Module: ActiveRecord::ConnectionAdapters::PostgreSQL::ReferentialIntegrity

Included in:
ActiveRecord::ConnectionAdapters::PostgreSQLAdapter
Defined in:
lib/active_record/connection_adapters/postgresql/referential_integrity.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#disable_referential_integrity ⇒ Object

:nodoc:



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# File 'lib/active_record/connection_adapters/postgresql/referential_integrity.rb', line 7

def disable_referential_integrity # :nodoc:
  original_exception = nil

  begin
    transaction(requires_new: true) do
      execute(tables.collect { |name| "ALTER TABLE #{quote_table_name(name)} DISABLE TRIGGER ALL" }.join(";"))
    end
  rescue ActiveRecord::ActiveRecordError => e
    original_exception = e
  end

  begin
    yield
  rescue ActiveRecord::InvalidForeignKey => e
    warn <<-WARNING
WARNING: Rails was not able to disable referential integrity.

This is most likely caused due to missing permissions.
Rails needs superuser privileges to disable referential integrity.

    cause: #{original_exception.try(:message)}

    WARNING
    raise e
  end

  begin
    transaction(requires_new: true) do
      execute(tables.collect { |name| "ALTER TABLE #{quote_table_name(name)} ENABLE TRIGGER ALL" }.join(";"))
    end
  rescue ActiveRecord::ActiveRecordError
  end
end