Undefined method 'subpods'

When trying to search for some queries I get the error: "'

': undefined method 'subpods' for nil:NilClass (NoMethorError)". My code is exactly the same as the code on the home page, with the single exception that the query is from user input, not predefined in the program. This error does not occur all of the time, and I haven't found any pattern to when it does occur.

[mkroman]

That's strange. So far I haven't experienced any issues.

Could you perhaps change the code to:

input = response["Input"] # Get the input interpretation pod.
result = response.find { |pod| pod.title == "Result" } # Get the result pod.

p response if input.nil? or result.nil?
puts "#{input.subpods[0].plaintext} = #{result.subpods[0].plaintext}"

And post the output here, when the error occurs?

[louismullie]

Same error on Ruby 2.2.0, everything works on 1.9.3

[alexishida]

Same error block (2 levels) in <main>': undefined methodsubpods' for nil:NilClass (NoMethodError)

[arnoldtonderaimarunda]

That happens when Wolfram Alpha does not return a result/subpod array for your request. You need to alter your query.