Fix #910

app/helpers/accounts_helper.rb

@@ -37,4 +37,11 @@ def class_mapping(accountable_type)
       "Vehicle" => { text: "text-pink-500", bg: "bg-pink-500", bg_transparent: "bg-pink-500/10", fill: "fill-pink-500", hex: "#F23E94" }
     }.fetch(accountable_type, { text: "text-gray-500", bg: "bg-gray-500", bg_transparent: "bg-gray-500/10", fill: "fill-gray-500", hex: "#737373" })
   end
+
+  def format_accounts_balance(accounts, options = {})
+    accounts.group_by(&:currency)
+            .transform_values { |acc| acc.sum(&:balance_money) }
+            .map { |_currency, balance| balance.to_s }
+            .join(", ")
+  end
 end

app/views/accounts/_accountable_group.html.erb

@@ -6,7 +6,7 @@
       <p><%= to_accountable_title(Accountable.from_type(group)) %></p>
       <span class="text-gray-400 mx-2">&middot;</span>
       <p><%= accounts.count %></p>
-      <p class="ml-auto"><%= format_money accounts.sum(&:balance_money) %></p>
+      <p class="ml-auto"><%= format_accounts_balance(accounts) %></p>
     </div>
     <div class="bg-white">
       <% accounts.each do |account| %>

test/helpers/accounts_helper_test.rb

@@ -0,0 +1,16 @@
+require "test_helper"
+
+class AccountsHelperTest < ActionView::TestCase
+  def setup
+    @account1 = Account.new(currency: 'USD', balance: 1)
+    @account2 = Account.new(currency: 'USD', balance: 2)
+    @account3 = Account.new(currency: 'EUR', balance: 7)
+  end
+
+  test "#format_accounts_balance(accounts)" do
+    assert_equal "$3.00", format_accounts_balance([@account1, @account2])
+    assert_equal "$3.00, €7,00", format_accounts_balance([@account1, @account2, @account3])
+    assert_equal "", format_accounts_balance([])
+    assert_equal "$0.00", format_accounts_balance([Account.new(currency: 'USD', balance: 0)])
+  end
+end