module SimpleForm::Components::Errors

def error
  template.content_tag(error_tag, error_text, error_html_options) if object && errors.present?
end

def error_html_options
  html_options_for(:error, :error)
end

def error_tag
  options[:error_tag] || SimpleForm.error_tag
end

def error_text
  errors.to_sentence
end

def errors
  @errors ||= (errors_on_attribute + errors_on_association).compact
end

def errors_on_association
  reflection ? Array(object.errors[reflection.name]) : []
end

def errors_on_attribute
  Array(object.errors[attribute_name])
end