select2_tags.md

Select2

Tagging

To enable select2 with tags functionality you need to do the following:

f.input :names, as: :tags

You can load previous created tags using collection option passing an array of strings like this:

f.input :names, as: :tags, collection: ['Julio', 'Emilio', 'Leandro']

Tagging with Active Record collections

To use tagging functionality with Active Record collections you need to do something like this:

class Event < ActiveRecord::Base
  has_and_belongs_to_many :performers
end

class Performer < ActiveRecord::Base
  has_and_belongs_to_many :events
end

So, in the ActiveAdmin's Event form, you can add:

f.input :performer_ids, as: :tags, collection: Performer.all, display_name: :full_name

Remember: the input name must be: performer_ids not performers and you need to add to permit_params the performer_ids: [] key.

Options

• display_name: (optional) You can pass an optional display_name to set the attribute (or method) to show results on the select. It defaults to: name
• value: (optional) You can pass an optional value to set the attribute (or method) to use when an item is selected. It defaults to: id
• width: (optional) You can set the select input width (px or %).