I have also noted that with @breakdown[2] it doesn't work even though
I know I have a "P" in there!
>> @breakdown[2]
=> #<Treatlist:0x2357a1c @items=[
#<Treatlistitem:0x2351b30 @longname="Back Massage", @spend=10.0,
@prodtreat="T", @numsold=1, @unitcost=10.0>,
#<Treatlistitem:0x234f9fc @longname="Hopi Ear Candles", @spend=10.0,
@prodtreat="T", @numsold=1, @unitcost=10.0>,
#<Treatlistitem:0x234cf90 @longname="Eye Brow Shape", @spend=10.0,
@prodtreat="T", @numsold=1, @unitcost=10.0>,
#<Treatlistitem:0x2349db8 @longname="Full Leg Wax DSS", @spend=18.0,
@prodtreat="T", @numsold=2, @unitcost=10.0>,
#<Treatlistitem:0x23476bc @longname="Bridal Make Up", @spend=10.0,
@prodtreat="T", @numsold=1, @unitcost=10.0>,
#<Treatlistitem:0x2342fcc @longname="Collin Face Powder", @spend=10.0,
@prodtreat="P", @numsold=1, @unitcost=10.0>]>
>> @breakdown[2].items.sum{|item| item.spend if item.prodtreat == "P"}
NoMethodError: You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.+
from /Library/Ruby/Gems/1.8/gems/activesupport-2.2.2/lib/
active_support/core_ext/enumerable.rb:63:in `sum'
from (irb):68:in `inject'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.2.2/lib/
active_support/core_ext/enumerable.rb:63:in `each'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.2.2/lib/
active_support/core_ext/enumerable.rb:63:in `inject'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.2.2/lib/
active_support/core_ext/enumerable.rb:63:in `sum'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.2.2/lib/
active_support/core_ext/enumerable.rb:61:in `sum'
from (irb):68
This is confusing me mightily!
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