Ruby on Rails

David Mr. wrote in post #995865:
> Colin Law wrote in post #995808:
>> On 29 April 2011 17:15, David Mr. <lists@ruby-forum.com> wrote:
>>>
>>> Just to see if that was the cause of another error. Here is the error
>>> that happens when it is not commented out:
>>>
>>> NoMethodError in SearchesController#create
>>>
>>> undefined method `each' for true:TrueClass
>>>
>>> /home/brad/Documents/blogazer/app/models/search.rb:201:in
>>> `set_from_sources'
>>> /home/brad/Documents/blogazer/app/models/search.rb:107:in `execute'
>>
>> I think you need to look at the line above in search.rb. It suggests
>> you are calling each for something that is not a collection but has
>> the value true.
>>
>> Colin
>
> Hmmm...
> Here is the code from around line 201 in search.rb:
>
> def set_from_sources(sources)
> final = Set.new
> sources.each do |source|
> p = Page.find_by_id source
> h = YAML.load(p.data)
> final.merge h.keys
> end
> final
> end
>
> Here is line 107 in search.rb:
> gamma[:D] = set_from_sources(gamma[:C]) - (txv[:a] + txv[:b])
>
> If sources is empty from the form data not getting passed to it or
> sources getting assigned invalid data could that be causing the error?
> Please ignore my rails stupidity. Thanks

Just found out if I leave the form fields empty and hit submit, the
error changes to:

undefined method `-' for true:TrueClass

Does this help narrow things down?
Thanks

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