error while running bundle exec rake db:migrate

Question

I got the following error after executing bundle exec rake db:migrate

/usr/lib/ruby/gems/1.8/gems/ancestry-2.1.0/lib/ancestry/instance_methods.rb:77: syntax error, unexpected ':', expecting ')'
          self.class.where(id: (ancestor_ids + ancestor_ids_...
                              ^
/usr/lib/ruby/gems/1.8/gems/ancestry-2.1.0/lib/ancestry/instance_methods.rb:77: syntax error, unexpected ')', expecting kEND
..._ids + ancestor_ids_was).uniq).each do |ancestor|

actual code in instance_methods is

Touch each of this record's ancestors

def touch_ancestors_callback

  # Skip this if callbacks are disabled
  unless ancestry_callbacks_disabled?

    # Only touch if the option is enabled
    if self.ancestry_base_class.touch_ancestors

      # Touch each of the old *and* new ancestors
      self.class.where(id: (ancestor_ids + ancestor_ids_was).uniq).each do |ancestor|
        ancestor.without_ancestry_callbacks do
          ancestor.touch
        end
      end
    end
  end
end

I compared the code with https://github.com/stefankroes/ancestry/blob/master/lib/ancestry/instance_methods.rb#L97 I am not understanding why i am getting that error. Please help me out.

Thank you in advance.

you're using gem with incompatible ruby version. use ruby 2.0 at least. — Mike Szyndel
– Mike Szyndel, Commented Nov 1, 2014 at 22:11

spickermann · Accepted Answer · 2014-11-01 23:56:41Z

1

This gem uses the new syntax for hashes that was introduced with Ruby 1.9. But you run this code with Ruby 1.8 what does not understand this syntax.

You have two options:

Find and use an older version of the Gem that uses the "old" syntax. If sucha a version even exists depends on how old the gem is. Or
Upgrade to a newer Ruby version.

I would advise upgrading Ruby, because 1.8 is outdated for years now and does not get security updates anymore (Read: https://www.ruby-lang.org/en/news/2013/12/17/maintenance-of-1-8-7-and-1-9-2/)

edited Nov 1, 2014 at 23:56

answered Nov 1, 2014 at 23:49

spickermann

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1 Comment

satyanarayana Over a year ago

i found ancestry 1.2.5 which is compatible with ruby 1.8. now it successfully executed. thank you.

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