ActiveAdmin: Custom MetaSearch Filter

Recently, I had the need to create a custom ActiveAdmin filter for a site I was working on. I couldn’t find much information on the subject, but after digging around, it turns out that it’s pretty easy.

Here are my (admittedly contrived) models. You can see that a User belongs to an Account and an Account belongs to a Group. For this example, let’s say I want a filter in ActiveAdmin on the User resource that lists all the Groups.

class Group < ActiveRecord::Base has_many :accounts end class Account < ActiveRecord::Base has_many :users belongs_to :group end class User < ActiveRecord::Base belongs_to :account end

Here’s my simplified ActiveAdmin resource, with the added filter.

ActiveAdmin.register User do index do column :id column :name column :email default_actions end filter :id filter :name filter :email filter :group, as: :select, collection: Group.order(:name) end

To hook it up to the model, I just need to add a scope and a call to the built-in MetaSearch method search_methods.

class User < ActiveRecord::Base belongs_to :account search_methods :address # tells meta_search to use this method as a filter scope :group, ->(group_id) { joins(:account => :group).where("groups.id = ?", group_id) } end

NoMethodError

raise "a blog about rails, javascript, and other stuff"

ActiveAdmin: Custom MetaSearch Filter

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