Add QR Code generation and sharing

.database_consistency.todo.yml

@@ -3,3 +3,6 @@ Profile:
   self_ref:
     MissingIndexChecker:
       enabled: false
+  uuid:
+    ColumnPresenceChecker:
+      enabled: false

Gemfile

@@ -29,6 +29,7 @@ gem "avo", ">= 3.2.1"
 
 # Other
 gem "bootsnap", require: false
+gem "draper"
 gem "inline_svg"
 gem "puma", ">= 5.0"
 gem "ransack"

Gemfile.lock

@@ -58,6 +58,10 @@ GEM
       globalid (>= 0.3.6)
     activemodel (7.1.3.4)
       activesupport (= 7.1.3.4)
+    activemodel-serializers-xml (1.0.2)
+      activemodel (> 5.x)
+      activesupport (> 5.x)
+      builder (~> 3.1)
     activerecord (7.1.3.4)
       activemodel (= 7.1.3.4)
       activesupport (= 7.1.3.4)
@@ -166,6 +170,13 @@ GEM
     diff-lcs (1.5.1)
     docile (1.4.0)
     dotenv (3.1.2)
+    draper (4.0.2)
+      actionpack (>= 5.0)
+      activemodel (>= 5.0)
+      activemodel-serializers-xml (>= 1.0)
+      activesupport (>= 5.0)
+      request_store (>= 1.0)
+      ruby2_keywords
     drb (2.2.1)
     dry-configurable (1.2.0)
       dry-core (~> 1.0, < 2)
@@ -375,6 +386,8 @@ GEM
     regexp_parser (2.9.2)
     reline (0.5.9)
       io-console (~> 0.5)
+    request_store (1.7.0)
+      rack (>= 1.4)
     rexml (3.3.2)
       strscan
     rouge (4.3.0)
@@ -436,6 +449,7 @@ GEM
       rubocop (~> 1.61)
       rubocop-rspec (~> 3, >= 3.0.1)
     ruby-progressbar (1.13.0)
+    ruby2_keywords (0.0.5)
     ruby_parser (3.21.0)
       racc (~> 1.5)
       sexp_processor (~> 4.16)
@@ -546,6 +560,7 @@ DEPENDENCIES
   database_consistency
   debug
   dotenv
+  draper
   erb_lint
   factory_bot_rails
   faker

app/controllers/profiles_controller.rb

@@ -1,6 +1,8 @@
 class ProfilesController < ApplicationController
+  before_action :set_profile, only: :show
+
   def show
-    @profile = current_profile
+    @profile = @profile.decorate
   end
 
   def edit
@@ -13,14 +15,23 @@ def update
 
     if @profile.save
       remove_profile_image_if_requested
-      redirect_to profile_path, notice: t("controllers.profiles.update.success")
+      redirect_to profile_path(@profile.uuid), notice: t("controllers.profiles.update.success")
     else
       render :edit, status: :unprocessable_entity
     end
   end
 
   private
 
+  def set_profile
+    @profile =
+      if params[:uuid] == current_profile.uuid
+        current_profile
+      else
+        Profile.public_profiles.find_by!(uuid: params[:uuid])
+      end
+  end
+
   def current_profile
     current_user.profile || current_user.build_profile
   end

app/decorators/profile_decorator.rb

@@ -0,0 +1,13 @@
+class ProfileDecorator < Draper::Decorator
+  delegate_all
+
+  def svg_qr_code(options = {})
+    RQRCode::QRCode.new(profile_url).as_svg(options)
+  end
+
+  private
+
+  def profile_url
+    Rails.application.routes.url_helpers.profile_url(object.uuid)
+  end
+end

app/models/profile.rb

@@ -13,13 +13,15 @@
 #  name                 :string
 #  profileable_type     :string           not null
 #  twitter_url          :string
+#  uuid                 :string
 #  created_at           :datetime         not null
 #  updated_at           :datetime         not null
 #  profileable_id       :integer          not null
 #
 # Indexes
 #
 #  index_profiles_on_profileable  (profileable_type,profileable_id)
+#  index_profiles_on_uuid         (uuid) UNIQUE
 #
 class Profile < ApplicationRecord
   has_one_attached :image
@@ -29,4 +31,16 @@ class Profile < ApplicationRecord
   has_one :speaker, through: :self_ref, source: :profileable, source_type: "Speaker"
 
