[custom-validation-messages]

[bigforcegun]

Try to close this one - #100
Starts with #101

Changes

• add error_message param to validate methods
  • as it was in the documentation - supports String and Proc types
• rewrite current error messaging mechanism to method build_error_message
  • can be nil context - when we validate without key pattern
  • can be context with setting_key: setting_key, setting_value: setting_value when we validate with key pattern
• every current Validators have own default_error_message

Interface:

validate :enabled, :boolean, strict: true, error_message: 'You must use boolean types'
validate :count, :integer, strict: true, error_message: proc { |context|
                                                                  "Error with some key #{context[:setting_key]}"
                                                                }
 validate 'telegraf_url', error_message: message_proc do |value|
          value.is_a?(String)
        end

validate error_message: 'Error Message - global block' do
    settings.namespace.enabled.is_a?(Symbol)
end

validate by: :check_all, error_message: 'Error message - method call'

[DmitryDD]

hey @0exp could you please take a quick look at this PR?

[0exp]

yes :O

[DmitryDD]

:zhdun: