Sometimes i have ran into a situation where there was a need to validate a new record depending upon which method was used. For example I was capturing data for an event which had both domestic and international leads. There were different criteria for the two sets of data.
For eg: I needed to validate presence of state, cost center for US leads and ignore those for international leads.
So i needed to figure out separate ways to handle the validations. Here is how I implemented it.
I defined two methods in my model: usa_validation? and international_validation?
# validations only specific to usa leads attr_accessor :usa_validation def usa_validation? return usa_validation end def usa_validation=(value) @usa_validation = value end validates_presence_of :region, :if => :usa_validation? validates_presence_of :cost_center, :if => :usa_validation? # validations only specific to international leads attr_accessor :international_validation def international_validation? return international_validation end def usa_validation=(value) @usa_validation = value end validates_presence_of :country, :if => :international_validation?
In my controller i set the flag to true for US or international depending upon the case.
def capture_usa_lead @lead = Lead.new(params[:lead]) @lead.usa_validation = true if @lead.save #display message else render :layout => "lead", :partial => "usa_form" end end def capture_international_lead @lead = Lead.new(params[:lead]) @lead.international_validation = true if @lead.save #display message else render :layout => "lead", :partial => "international_form" end end