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Ruby Freak

2008-Jan-10 06:08 UTC

undefined method `last'' for {}:Hash rake db:migrate

I have tried everything I can think of to make this work for 3 days.
Thanks in advance.

Here is what I did:
rails _1.2.5_ little_ones_bend
svn export  http://svn.subimage.com/source/substruct/site/trunk/vendor/plugins
vendor/plugins --username substruct --password substruct

svn export http://dev.rubyonrails.org/svn/rails/tags/rel_1-2-5 vendor/
rails
followed instructions from
http://dev.subimage.com/projects/substruct/wiki/InstallingSubstruct
ruby script/generate plugin_migration
rake db:migrate

As near as I can tell, the engine plugin is sending a Hash to the
function named "redefine_task"
which calls "resolve_args" and dies because Hash has no .last method
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1653:in
`resolve_args''

here it is. error on line 1653
    def resolve_args(args)
      task_name = args.shift
      arg_names = args #.map { |a| a.to_sym }
      needs = []
      if task_name.is_a?(Hash)
        hash = task_name
        task_name = hash.keys[0]
        needs = hash[task_name]
      end
      if arg_names.last.is_a?(Hash)   # line 1653 error here
        hash = arg_names.pop
        needs = hash[:needs]
        fail "Unrecognized keys in task hash: #{hash.keys.inspect}" if
hash.size > 1
      end
      needs = [needs] unless needs.respond_to?(:to_ary)
      [task_name, arg_names, needs]
    end


Here is the engine code that is calling redefine_task
      Rake::Task.redefine_task(plugin => :environment) do
        plugin_base   = RAILS_ROOT + "/vendor/plugins/#{plugin}"
        options       = []
        files         = Rake::FileList.new
        options << "-o doc/plugins/#{plugin}"
        options << "--title ''#{plugin.titlecase} Plugin
Documentation''"
        options << ''--line-numbers'' <<
''--inline-source''
        options << ''-T html''



C:\rails_projects\little_ones_bend>rake db:migrate --trace
(in C:/rails_projects/little_ones_bend)
rake aborted!
undefined method `last'' for {}:Hash
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1653:in
`resolve_args''
C:/rails_projects/little_ones_bend/config/../vendor/plugins/engines/
tasks/engine
s.rake:9:in `redefine_task''
C:/rails_projects/little_ones_bend/config/../vendor/plugins/engines/
tasks/engine
s.rake:24:in `redefine_task''
C:/rails_projects/little_ones_bend/config/../vendor/plugins/engines/
tasks/engine
s.rake:63
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1183:in `each''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1183:in `send''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1183:in `each''
C:/rails_projects/little_ones_bend/config/../vendor/plugins/engines/
tasks/engine
s.rake:61
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1737:in
`in_namespace''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:821:in
`namespace''
C:/rails_projects/little_ones_bend/config/../vendor/plugins/engines/
tasks/engine
s.rake:58
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1737:in
`in_namespace''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:821:in
`namespace''
C:/rails_projects/little_ones_bend/config/../vendor/plugins/engines/
tasks/engine
s.rake:54
C:/rails_projects/little_ones_bend/vendor/rails/railties/lib/tasks/
rails.rb:8:in
 `load''
C:/rails_projects/little_ones_bend/vendor/rails/railties/lib/tasks/
rails.rb:8
C:/rails_projects/little_ones_bend/vendor/rails/railties/lib/tasks/
rails.rb:8:in
 `each''
C:/rails_projects/little_ones_bend/vendor/rails/railties/lib/tasks/
rails.rb:8
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_re
quire''
C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require''
C:/rails_projects/little_ones_bend/rakefile:10
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:2149:in `load''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:2149:in
`raw_load_rakefile
''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1897:in
`load_rakefile''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in
`standard_exceptio
n_handling''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1896:in
`load_rakefile''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1880:in `run''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in
`standard_exceptio
n_handling''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1878:in `run''
C:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/bin/rake:31
C:/ruby/bin/rake:19:in `load''
C:/ruby/bin/rake:19
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Brian Szucs

2008-Jan-12 03:39 UTC

head link

Re: undefined method `last'' for {}:Hash rake db:migrat

Hi, I had this same problem. I am not sure of exactly what the internal
issue is but if you do a
sudo gem install -v=0.7.3 rake

and then

sudo gem uninstall rake and choose all the latest above it you should
work


Brian
-- 
Posted via http://www.ruby-forum.com/.

