Module: Sortabl::ActionViewExtensions::SortablHelper

Defined in:
lib/sortabl/sortabl_helper.rb

Instance Method Summary collapse

Instance Method Details

Renders sortabl link



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# File 'lib/sortabl/sortabl_helper.rb', line 7

def sortabl_link(name = nil, attribute = nil, html_options = nil, &block)
  html_options, attribute, name = attribute, name, block if block_given?
  html_options = html_options || {}

  # Support custom sort_param
  # If sort_param isn't given, fall back to :sortabl as param
  sort_param = html_options[:sort_param] || :sortabl
  html_options.except!(:sort_param)

  # Remove current sortabl param from url and add default sortabl param
  sortabl_params = params.permit!.except(sort_param)
  sortabl_params[sort_param] = "#{attribute}_asc"

  # If there was already a sortabl param, invert direction or remove sortabl param
  if params[sort_param].present?
    if attribute.to_s == params[sort_param].gsub(/(_asc$|_desc$)/, '')
      sort_direction = params[sort_param].gsub(/^((?!desc$|asc$).)*/, '')

      sortabl_params[sort_param] = "#{attribute}_desc"  if sort_direction == 'asc'
      sortabl_params[sort_param] = nil                  if sort_direction == 'desc'
    end
  end

  # Add sortabl html class to html_options
  html_options[:class] = 'sortabl' + (sort_direction.present? ? " #{sort_direction}" : "") + (html_options[:class].present? ? " #{html_options[:class]}" : "")

  # Support remote true
  html_options.except!(:remote).merge!({'data-remote': 'true'}) if html_options[:remote]

  # Generate url from params
  url = url_for(sortabl_params)
  html_options["href".freeze] ||= url

  content_tag("a".freeze, name || url, html_options, &block)
end