module ActiveAdmin::ViewHelpers::DisplayHelper

Constants

DISPLAY_NAME_FALLBACK

Public Instance Methods

association_methods_for(resource) click to toggle source
# File lib/active_admin/view_helpers/display_helper.rb, line 38
def association_methods_for(resource)
  return [] unless resource.class.respond_to? :reflect_on_all_associations
  resource.class.reflect_on_all_associations.map(&:name)
end
display_name(resource) click to toggle source

Attempts to call any known display name methods on the resource. See the setting in ‘application.rb` for the list of methods and their priority.

# File lib/active_admin/view_helpers/display_helper.rb, line 17
def display_name(resource)
  render_in_context resource, display_name_method_for(resource) if resource
end
display_name_method_for(resource) click to toggle source

Looks up and caches the first available display name method. To prevent conflicts, we exclude any methods that happen to be associations. If no methods are available and we’re about to use the Kernel’s ‘to_s`, provide our own.

# File lib/active_admin/view_helpers/display_helper.rb, line 24
def display_name_method_for(resource)
  @@display_name_methods_cache ||= {}
  @@display_name_methods_cache[resource.class] ||= begin
    methods = active_admin_application.display_name_methods - association_methods_for(resource)
    method  = methods.detect{ |method| resource.respond_to? method }

    if method != :to_s || resource.method(method).source_location
      method
    else
      DISPLAY_NAME_FALLBACK
    end
  end
end
pretty_format(object) click to toggle source

Return a pretty string for any object Date Time are formatted via localize with format: :long ActiveRecord and Mongoid objects are formatted via auto_link We attempt to display_name of any other objects

# File lib/active_admin/view_helpers/display_helper.rb, line 47
def pretty_format(object)
  case object
  when String, Numeric, Arbre::Element
    object.to_s
  when Date, Time
    localize(object, format: :long)
  when ->(obj){defined?(::ActiveRecord) && obj.is_a?(ActiveRecord::Base)}
    auto_link(object)
  when ->(obj){defined?(::Mongoid) && obj.class.included_modules.include?(Mongoid::Document)}
    auto_link(object)
  else
    display_name(object)
  end
end