get validations from model

ruby-on-rails validation activemodel

manzhikov · Oct 29, 2010 · Viewed 10.3k times · Source

How cat I get list of validations defined in model

Example:

class ModelName
  validates_presence_of :field_name
  validates_inclusion_of :sex, :in => %w(M F)
end

I need Hash like:

{:field_name => 'required', :sex => 'Must be in: M, F'}

Answer

You don't need a plugin for basic needs.

You can do this to get a hash of all validators.

ModelName.validators

If you want to get the validators for a specific field :

ModelName.validators_on(:attribute)