1 files changed, 0 insertions, 79 deletions
diff --git a/app/models/concerns/loose_foreign_key.rb b/app/models/concerns/loose_foreign_key.rb
deleted file mode 100644
index 102292672b3..00000000000
--- a/app/models/concerns/loose_foreign_key.rb
+++ /dev/null
@@ -1,79 +0,0 @@
-# frozen_string_literal: true
-
-module LooseForeignKey
-  extend ActiveSupport::Concern
-
-  # This concern adds loose foreign key support to ActiveRecord models.
-  # Loose foreign keys allow delayed processing of associated database records
-  # with similar guarantees than a database foreign key.
-  #
-  # Prerequisites:
-  #
-  # To start using the concern, you'll need to install a database trigger to the parent
-  # table in a standard DB migration (not post-migration).
-  #
-  # > track_record_deletions(:projects)
-  #
-  # Usage:
-  #
-  # > class Ci::Build < ApplicationRecord
-  # >
-  # >   loose_foreign_key :security_scans, :build_id, on_delete: :async_delete
-  # >
-  # >   # associations can be still defined, the dependent options is no longer necessary:
-  # >   has_many :security_scans, class_name: 'Security::Scan'
-  # >
-  # > end
-  #
-  # Options for on_delete:
-  #
-  # - :async_delete - deletes the children rows via an asynchronous process.
-  # - :async_nullify - sets the foreign key column to null via an asynchronous process.
-  #
-  # How it works:
-  #
-  # When adding loose foreign key support to the table, a DELETE trigger is installed
-  # which tracks the record deletions (stores primary key value of the deleted row) in
-  # a database table.
-  #
-  # These deletion records are processed asynchronously and records are cleaned up
-  # according to the loose foreign key definitions described in the model.
-  #
-  # The cleanup happens in batches, which reduces the likelyhood of statement timeouts.
-  #
-  # When all associations related to the deleted record are cleaned up, the record itself
-  # is deleted.
-  included do
-    class_attribute :loose_foreign_key_definitions, default: []
-  end
-
-  class_methods do
-    def loose_foreign_key(to_table, column, options)
-      symbolized_options = options.symbolize_keys
-
-      unless base_class?
-        raise <<~MSG
-        loose_foreign_key can be only used on base classes, inherited classes are not supported.
-        Please define the loose_foreign_key on the #{base_class.name} class.
-        MSG
-      end
-
-      on_delete_options = %i[async_delete async_nullify]
-
-      unless on_delete_options.include?(symbolized_options[:on_delete]&.to_sym)
-        raise "Invalid on_delete option given: #{symbolized_options[:on_delete]}. Valid options: #{on_delete_options.join(', ')}"
-      end
-
-      definition = ActiveRecord::ConnectionAdapters::ForeignKeyDefinition.new(
-        table_name.to_s,
-        to_table.to_s,
-        {
-          column: column.to_s,
-          on_delete: symbolized_options[:on_delete].to_sym
-        }
-      )
-
-      self.loose_foreign_key_definitions += [definition]
-    end
-  end
-end