   belongs_to :profileable, polymorphic: true
+
+  validates :uuid, uniqueness: true, presence: true
+
+  before_validation :set_uuid
+
+  scope :public_profiles, -> { where(is_public: true) }
+
+  private
+
+  def set_uuid
+    self.uuid ||= SecureRandom.uuid
+  end
 end

app/models/user.rb

@@ -36,6 +36,8 @@ class User < ApplicationRecord
 
   after_create_commit { create_profile! }
 
+  delegate :uuid, to: :profile, allow_nil: true
+
   def self.ransackable_attributes(_auth_object = nil)
     %w[email]
   end

app/views/layouts/_bottom_navbar.html.erb

@@ -7,8 +7,8 @@
     <%= inline_svg_tag "clock.svg", class: nav_icon_class_for([root_path]) %>
     My Schedule
   </a>
-  <a href="<%= profile_path %>" class="<%= nav_text_class_for [profile_path, edit_profile_path] %> flex flex-col items-center justify-center">
-    <%= inline_svg_tag "avatar_no_fill.svg", class: nav_icon_class_for([profile_path, edit_profile_path]) %>
+  <a href="<%= profile_path(current_user.uuid) %>" class="<%= nav_text_class_for [profile_path(current_user.uuid), edit_profile_path] %> flex flex-col items-center justify-center">
+    <%= inline_svg_tag "avatar_no_fill.svg", class: nav_icon_class_for([profile_path(current_user.uuid), edit_profile_path]) %>
     Profile
   </a>
   <a href="<%= root_path %>" class="<%= nav_text_class_for [root_path] %> flex flex-col items-center justify-center">

app/views/layouts/_flash_message.html.erb

@@ -2,4 +2,4 @@
     <div data-controller="closable" class="bg-black/70 shadow-simple backdrop-blur-[25px] rounded-lg px-5 py-4 absolute transition-all bottom-0 max-w-screen-sm text-white z-20 sticky">
         <%= message %>
     </div>
-</div>
+</div>

app/views/layouts/application.html.erb

@@ -24,7 +24,7 @@
       <% end %>
       <% flash.each do |type, message| %>
         <% if message.present? && message.is_a?(String) %>
-          <%= render partial: "layouts/flash_message", locals: { message: message }%>
+          <%= render partial: "layouts/flash_message", locals: { message: message } %>
         <% end %>
       <% end %>
       <%= yield %>

app/views/main/index.html.erb

@@ -1,2 +1,2 @@
 <h1>Homepage</h1>
-<%= link_to "Profile", profile_path %>
+<%= link_to "Profile", profile_path(current_user.uuid) %>

app/views/profiles/show.html.erb

@@ -55,6 +55,7 @@
       </div>
     </div>
   </div>
+  <%= render inline: @profile.svg_qr_code(module_size: 4) %>
   <div class="p-4 flex flex-col items-center gap-4 w-full">
     <%= link_to 'Edit Profile', edit_profile_path, class: "text-red font-bold rounded-sm underline italic text-lg" %>
   </div>

config/environments/development.rb

@@ -33,6 +33,8 @@
     config.cache_store = :null_store
   end
 
+  Rails.application.routes.default_url_options[:host] = "localhost:3000"
+
   # Store uploaded files on the local file system (see config/storage.yml for options).
   config.active_storage.service = :local
 
@@ -82,4 +84,7 @@
 
   # Raise error when a before_action's only/except options reference missing actions
   config.action_controller.raise_on_missing_callback_actions = true
+
+  # Allow ngrok hosts
+  config.hosts << /[a-z0-9.\-]+\.ngrok\.io/
 end

config/environments/test.rb

@@ -34,6 +34,8 @@
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
 
+  Rails.application.routes.default_url_options[:host] = "localhost:3000"
+
   # Store uploaded files on the local file system in a temporary directory.
   config.active_storage.service = :test
 

config/initializers/inflections.rb

@@ -11,6 +11,6 @@
 # end
 
 # These inflection rules are supported but not enabled by default:
-# ActiveSupport::Inflector.inflections(:en) do |inflect|
-#   inflect.acronym "RESTful"
-# end
+ActiveSupport::Inflector.inflections(:en) do |inflect|
+  inflect.acronym "QR"
+end

