Merge branch 'master' into transaction-vc

Gemfile

@@ -78,7 +78,7 @@ group :development do
 end
 
 group :production do
-  gem 'mysql2'
+  gem 'mysql2', '~> 0.3.0'
 end
 
 gem 'high_voltage', '~> 2.4.0'

Gemfile.lock

@@ -268,7 +268,7 @@ DEPENDENCIES
   jbuilder (~> 2.0)
   jquery-datatables-rails
   jquery-rails
-  mysql2
+  mysql2 (~> 0.3.0)
   omniauth-oauth2
   purecss-rails
   rails (= 4.2.4)

app/assets/stylesheets/application.css

@@ -14,4 +14,5 @@
  *= require dataTables/jquery.dataTables
  *= require select2
  *= require_self
+ *= require purecss
  */

app/assets/stylesheets/purecss.css

@@ -0,0 +1,9 @@
+/*
+  =require purecss/base
+  =require purecss/buttons
+  =require purecss/forms
+  =require purecss/grids
+  =require purecss/grids-responsive
+  =require purecss/menus
+  =require purecss/tables
+*/

app/controllers/application_controller.rb

@@ -2,4 +2,8 @@ class ApplicationController < ActionController::Base
   # Prevent CSRF attacks by raising an exception.
   # For APIs, you may want to use :null_session instead.
   protect_from_forgery with: :exception
+
+  rescue_from CanCan::AccessDenied do |exception|
+    redirect_to root_url, alert: exception.message
+  end
 end

app/controllers/users_controller.rb

@@ -1,2 +1,11 @@
 class UsersController < ApplicationController
+  load_and_authorize_resource
+
+  def show
+    @user = User.find(params[:id])
+  end
+
+  def index
+    @users = User.all
+  end
 end

app/models/ability.rb

@@ -0,0 +1,13 @@
+class Ability
+  include CanCan::Ability
+
+  def initialize(user)
+    user ||= User.new # guest user (not logged in)
+
+    if user.penning?
+      can :manage, :all
+    else
+      can :read, user, id: user.id
+    end
+  end
+end

app/models/client.rb

@@ -12,6 +12,9 @@
 class Client < ActiveRecord::Base
   before_create :generate_key
 
+  validates :name, presence: true, uniqueness: true
+  validates :key, presence: true, uniqueness: true
+
   def transactions
     Transaction.where(origin: name)
   end

app/models/transaction.rb

@@ -19,13 +19,21 @@ class Transaction < ActiveRecord::Base
   after_save    :recalculate_balances
   after_destroy :recalculate_balances
 
+  validates :amount, numericality: { greater_than: 0 }
+  validate :different_debtor_creditor
+
   def client
     Client.find_by name: origin
   end
 
   private
+
   def recalculate_balances
     creditor.calculate_balance!
     debtor.calculate_balance!
   end
+
+  def different_debtor_creditor
+    self.errors.add :base, "Can't write money to yourself" if self.debtor == self.creditor
+  end
 end

app/models/user.rb

@@ -17,6 +17,9 @@ class User < ActiveRecord::Base
   has_many :outgoing_transactions,
     class_name: 'Transaction', foreign_key: 'debtor_id'
 
+  validates :name, presence: true, uniqueness: true
+  validates :balance, presence: true
+
   def transactions
     Transaction.where("creditor_id = ? OR debtor_id = ?", id, id)
   end

app/views/layouts/application.html.haml

@@ -7,4 +7,5 @@
     = javascript_include_tag 'application', 'data-turbolinks-track' => true
     = csrf_meta_tags
   %body
+    = content_tag :div, flash[:alert] if flash[:alert]
     = yield

app/views/users/index.html.erb

@@ -0,0 +1,20 @@
+<h2>Users</h2>
+
+<table>
+  <thead>
+    <tr>
+      <th>ID</th>
+      <th>Name</th>
+      <th>Balance</th>
+    </tr>
+  </thead>
+  <tbody>
+    <% @users.each do |user| %>
+      <tr>
+        <td><%= user.id %></td>
+        <td><%= user.name %></td>
+        <td><%= user.balance %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>

app/views/users/show.html.erb

@@ -0,0 +1,28 @@
+<h2><%= @user.name %></h2>
+
+<table>
+  <thead>
+    <tr>
+      <th>ID</th>
+      <th>Debtor</th>
+      <th>Creditor</th>
+      <th>Amount</th>
+      <th>Origin</th>
+      <th>Message</th>
+      <th>Time</th>
+    </tr>
+  </thead>
+  <tbody>
+    <% @user.transactions.each do |transaction| %>
+      <tr>
+        <td><%= transaction.id %></td>
+        <td><%= transaction.debtor.name %></td>
+        <td><%= transaction.creditor.name %></td>
+        <td><%= transaction.amount %></td>
+        <td><%= transaction.origin %></td>
+        <td><%= transaction.message %></td>
+        <td><%= transaction.created_at %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>

config/routes.rb

@@ -6,59 +6,5 @@ Rails.application.routes.draw do
   root to: 'high_voltage/pages#show', id: "landing"
 
   resources :transactions, only: [:new, :index, :create]
-
-  # The priority is based upon order of creation: first created -> highest priority.
-  # See how all your routes lay out with "rake routes".
-
-  # You can have the root of your site routed with "root"
-  # root 'welcome#index'
-
-  # Example of regular route:
-  #   get 'products/:id' => 'catalog#view'
-
-  # Example of named route that can be invoked with purchase_url(id: product.id)
-  #   get 'products/:id/purchase' => 'catalog#purchase', as: :purchase
-
-  # Example resource route (maps HTTP verbs to controller actions automatically):
-  #   resources :products
-
-  # Example resource route with options:
-  #   resources :products do
-  #     member do
-  #       get 'short'
-  #       post 'toggle'
-  #     end
-  #
-  #     collection do
-  #       get 'sold'
-  #     end
-  #   end
-
-  # Example resource route with sub-resources:
-  #   resources :products do
-  #     resources :comments, :sales
-  #     resource :seller
-  #   end
-
-  # Example resource route with more complex sub-resources:
-  #   resources :products do
-  #     resources :comments
-  #     resources :sales do
-  #       get 'recent', on: :collection
-  #     end
-  #   end
-
-  # Example resource route with concerns:
-  #   concern :toggleable do
-  #     post 'toggle'
-  #   end
-  #   resources :posts, concerns: :toggleable
-  #   resources :photos, concerns: :toggleable
-
-  # Example resource route within a namespace:
-  #   namespace :admin do
-  #     # Directs /admin/products/* to Admin::ProductsController
-  #     # (app/controllers/admin/products_controller.rb)
-  #     resources :products
-  #   end
+  resources :users, only: [:show, :index]
 end

db/migrate/20150908091546_create_transactions.rb

@@ -1,13 +1,16 @@
 class CreateTransactions < ActiveRecord::Migration
   def change
     create_table :transactions do |t|
-      t.references :debtor, index: true, foreign_key: true, null: false
-      t.references :creditor, index: true, foreign_key: true, null: false
+      t.references :debtor, index: true, null: false
+      t.references :creditor, index: true, null: false
       t.integer :amount, null: false, default: 0
       t.string :origin, null: false
       t.string :message
 
       t.timestamps null: false
     end
+
+    add_foreign_key :transactions, :users, column: :creditor_id
+    add_foreign_key :transactions, :users, column: :debtor_id
   end
 end