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I have one question:
A column called shoe_id on my table, I’d like that id is automatically generated when I register a product, and I would also like it to be in the format without dividers from the creation date, for example:
what I want to implement in the Browser happens when in the console I do
shoes = Shoe.new(:shoe_id => shoes.created_at.to_formatted_s(:number))
shoes.save
how can I do this?
1
how to do this is using callbacks , where in the object creation action (after_create), you will set this value to the field shoe_id, so for example:
class Shoe < ActiveRecord::Base
after_create :generate_shoe_id
def generate_shoe_id
self.update(shoe_id: created_at.to_formatted_s(:number))
end
end
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I thought about using before_create and changing the way to get the current creation date, such as joining Time.now with Data.now for example, or in the latter cases, instead of using to_formatted_s(:number), using . gsub(/ D/, '), however, I believe that in the last line it will have to do the code as follows: [lself.update(shoe_id: created_at.to_s.gsub(/ D/, ')] ...
– Andre Leoni