rails5でacts-as-taggable-onを使う手順

gemをインストール

Gemfile

gem 'acts-as-taggable-on', :git => 'https://github.com/mbleigh/acts-as-taggable-on'

$ bundle install

タグ用テーブルを作成

$ rake acts_as_taggable_on_engine:install:migrations

$ rails db:migrate

Model

app/models/entry.rb

class Entry < ApplicationRecord
  acts_as_taggable_on :job
  acts_as_taggable
end

Controller

app/controllers/entries_controller.rb

class EntriesController < ApplicationController
  def entry_params
    params.require(:entry).permit(:job_list)
  end
end

View

edit.html.erb

<%= f.radio_button :job_list %>
<%= f.label :job_list %>

タグの一覧を表示する方法

Model

app/models/model.rb

class Book < ApplicationRecord
  acts_as_taggable_on :tag
  acts_as_taggable
end

Controller

app/controllers/home_controller.rb

class HomeController < ApplicationController
  def index
    @tags = Book.all_tags
  end
end

共通箇所（サイドナビなど）でタグの一覧を表示する方法

Controller

app/controllers/concerns/common.rb

  def list
    @taglist = ActsAsTaggableOn::Tag.for_context(:tags)
    @categorylist = ActsAsTaggableOn::Tag.for_context(:categories)
  end