I'm trying to make a facet from a string column that might contain
NULL. When it gets to the translate method, it tries to call to_crc32
on nil:
NoMethodError: undefined method `to_crc32' for nil:NilClass
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/gems/
activesupport-3.0.6/lib/active_support/whiny_nil.rb:48:in
`method_missing'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet.rb:106:in `block in
translate'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet.rb:105:in `each'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet.rb:105:in `detect'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet.rb:105:in `translate'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet.rb:81:in `value'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:127:in `block
in add_from_results'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/search.rb:322:in `block in
each_with_match'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/search.rb:321:in `each'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/search.rb:321:in
`each_with_index'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/search.rb:321:in
`each_with_match'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:126:in
`add_from_results'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:52:in `block
in populate'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:49:in `each'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:49:in
`each_with_index'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:49:in
`populate'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/facet_search.rb:13:in
`initialize'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/search_methods.rb:422:in `new'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/bundler/gems/thinking-
sphinx-f81441e28813/lib/thinking_sphinx/search_methods.rb:422:in
`facets'
from (irb):1
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.6/
lib/rails/commands/console.rb:44:in `start'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.6/
lib/rails/commands/console.rb:8:in `start'
from /Users/alexchee/.rvm/gems/ruby-1.9.2-p136/gems/railties-3.0.6/
lib/rails/commands.rb:23:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'irb(main):002:0>
So I'm trying to get around this by changing the translate method to
only collect if the item is not nil and the crc32 matches, like:
def translate(object, attribute_value)
objects = source_objects(object)
return nil if objects.nil? || objects.empty?
if objects.length > 1
objects.collect { |item| item.send(column.__name) }.detect { |
item|
!item.nil? && item.to_crc32 == attribute_value
}
else
method = value_source || column.__name
objects.first.send(method)
end
end
Does anyone know if this sounds like reasonable solution for me?
Thanks,
-Alex
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