Route to action of controller - ruby-on-rails

Question

Previous i used:
data: {autocomplete_source: categories_path} %>
To point to the action index in categories controller.All worked fine!
Now i created an new action in categories controller
def search
#categories = Category.order(:name).where("name like ?", "%#{params[:term]}%")
render json: #categories.map(&:name)
end
And tried to point to that action:
data: {autocomplete_source: search_categories_path} %>
But i get the error:
undefined local variable or method `search_categories_path' for #<#<Class:0x51844c8>:0x5375820>
What did i wrong? Thanks!
My routes:
products GET /products(.:format) products#index
POST /products(.:format) products#create
new_product GET /products/new(.:format) products#new
edit_product GET /products/:id/edit(.:format) products#edit
product GET /products/:id(.:format) products#show
PUT /products/:id(.:format) products#update
DELETE /products/:id(.:format) products#destroy
categories GET /categories(.:format) categories#index
POST /categories(.:format) categories#create
new_category GET /categories/new(.:format) categories#new
edit_category GET /categories/:id/edit(.:format) categories#edit
category GET /categories/:id(.:format) categories#show
PUT /categories/:id(.:format) categories#update
DELETE /categories/:id(.:format) categories#destroy
Routes:
Autorails::Application.routes.draw do
resources :products
resources :categories do
collection do
:search
end
end

Answer 1

Check rake routes if that route really exists under that name.
For more information see http://guides.rubyonrails.org/routing.html#path-and-url-helpers

Answer 2

You should have something like this in your routes.rb:
resources :categories do
collection do
get :search
end
end

Answer 3

You should do something like this
resources :categories do
collection do
get :search
end
end