Hi guys,
trying to do something like obj[:id] when obj is nil, returns an error.
Things are even more complicated when you try to work with nested hashes.
To access something like hash[:data][:details][:id] you need to write
if hash.has_key?(:data) && hash[:data].has_key?(:details)
return hash[:data][:details][:id]
end
In my code I monkey-patched the NilClass so that the nested accesses always
return nil if they do not exists instead of throwing an error. It
simplified a lot my code, which is now way cleaner. The patch was something
like
class NilClass
def [](*keys)
nil
end
end
I thought I would bring this up to your attention. It may be worth
introducing it in Rails as default.
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