class ActiveAdmin::Views::IndexAsTable::IndexTableFor


methods for quickly displaying items on the index page
Extend the default ActiveAdmin::Views::TableFor with some

def actions(options = {}, &block)

```

end
item 'Grant Admin', grant_admin_admin_user_path(admin_user)
actions defaults: false, dropdown: true, dropdown_name: 'Additional actions' do |admin_user|
# Custom actions without the defaults displayed in a Dropdown Menu.

end
item 'Grant Admin', grant_admin_admin_user_path(admin_user)
actions dropdown: true do |admin_user|
# Append some actions onto the end of the default actions displayed in a Dropdown Menu

end
item 'Grant Admin', grant_admin_admin_user_path(admin_user)
actions defaults: false do |admin_user|
# Custom actions without the defaults.

end
a 'Grant Admin', href: grant_admin_admin_user_path(admin_user)
actions do |admin_user|
# Append some actions onto the end of the default actions using arbre dsl.

end
item 'Grant User', grant_user_admin_user_path(admin_user)
item 'Grant Admin', grant_admin_admin_user_path(admin_user)
actions do |admin_user|
# Append some actions onto the end of the default actions.

actions name: 'A title!'
# Add default links with a custom column title (empty by default).

actions
# Add default links.
```ruby

Add links to perform actions. 
def actions(options = {}, &block)
  name          = options.delete(:name)     { '' }
  defaults      = options.delete(:defaults) { true }
  dropdown      = options.delete(:dropdown) { false }
  dropdown_name = options.delete(:dropdown_name) { I18n.t 'active_admin.dropdown_actions.button_label', default: 'Actions' }
  options[:class] ||= 'col-actions'
  column name, options do |resource|
    if dropdown
      dropdown_menu dropdown_name do
        defaults(resource) if defaults
        instance_exec(resource, &block) if block_given?
      end
    else
      table_actions do
        defaults(resource, css_class: :member_link) if defaults
        if block_given?
          block_result = instance_exec(resource, &block)
          text_node block_result unless block_result.is_a? Arbre::Element
        end
      end
    end
  end
end

def default_actions 

def default_actions
  raise '`default_actions` is no longer provided in ActiveAdmin 1.x. Use `actions` instead.'
end

def defaults(resource, options = {}) 

def defaults(resource, options = {})
  if controller.action_methods.include?('show') && authorized?(ActiveAdmin::Auth::READ, resource)
    item I18n.t('active_admin.view'), resource_path(resource), class: "view_link #{options[:css_class]}", title: I18n.t('active_admin.view')
  end
  if controller.action_methods.include?('edit') && authorized?(ActiveAdmin::Auth::UPDATE, resource)
    item I18n.t('active_admin.edit'), edit_resource_path(resource), class: "edit_link #{options[:css_class]}", title: I18n.t('active_admin.edit')
  end
  if controller.action_methods.include?('destroy') && authorized?(ActiveAdmin::Auth::DESTROY, resource)
    item I18n.t('active_admin.delete'), resource_path(resource), class: "delete_link #{options[:css_class]}", title: I18n.t('active_admin.delete'),
      method: :delete, data: {confirm: I18n.t('active_admin.delete_confirmation')}
  end
end

def id_column

Display a column for the id 
def id_column
  raise "#{resource_class.name} has no primary_key!" unless resource_class.primary_key
  column(resource_class.human_attribute_name(resource_class.primary_key), sortable: resource_class.primary_key) do |resource|
    if controller.action_methods.include?('show')
      link_to resource.id, resource_path(resource), class: "resource_id_link"
    elsif controller.action_methods.include?('edit')
      link_to resource.id, edit_resource_path(resource), class: "resource_id_link"
    else
      resource.id
    end
  end
end

def index_column(start_value = 1) 

def index_column(start_value = 1)
  column '#', class: 'col-index', sortable: false do |resource|
    @collection.offset_value + @collection.index(resource) + start_value
  end
end

def selectable_column

Display a column for checkbox 
def selectable_column
  return unless active_admin_config.batch_actions.any?
  column resource_selection_toggle_cell, class: 'col-selectable', sortable: false do |resource|
    resource_selection_cell resource
  end
end