Ruby-on-rails – Rails validation required numericality even though presence is not set to true

rubyruby-on-railsruby-on-rails-3

I'm trying to save a record which doesn't have one field set — which has a validate numericality in the models. Even though the presence is not required in the validation, it's still throwing an error that the field is not a number.

Validation:

validates :network_id,    :numericality => true

Code to that is saving model:

networks.each do |network|
  network.url = network.raw_data.link
  network.save!
end

Error:

Validation failed: Network is not a number

Best Answer

validates :network_id, :numericality => true, :allow_nil => true

Related Solutions

Ruby-on-rails – Fully custom validation error message with Rails

Now, the accepted way to set the humanized names and custom error messages is to use locales.

# config/locales/en.yml
en:
  activerecord:
    attributes:
      user:
        email: "E-mail address"
    errors:
      models:
        user:
          attributes:
            email:
              blank: "is required"

Now the humanized name and the presence validation message for the "email" attribute have been changed.

Validation messages can be set for a specific model+attribute, model, attribute, or globally.

Rails 3: validates :presence => true vs validates_presence_of

All those validates_whatever_of :attr macros do is call validates :attr, :whatever => true.

The problem is you are using validate and not validates.

Best Answer

Related Solutions

Ruby-on-rails – Fully custom validation error message with Rails

Rails 3: validates :presence => true vs validates_presence_of

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