Searching and comparing ActiveRecord attributes to find largest value
- by NS
I have a model that would look something like:
my_diet = Diet.new
my_diet.food_type_1 = "beef"
my_diet.food_type_1_percentage = 40
my_diet.food_type_2 = "carrots"
my_diet.food_type_2_percentage = 50
my_diet.food_type_3 = "beans"
my_diet.food_type_3_percentage = 5
my_diet.food_type_4 = "chicken"
my_diet.food_type_4_percentage = 5
I need to find which food_type has the highest percentage. So far I've tried creating a hash out of the attibutes and percentages then sorting the hash (see below) but it feels like there must be a cleaner way to do it.
food_type_percentages = { :food_type_1 => my_diet.foo_type_percentage_1_percentage.nil? ? 0 : my_dient.food_type_1_percentage,
:food_type_2 => my_diet.foo_type_percentage_2_percentage.nil? ? 0 : my_dient.food_type_2_percentage,
:food_type_3 => my_diet.foo_type_percentage_3_percentage.nil? ? 0 : my_dient.food_type_3_percentage,
:food_type_4 => my_diet.foo_type_percentage_4_percentage.nil? ? 0 : my_dient.food_type_4_percentage
}
food_type_percentages.sort {|a,b| a[1]<=>b[1]}.last
Any ideas?
Thanks!
