Module: ActiveModel::Validations::HelperMethods

Defined in:
lib/simple_enum/validation.rb

Instance Method Summary collapse

Instance Method Details

#validates_as_enum(*attr_names) ⇒ Object

Validates an as_enum field based on the value of it’s column.

Model:

class User < ActiveRecord::Base
  as_enum :gender, [ :male, :female ]
  validates_as_enum :gender
end

View:

<%= select(:user, :gender, User.genders.keys) %>

Configuration options:

  • :message - A custom error message (default: is [:activerecord, :errors, :messages, :invalid_enum]).

  • :on - Specifies when this validation is active (default is always, other options :create, :update).

  • :if - Specifies a method, proc or string to call to determine if the validation should occur (e.g. :if => :allow_validation, or :if => Proc.new { |user| user.signup_step > 2 }). The method, proc or string should return or evaluate to a true or false value.

  • :unless - Specifies a method, proc or string to call to determine if the validation should not occur (e.g. :unless => :skip_validation, or :unless => Proc.new { |user| user.signup_step <= 2 }). The method, proc or string should return or evaluate to a true or false value.



51
52
53
 
# File 'lib/simple_enum/validation.rb', line 51

def validates_as_enum(*attr_names)
  validates_with AsEnumValidator, _merge_attributes(attr_names)
end