CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-4strong-parameters
user601836
user601836

Reputation: 3235

Rails4: Optional parameters in model

I have a Rails4 model (my_model) which may or may not have an attribute. I don't want to save the attribute on my db after I call:

my_model.save

or

my_model.create

but I would like to have access to the value of this possible attribute (or nil if it doesn't exist) after doing:

my_model.new(attribute: possible_attribute)

Is there a way to achieve this result?

Upvotes: 0

Views: 103

Answers (1)

usha
usha

Reputation: 29369

Define the possible_attribute as attr_accessor and attr_accessible

class MyModel
  attr_accessor :possible_attribute
  attr_accessible :possible_attribute
end

Now you can do

m = MyModel.new(:possible_attribute => "value")
m.possible_attribute #value

And

m.save

will not save possible_attribute

Upvotes: 1

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