << email
+
+    expect( @commenter.email_hash ).to eq md5.hexdigest
+  end
 end