I have a model named, Measurable, that stores many different types of of
measurements for different things. All the measurements can be represented
as a decimal, so my value column is of datatype decimal. My users though
wish to view and input these value is either integers or mixed numbers (ex:
31 1/8) as well, depending on the measurable_type. Right now I'm able to
convert the mixed number to a decimal value and store it into my database
as a proper decimal. But I'm trying to figure out how to convert it from a
decimal value to the mixed number I'm wanting to show the user in my form,
so they can make edits if necessary. Below I have the setter method I
made, but my attempts at creating a proper getter haven't work. I'm not
really sure how to go about it.
class Measurable < ActiveRecord::Base
# columns: id, unit_id, measurable_type_id, reliability_id, value,
created_at, updated_at
belongs_to :measurable_type
def value=(value)
# Has more than one value
if value.split(" ").size > 1
values = value.to_s.strip.split(" ") # split the mixed number to
whole number and fraction for conversion preparation
if values.size > 1
# a whole number and fraction was supplied
whole_number = values.first.to_i
fraction = values.last
numerator = values.last.split("/").first.to_d
denominator = values.last.split("/").last.to_d
value = whole_number + (numerator / denominator)
else
# a fraction wasn't specified
whole_number = values.first
value = whole_number
end
end
@value = value
super
end
end
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