jam-cloud/web/app/helpers/errors_helper.rb

module ErrorsHelper

  def simple_error(field, error_msg)
    {"errors" => {field => [error_msg]}}
  end

  def errors_for(object)
    if object.errors.any?
      content_tag(:div, class: 'card text-white bg-danger mb-3') do
        concat(content_tag(:div, class: 'card-header') do
          concat(content_tag(:h4) do
            concat "The form contains #{pluralize(object.errors.count, 'error')}:"
          end)
        end)
        concat(content_tag(:div, class: 'card-body') do
          concat(content_tag(:ul) do
            object.errors.full_messages.each do |msg|
              concat content_tag(:li, msg)
            end
          end)
        end)
      end
    end
  end


end