Module: ActiveAdmin::ViewHelpers::DisplayHelper

Included in:
ActiveAdmin::ViewHelpers
Defined in:
lib/active_admin/view_helpers/display_helper.rb

Constant Summary collapse

DISPLAY_NAME_FALLBACK = 
->{
  name, klass = "", self.class
  name << klass.model_name.human         if klass.respond_to? :model_name
  name << " ##{send(klass.primary_key)}" if klass.respond_to? :primary_key
  name.present? ? name : to_s
}

Instance Method Summary collapse

Instance Method Details

#association_methods_for(resource) ⇒ Object 



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# 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) ⇒ Object

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.



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# 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) ⇒ Object

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.



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# 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) ⇒ Object

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



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# 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