Rails core - Mar 2013 - undefined method 'sanitize_limit' for #<ActiveRecord::Relation:0x2aaaad35d720>

I am trying to upgrate rails from 3.0 to 3.1, while updating rails version 
I am getting following error

rake aborted!
undefined method `sanitize_limit'' for 
#<ActiveRecord::Relation:0x2aaaad35d720>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:460:in
`method_missing''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:208:in
`build_arel''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:196:in
`arel''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:112:in
`to_a''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:376:in
`find_first''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:122:in
`first''

Error is occurred at the execution of following statement:
test = where(search_column_name => attributes[search_column_name]).first

I found following solution on internet:
https://github.com/rails/rails/issues/1974

Hence updated to:
test = where(search_column_name => 
attributes[search_column_name]).all.to_a.first

...and this statement started working fine.

But, find_by_name() is still failing with the same error.
for eg. the below statement is not always working.
test_lookup = find_by_identifier(lookup_str) || find_by_name(lookup_str) || 
find_by_abbreviation(lookup_str)

statement is called under a function, defined in a model:
def self.lookup(lookup_str)
  return nil if lookup_str.blank?
  test_lookup = find_by_identifier(lookup_str) || find_by_name(lookup_str) 
|| find_by_abbreviation(lookup_str)
  return test_lookup if test_lookup.present?
end

It throws following error:
rake aborted!
undefined method `sanitize_limit'' for 
#<ActiveRecord::Relation:0x2aaaacf14010>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:460:in
`method_missing''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:208:in
`build_arel''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:196:in
`arel''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:112:in
`to_a''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:376:in
`find_first''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:122:in
`first''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:263:in
`send''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:263:in
`find_by_attributes''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/base.rb:1074:in
`send''
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/base.rb:1074:in
`method_missing''

What should be the alternative for find_by_name() [i.e. 
find_by_attribute()]???

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On Thursday, March 28, 2013 at 5:50 AM, Tanmay Baid wrote:
> I am trying to upgrate rails from 3.0 to 3.1, while updating rails version
I am getting following error
> 
> rake aborted!
> undefined method `sanitize_limit'' for
#<ActiveRecord::Relation:0x2aaaad35d720>
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:460:in
`method_missing''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:208:in
`build_arel''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:196:in
`arel''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:112:in
`to_a''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:376:in
`find_first''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:122:in
`first''
> 
> Error is occurred at the execution of following statement:
> test = where(search_column_name => attributes[search_column_name]).first
> 
> I found following solution on internet:
> https://github.com/rails/rails/issues/1974
> 
> Hence updated to:
> test = where(search_column_name =>
attributes[search_column_name]).all.to_a.first
> 
> ...and this statement started working fine.
> 
> But, find_by_name() is still failing with the same error.
> for eg. the below statement is not always working.
> test_lookup = find_by_identifier(lookup_str) || find_by_name(lookup_str) ||
find_by_abbreviation(lookup_str)
> 
> statement is called under a function, defined in a model:
> def self.lookup(lookup_str)
>   return nil if lookup_str.blank?
>   test_lookup = find_by_identifier(lookup_str) || find_by_name(lookup_str)
|| find_by_abbreviation(lookup_str)
>   return test_lookup if test_lookup.present?
> end
> 
> It throws following error:
> rake aborted!
> undefined method `sanitize_limit'' for
#<ActiveRecord::Relation:0x2aaaacf14010>
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:460:in
`method_missing''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:208:in
`build_arel''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/query_methods.rb:196:in
`arel''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:112:in
`to_a''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:376:in
`find_first''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:122:in
`first''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:263:in
`send''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation/finder_methods.rb:263:in
`find_by_attributes''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/base.rb:1074:in
`send''
>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/base.rb:1074:in
`method_missing''
> 
> What should be the alternative for find_by_name() [i.e.
find_by_attribute()]???
> -- 
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"Ruby on Rails: Core" group.
> To unsubscribe from this group and stop receiving emails from it, send an
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>  
>  
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For more options, visit https://groups.google.com/groups/opt_out.