config/routes.rb

@@ -10,8 +10,9 @@
   resource :registration, only: [:new, :create]
   resource :session, only: [:new, :create, :destroy]
   resource :password, only: [:edit, :update]
-  resource :profile, only: [:edit, :update, :show]
   resource :password_reset, only: [:new, :create, :edit, :update] do
     get :post_submit
   end
+  resources :profiles, only: [:show], param: :uuid
+  resource :profile, only: [:edit, :update]
 end

config/tailwind.config.js

@@ -10,7 +10,7 @@ module.exports = {
   theme: {
     extend: {
       boxShadow: {
-        'simple': '0px 0px 25px 0px rgba(0, 0, 0, 0.50)'
+        simple: '0px 0px 25px 0px rgba(0, 0, 0, 0.50)'
       },
       fontFamily: {
         sans: ['Roboto', ...defaultTheme.fontFamily.sans]
@@ -31,7 +31,7 @@ module.exports = {
         blue: '#0A4E6B',
         'green-dark': '#62C554',
         'green-light': '#D8F1D4'
-      },
+      }
     }
   },
   plugins: [

db/migrate/20240710213305_add_profile_uuid_to_profile.rb

@@ -0,0 +1,6 @@
+class AddProfileUuidToProfile < ActiveRecord::Migration[7.1]
+  def change
+    add_column :profiles, :uuid, :string
+    add_index :profiles, :uuid, unique: true
+  end
+end

spec/controllers/profiles_controller_spec.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe ProfilesController, type: :controller do
+  let(:user) { create(:user, :with_profile) }
+  let(:profile) { user.profile }
+  let(:other_profile) { create(:profile, :with_user) }
+
+  before do
+    sign_in(user)
+  end
+
+  describe "GET #show" do
+    context "when the profile is yourself" do
+      it "returns a success response" do
+        get :show, params: {uuid: profile.uuid}
+        expect(response).to have_http_status(:success)
+      end
+    end
+
+    context "when the profile is public" do
+      before do
+        other_profile.update!(is_public: true)
+      end
+
+      it "returns a success response" do
+        get :show, params: {uuid: other_profile.uuid}
+        expect(response).to have_http_status(:success)
+      end
+    end
+
+    context "when the profile is not public" do
+      it "raises a RecordNotFound error" do
+        expect { get :show, params: {uuid: other_profile.uuid} }.to raise_error(ActiveRecord::RecordNotFound)
+      end
+    end
+  end
+end

spec/decorators/profile_decorator_spec.rb

@@ -0,0 +1,11 @@
+require "rails_helper"
+
+RSpec.describe ProfileDecorator do
+  let(:profile) { create(:profile, :with_user).decorate }
+
+  describe "#svg_qr_code" do
+    it "generates a QR code SVG" do
+      expect(profile.svg_qr_code).to include("<svg")
+    end
+  end
+end

spec/factories/profiles.rb

@@ -13,13 +13,15 @@
 #  name                 :string
 #  profileable_type     :string           not null
 #  twitter_url          :string
+#  uuid                 :string
 #  created_at           :datetime         not null
 #  updated_at           :datetime         not null
 #  profileable_id       :integer          not null
 #
 # Indexes
 #
 #  index_profiles_on_profileable  (profileable_type,profileable_id)
+#  index_profiles_on_uuid         (uuid) UNIQUE
 #
 FactoryBot.define do
   factory :profile do
@@ -30,9 +32,14 @@
     github_url { "https://github.com" }
     linkedin_url { "https://linkedin.com" }
     twitter_url { "https://twitter.com" }
+    uuid { SecureRandom.uuid }
 
     trait :with_user do
-      association :profileable, factory: :user
+      profileable { create(:user) }
+    end
+
+    trait :public do
+      is_public { true }
     end
   end
 end

spec/factories/users.rb

@@ -19,7 +19,9 @@
     password { "password2024" }
 
     trait :with_profile do
-      profile
+      after(:create) do |user|
+        create(:profile, profileable: user)
+      end
     end
   end
 end