Custom setter method won't accept blank values in Ruby on Rails? -


i have class:

class project < activerecord::base    attr_accessible :hourly_rate    validates :hourly_rate, :numericality => { :greater_than => 0 },                            :allow_blank => true,                            :allow_nil => true    def hourly_rate     read_attribute(:hourly_rate_in_cents) / 100   end    def hourly_rate=(number)     write_attribute(:hourly_rate_in_cents, number.to_d * 100)   end  end

the problem setter method doesn't behave in way want it.

in form, when leave hourly_rate input field blank , hit update, 0 appears in input field again if magic , validation error: hourly rate must greater 0

can tell me i'm missing here? want field optional.

thanks help!

i imagine problem if leave field blank, params[:project][:hourly_rate] "". if @project.hourly_rate = "" @project.hourly_rate 0, not nil.

this because "".to_d 0. therefore write_attribute(:hourly_rate_in_cents, number.to_d * 100) write value 0 when number "".

def hourly_rate=(number)   hourly_rate_value = number.present? ? number.to_d * 100 : nil   write_attribute(:hourly_rate_in_cents, hourly_rate_value) end

should fix this.


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