Magic Multi Connections gem + Rails 3.1

Rails
1

Hello,

Like in topic, did anyone tried to run this gem under 3.1? I’m getting
error that mirror_db_connection is not valid key:

ArgumentError: Unknown key: mirror_db_connection
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activesupport-3.1.0/lib/active_support/core_ext/hash/keys.rb:44:in
block in assert_valid_keys' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activesupport-3.1.0/lib/active_support/core_ext/hash/keys.rb:43:ineach_key’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activesupport-3.1.0/lib/active_support/core_ext/hash/keys.rb:43:in
assert_valid_keys' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activerecord-3.1.0/lib/active_record/associations/builder/ association.rb:29:invalidate_options’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activerecord-3.1.0/lib/active_record/associations/builder/
association.rb:20:in build' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activerecord-3.1.0/lib/active_record/autosave_association.rb:127:inbuild’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activerecord-3.1.0/lib/active_record/associations/builder/
belongs_to.rb:14:in build' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activerecord-3.1.0/lib/active_record/associations/builder/ association.rb:12:inbuild’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activerecord-3.1.0/lib/active_record/associations.rb:1409:in
belongs_to' from /Users/nopik/Documents/Projects/Christmas/app/models/ intention.rb:2:inclass:Intention’
from /Users/nopik/Documents/Projects/Christmas/app/models/
intention.rb:1:in <top (required)>' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activesupport-3.1.0/lib/active_support/dependencies.rb:456:inload’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activesupport-3.1.0/lib/active_support/dependencies.rb:456:in block in load_file' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activesupport-3.1.0/lib/active_support/dependencies.rb:640:innew_constants_in’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activesupport-3.1.0/lib/active_support/dependencies.rb:455:in
load_file' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activesupport-3.1.0/lib/active_support/dependencies.rb:342:inrequire_or_load’
… 14 levels…
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activesupport-3.1.0/lib/active_support/dependencies.rb:550:in []' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activesupport-3.1.0/lib/active_support/dependencies.rb:595:inconstantize’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activerecord-3.1.0/lib/active_record/base.rb:1327:in block in compute_type' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activerecord-3.1.0/lib/active_record/base.rb:1325:ineach’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
activerecord-3.1.0/lib/active_record/base.rb:1325:in compute_type' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ activerecord-3.1.0/lib/active_record/reflection.rb:173:inklass’
from /Users/nopik/Warsztat/magic_multi_connections/lib/
magic_multi_connections/connected.rb:60:in block in create_class' from /Users/nopik/Warsztat/magic_multi_connections/lib/ magic_multi_connections/connected.rb:51:ineach’
from /Users/nopik/Warsztat/magic_multi_connections/lib/
magic_multi_connections/connected.rb:51:in create_class' from /Users/nopik/Warsztat/magic_multi_connections/lib/ magic_multi_connections/connected.rb:30:inconst_missing’
from (irb):1
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
railties-3.1.0/lib/rails/commands/console.rb:45:in start' from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/ railties-3.1.0/lib/rails/commands/console.rb:8:instart’
from /Users/nopik/.rvm/gems/ruby-1.9.2-p180@christmas/gems/
railties-3.1.0/lib/rails/commands.rb:40:in <top (required)>' from script/rails:6:inrequire’

I tried to dig into this, but it quicky goes down to ActiveRecord
internals, which I’m not familiar enough to solve it quickly.
Any hints?

2

As a old-school programmer I forgot, as usual, that nowadays visual
debuggers are around :wink: And RubyMine’s debugger was pretty good at
solving this task. Indeed, after few minutes I’ve found how to patch
things to get workable state.

Yesterday I’ve spend 1.5 hour wandering through sources without a
clue, today problem was solved in 10 minutes. If you still think that
RubyMine is too expensive, thinkg again :wink:

My temporary solution is at

though I consider it as dirty hack, not production code.
Rails 3.0 compatibility is broken now, most likely, too.

Will love to switch to official patch sooner or later.