Temp fix for missing accountables on self hosted instances (#1071)

* Temp fix #1068

* Cleanup

app/models/account.rb

@@ -28,8 +28,6 @@ class Account < ApplicationRecord
 
   delegated_type :accountable, types: Accountable::TYPES, dependent: :destroy
 
-  delegate :value, :series, to: :accountable
-
   class << self
     def by_group(period: Period.all, currency: Money.default_currency.iso_code)
       grouped_accounts = { assets: ValueGroup.new("Assets", currency), liabilities: ValueGroup.new("Liabilities", currency) }
@@ -75,6 +73,31 @@ def create_with_optional_start_balance!(attributes:, start_date: nil, start_bala
     end
   end
 
+  # Start of temporary fix for #1068
+  # ==========================================================================
+
+  # TODO: Both `series` and `value` methods are a temporary fix for #1068, which appears to be a data corruption issue.
+  # Every account should have an accountable no matter what, but some self hosted instances seem to have missing accountables.
+  # When this is fixed, we can add this back to `delegate :value, :series, to: :accountable`
+  def series(period: Period.all, currency: self.currency)
+    if accountable.present?
+      accountable.series(period: period, currency: currency)
+    else
+      TimeSeries.new([])
+    end
+  end
+
+  def value
+    if accountable.present?
+      accountable.value
+    else
+      balance_money
+    end
+  end
+
+  # ==========================================================================
+  # End of temporary fix for #1068
+
   def alert
     latest_sync = syncs.latest
     [ latest_sync&.error, *latest_sync&.warnings ].compact.first