Active Model ValidationError

Raised by validate! when the model is invalid. Use the model method to retrieve the record which did not validate.

begin
  complex_operation_that_internally_calls_validate!
rescue ActiveModel::ValidationError => invalid
  puts invalid.model.errors
end
Methods
N
Attributes
[R] model
Class Public methods
new(model)

Source: show | on GitHub 

# File activemodel/lib/active_model/validations.rb, line 428
def initialize(model)
  @model = model
  errors = @model.errors.full_messages.join(", ")
  super(I18n.t(:"#{@model.class.i18n_scope}.errors.messages.model_invalid", errors: errors, default: :"errors.messages.model_invalid"))
end