Money amount formatting

config/config.exs

@@ -32,6 +32,15 @@ config :guardian, Guardian,
   secret_key: ";ofjm98y983yr82y387m238ymz23ymr8zmy23rym32ry23yrm32rm3hrm3xhhmkhmajdaou",
   serializer: MoneyTracker.GuardianSerializer
 
+config :number, currency: [
+                  unit: "USD",
+                  precision: 2,
+                  delimiter: " ",
+                  separator: ".",
+                  format: "%u %n",           # "USD 30.00"
+                  negative_format: "(%u %n)" # "(USD 30.00)"
+                ]
+
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{Mix.env}.exs"

mix.exs

@@ -19,7 +19,7 @@ defmodule MoneyTracker.Mixfile do
   def application do
     [mod: {MoneyTracker, []},
      applications: [:phoenix, :phoenix_pubsub, :phoenix_html, :cowboy, :logger, :gettext,
-                    :phoenix_ecto, :mariaex, :comeonin, :guardian]]
+                    :phoenix_ecto, :mariaex, :comeonin, :guardian, :number]]
   end
 
   # Specifies which paths to compile per environment.
@@ -45,7 +45,8 @@ defmodule MoneyTracker.Mixfile do
       {:mock, "~> 0.2.0", only: :test},
       {:ex_machina, "~> 1.0.1", only: :test},
       {:faker, "~> 0.5", only: :test},
-      {:exrm, "~> 1.0"}
+      {:exrm, "~> 1.0"},
+      {:number, "~> 0.5.0"}
     ]
   end
 

mix.lock

@@ -24,6 +24,7 @@
   "meck": {:hex, :meck, "0.8.4", "59ca1cd971372aa223138efcf9b29475bde299e1953046a0c727184790ab1520", [:make, :rebar], []},
   "mime": {:hex, :mime, "1.0.1", "05c393850524767d13a53627df71beeebb016205eb43bfbd92d14d24ec7a1b51", [:mix], []},
   "mock": {:hex, :mock, "0.2.0", "5991877be6bb514b647dbd6f4869bc12bd7f2829df16e86c98d6108f966d34d7", [:mix], [{:meck, "~> 0.8.2", [hex: :meck, optional: false]}]},
+  "number": {:hex, :number, "0.5.0", "52047c6db2168ecba7e4fc3c2b93c4f7366283dec8792eaae33de7c4c7f0efe4", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, optional: false]}]},
   "phoenix": {:hex, :phoenix, "1.2.1", "6dc592249ab73c67575769765b66ad164ad25d83defa3492dc6ae269bd2a68ab", [:mix], [{:cowboy, "~> 1.0", [hex: :cowboy, optional: true]}, {:phoenix_pubsub, "~> 1.0", [hex: :phoenix_pubsub, optional: false]}, {:plug, "~> 1.1", [hex: :plug, optional: false]}, {:poison, "~> 1.5 or ~> 2.0", [hex: :poison, optional: false]}]},
   "phoenix_ecto": {:hex, :phoenix_ecto, "3.2.1", "6cf11d590c61977f50fcb98ad8a10ee90ba8670a82cbf5eaf49cfaee2e95e8b7", [:mix], [{:ecto, "~> 2.1", [hex: :ecto, optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, optional: false]}, {:plug, "~> 1.0", [hex: :plug, optional: false]}]},
   "phoenix_html": {:hex, :phoenix_html, "2.9.2", "371160b30cf4e10443b015efce6f03e1f19aae98ff6487620477b13a5b2ef660", [:mix], [{:plug, "~> 1.0", [hex: :plug, optional: false]}]},

web/templates/page/index.html.eex

@@ -20,7 +20,7 @@
               <%= for {currency, balance} <- balances_per_currency(@current_user) do %>
                 <tr>
                   <td><%= currency %></td>
-                  <td><%= Float.to_string(balance, decimals: 2) %></td>
+                  <td><%= number_to_currency(balance, unit: "") %></td>
                 </tr>
               <% end %>
             </tbody>

web/templates/place_transaction/index.html.eex

@@ -13,7 +13,7 @@
   <tbody>
 <%= for transaction <- @transactions do %>
     <tr>
-      <td><%= Float.to_string(transaction.amount, decimals: 2) %>&nbsp;<%= @place.currency %></td>
+      <td><%= number_to_currency(transaction.amount, unit: @place.currency) %></td>
       <td><%= transaction.description %></td>
       <td><%= transaction.inserted_at %></td>
 

web/templates/transaction/index.html.eex

@@ -15,7 +15,7 @@
       <td>
         <%= link transaction.place.title, to: place_path(@conn, :show, transaction.place) %>
       </td>
-      <td><%= Float.to_string(transaction.amount, decimals: 2) %>&nbsp;<%= transaction.place.currency %></td>
+      <td><%= number_to_currency(transaction.amount, unit: transaction.place.currency) %></td>
       <td><%= transaction.description %></td>
       <td><%= transaction.inserted_at %></td>
     </tr>

web/views/place_view.ex

@@ -12,6 +12,8 @@ defmodule MoneyTracker.PlaceView do
   """
   @spec place_balance(Place.t) :: float
   def place_balance(place) do
-    Float.to_string(MoneyTracker.Place.BalanceCalculator.run(place), decimals: 2)
+    place
+    |> Place.BalanceCalculator.run
+    |> number_to_currency(decimals: 2, unit: place.currency)
   end
 end

web/web.ex

@@ -53,6 +53,7 @@ defmodule MoneyTracker.Web do
       import MoneyTracker.ErrorHelpers
       import MoneyTracker.Gettext
       import MoneyTracker.AuthViewHelpers
+      import Number.Currency
     end
   end