Module: ActiveRecord::ConnectionAdapters::CockroachDB::ReferentialIntegrity

Included in:
ActiveRecord::ConnectionAdapters::CockroachDBAdapter
Defined in:
lib/active_record/connection_adapters/cockroachdb/referential_integrity.rb

Instance Method Summary collapse

Instance Method Details

#check_all_foreign_keys_valid! ⇒ Object

CockroachDB will raise a ‘PG::ForeignKeyViolation` when re-enabling referential integrity (e.g: adding a foreign key with invalid data raises). So foreign keys should always be valid for that matter.



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# File 'lib/active_record/connection_adapters/cockroachdb/referential_integrity.rb', line 32

def check_all_foreign_keys_valid!
  true
end

#disable_referential_integrity ⇒ Object 



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# File 'lib/active_record/connection_adapters/cockroachdb/referential_integrity.rb', line 36

def disable_referential_integrity
  foreign_keys = tables.map { |table| foreign_keys(table) }.flatten

  foreign_keys.each do |foreign_key|
    remove_foreign_key(foreign_key.from_table, name: foreign_key.options[:name])
  end

  yield

  # Prefixes and suffixes are added in add_foreign_key
  # in AR7+ so we need to temporarily disable them here,
  # otherwise prefixes/suffixes will be erroneously added.
  old_prefix = ActiveRecord::Base.table_name_prefix
  old_suffix = ActiveRecord::Base.table_name_suffix

  ActiveRecord::Base.table_name_prefix = ""
  ActiveRecord::Base.table_name_suffix = ""

  begin
    foreign_keys.each do |foreign_key|
      # Avoid having PG:DuplicateObject error if a test is ran in transaction.
      # TODO: verify that there is no cache issue related to running this (e.g: fk
      #   still in cache but not in db)
      next if foreign_key_exists?(foreign_key.from_table, name: foreign_key.options[:name])

      add_foreign_key(foreign_key.from_table, foreign_key.to_table, **foreign_key.options)
    end
  ensure
    ActiveRecord::Base.table_name_prefix = old_prefix
    ActiveRecord::Base.table_name_suffix = old_suffix
  end
end