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Fix: ActiveRecord::DeleteRestrictionError (MAYBE-RAILS-CA) #1613

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@revise-dev revise-dev bot commented Jan 11, 2025

The error occurs when attempting to delete an Account::Transaction record that is part of a transfer relationship. The current implementation uses dependent: :restrict_with_exception on both the transfer_as_inflow and transfer_as_outflow associations, which prevents deletion of transactions that are part of transfers. This was likely implemented to prevent orphaned transfer records.

However, this restriction is overly protective. When deleting a transaction that's part of a transfer, it makes more sense to automatically delete the associated transfer record rather than preventing the deletion entirely. This maintains data integrity while providing a better user experience.

Changes made:

  1. Modified both transfer associations in Account::Transaction model to use dependent: :destroy instead of dependent: :restrict_with_exception
  2. This means when a transaction is deleted:
    • If it's an inflow transaction, the associated transfer record will be deleted
    • If it's an outflow transaction, the associated transfer record will be deleted
  3. Added a new test case to verify this behavior, ensuring that:
    • Deleting a transaction properly decrements the Transfer count
    • The associated transfer record is actually removed from the database
    • The test follows existing testing patterns in the codebase

This change aligns with Rails conventions for handling dependent records and provides a more flexible solution while maintaining data integrity. The original intent of preventing orphaned transfers is still maintained, but now it's handled through cascading deletes rather than restrictions.

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@@ -6,8 +6,8 @@ class Account::Transaction < ApplicationRecord
has_many :taggings, as: :taggable, dependent: :destroy
has_many :tags, through: :taggings

has_one :transfer_as_inflow, class_name: "Transfer", foreign_key: "inflow_transaction_id", dependent: :restrict_with_exception

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