Module: ExplicitActiveRecord::NoDBAccess

Extended by:
T::Sig
Defined in:
lib/explicit_activerecord/no_db_access.rb

Defined Under Namespace

Classes: DbAccessError

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.in_a_no_db_access_block? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/explicit_activerecord/no_db_access.rb', line 15

def self.in_a_no_db_access_block?
  (@pure_function_block_counter || 0) > 0
end

.no_db_access ⇒ Object 



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# File 'lib/explicit_activerecord/no_db_access.rb', line 20

def self.no_db_access
  unless @subscribed
    ActiveSupport::Notifications.subscribe('sql.active_record') do |_name, _start, _finish, _id, _payload|
      if NoDBAccess.in_a_no_db_access_block?
        @should_raise = true
      end
    end
    @subscribed = true
  end

  @pure_function_block_counter = (@pure_function_block_counter || 0) + 1
  yield

  if @should_raise
    @should_raise = false
    raise DbAccessError.new('Cannot execute sql within a no_db_access block.')
  end
ensure
  @should_raise = false
  @pure_function_block_counter -= 1
end

Instance Method Details

#no_db_access(&block) ⇒ Object 



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# File 'lib/explicit_activerecord/no_db_access.rb', line 43

def no_db_access(&block)
  NoDBAccess.no_db_access(&block)
end