instance method `add_on_empty`

Ruby on Rails 4.1.16

Since v3.0.20 Last seen in v4.2.9

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9

Compare with:

add_on_empty(attributes, options = {})

Will add an error message to each of the attributes in attributes that is empty.

person.errors.add_on_empty(:name)
person.errors.messages
# => {:name=>["can't be empty"]}

Parameters

attributes req
options opt = {}

Source

# File activemodel/lib/active_model/errors.rb, line 307
    def add_on_empty(attributes, options = {})
      Array(attributes).each do |attribute|
        value = @base.send(:read_attribute_for_validation, attribute)
        is_empty = value.respond_to?(:empty?) ? value.empty? : false
        add(attribute, :empty, options) if value.nil? || is_empty
      end
    end

Defined in activemodel/lib/active_model/errors.rb line 307 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveModel::Errors

Signature

Parameters