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Roger Pack

2008-Jan-12 22:48 UTC

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Re: undefined method `last'' for {}:Hash rake db:migrat

Brian Szucs wrote:> Hi, I had this same problem. I am not sure of exactly what the internal
> issue is but if you do a
> sudo gem install -v=0.7.3 rake
> 
> and then
> 
> sudo gem uninstall rake and choose all the latest above it you should
> work
> 
> 
> Brian
If you can''t uninstall rake version 0.8.x (which seems to be causing
the
problem), then run rake like
rake _0.7.3_ [command_name] # for it to run the right version.
GL.
-- 
Posted via http://www.ruby-forum.com/.

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Walter McGinnis

2008-Jan-13 23:44 UTC

head link

Re: undefined method `last'' for {}:Hash rake db:migrat

You might want to just change your code to work.  Do you have a
"redefine_task" method by chance?
https://rubyforge.org/forum/forum.php?thread_id=20548&forum_id=20061

Cheers,
Walter McGinnis
http://katipo.co.nz/

On Jan 13, 2008 11:48 AM, Roger Pack
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> Brian Szucs wrote:
> > Hi, I had this same problem. I am not sure of exactly what the
internal
> > issue is but if you do a
> > sudo gem install -v=0.7.3 rake
> >
> > and then
> >
> > sudo gem uninstall rake and choose all the latest above it you should
> > work
> >
> >
> > Brian
>
> If you can''t uninstall rake version 0.8.x (which seems to be
causing the
> problem), then run rake like
> rake _0.7.3_ [command_name] # for it to run the right version.
> GL.
> --
> Posted via http://www.ruby-forum.com/.
>
> >
>
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Ruby Freak

2008-Jan-14 05:20 UTC

head link

Re: undefined method `last'' for {}:Hash rake db:migrat

This is happening in an "out of the box" install of substruct, which
was developed in a prior version of ruby, rails, rake and engines. Now
it is broken.

Redefine_task is part of the engines plugin which us non-compatible
with rake above version 7.3
There is a Trac ticket to fix this.


What I really want to do is move substruct into 2.02 as a root app
rather than an plugin, but I was trying to do some mods to an existing
system that is running in the older environment. I just had a heck of
a time reverting everything back.
There is version 2.0 of engines, but I think it needs rails 2.0 and I
froze at 1.2.5

Thanks

TW

On Jan 13, 3:44 pm, "Walter McGinnis"
<walter.mcgin...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> You might want to just change your code to work.  Do you have a
> "redefine_task" method by
chance?https://rubyforge.org/forum/forum.php?thread_id=20548&forum_id=20061
>
> Cheers,
> Walter McGinnishttp://katipo.co.nz/
>
> On Jan 13, 2008 11:48 AM, Roger Pack
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
> wrote:
>
>
>
> > Brian Szucs wrote:
> > > Hi, I had this same problem. I am not sure of exactly what the
internal
> > > issue is but if you do a
> > > sudo gem install -v=0.7.3 rake
>
> > > and then
>
> > > sudo gem uninstall rake and choose all the latest above it you
should
> > > work
>
> > > Brian
>
> > If you can''t uninstall rake version 0.8.x (which seems to be
causing the
> > problem), then run rake like
> > rake _0.7.3_ [command_name] # for it to run the right version.
> > GL.
> > --
> >
Posted viahttp://www.ruby-forum.com/.
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Brian Szucs

2008-Jan-17 01:43 UTC

head link

Re: undefined method `last'' for {}:Hash rake db:migrat

I am not using engines or substruct so this must exist in another place. 
I will look around for it but substruct/enginess is not the only reason 
this is happening.
-- 
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Rails - Jan 2008 - undefined method `last' for {}:Hash rake db:migrate

undefined method `last'' for {}:Hash rake db:migrate

Re: undefined method `last'' for {}:Hash rake db:migrat

Re: undefined method `last'' for {}:Hash rake db:migrat

Re: undefined method `last'' for {}:Hash rake db:migrat

Re: undefined method `last'' for {}:Hash rake db:migrat

Re: undefined method `last'' for {}:Hash rake db:migrat