Attribute name showing on Devise Error

Question

I'm trying to customize my devise error messages however the attribute name is always being included on the message.

I've already changed my en.yml file:

en:
  activerecord:
    errors:
      models:
        user:
          attributes:
            password:
              blank: "Error"
      full_messages:
        format: "%{message}"

devise_helper.rb

module DeviseHelper
  def devise_error_messages!
    return "" if resource.errors.empty?

    messages = resource.errors.full_messages.map { |msg| content_tag(:li, msg) }.join
    sentence = I18n.t("errors.messages.not_saved",
                      count: resource.errors.count,
                      resource: resource.class.model_name.human.downcase)

    html = <<-HTML
      <div id="error_explanation">
      <h2>#{sentence}</h2>
      <ul>#{messages}</ul>
      </div>
      HTML
    html.html_safe
  end
end

So for example on the code above the error message that displays is "Password Error" when I only wanted to display "Error"

Answer 1

You should use

en:
  errors:
    format: "%{message}"

Answer 2

You are calling full_messages method in the overridden devise_error_messages! of your devise helper. full_messages method prepends attribute name to the validation error message.

Replace

messages = resource.errors.full_messages.map { |msg| content_tag(:li, msg) }.join

with

messages = resource.errors.messages.map { |attr,msg| content_tag(:li, msg.join(', ')) }.join

See my answer for this SO question to get a better idea.