Ruby on Rails

On Wednesday, 19 August 2015 20:20:59 UTC-5, Ruby-Forum.com User wrote:

Hi,
I am new to ruby on rails development. Please excuse me if my question
is too obvious. I am trying to upgrade from rails 3.0 to 3.2. I am stuck
at a point. I am running into this following error.

INTERNAL ERROR!!! undefined method `abstract_class?' for
#<Class:0x007f8692ac2450>
  /Users/CRalladoddi/.rvm/gems/ruby-1.9.3-p551/gems/attr_encrypted-1.2.1/lib/attr_encrypted.rb:241:in
`method_missing'
  /Users/CRalladoddi/.rvm/gems/ruby-1.9.3-p551/gems/activerecord-3.2.13/lib/active_record/dynamic_matchers.rb:55:in
`method_missing'
  /Users/CRalladoddi/.rvm/gems/ruby-1.9.3-p551/gems/attr_encrypted-1.2.1/lib/attr_encrypted/adapters/active_record.rb:50:in
`method_missing_with_attr_encrypted'
  /Users/CRalladoddi/.rvm/gems/ruby-1.9.3-p551/gems/activerecord-3.2.13/lib/active_record/base.rb:421:in
`inspect'

What I found is that, the method 'abstract_class?' has been moved from
base.rb to inheritance.rb in rails 3.2.
I was actually trying to use execute the following statement when this
error happened.
ActiveRecord::Base.connection.column_exists? klass.table_name, :user_id

Any ideas on work arounds

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