https://github.com/iguchi1124/counter_cache-rails

ActiveRecord child records counter caching on your rails application cache store.
https://github.com/iguchi1124/counter_cache-rails

Last synced: 17 days ago
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ActiveRecord child records counter caching on your rails application cache store.

• Host: GitHub
• URL: https://github.com/iguchi1124/counter_cache-rails
• Owner: iguchi1124
• License: mit
• Created: 2016-09-13T17:20:22.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2018-05-04T03:47:45.000Z (over 6 years ago)
• Last Synced: 2024-10-05T08:17:47.319Z (about 1 month ago)
• Language: Ruby
• Homepage:
• Size: 43 KB
• Stars: 9
• Watchers: 4
• Forks: 2
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: MIT-LICENSE

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README

        
# CounterCacheRails

ActiveRecord child records counter caching on your rails application cache store.

## Installation

Add this line to your rails application's Gemfile:

```ruby

gem 'counter_cache-rails'

```

## Usage

```rb

class Post

  has_many :comments

  counter_cache :comments,

                if: ->(comment) { comment.visible? },

                scope: ->(comments) { comments.visible }

  after_update_comments_count do

    # you can use callbacks on update counter cache

  end

  after_increment_comments_count do

    Redis.current.increment('service:total:comments')

  end

  after_decrement_comments_count do

    Redis.current.decrement('service:total:comments')

  end

  after_cache_comments_count do

    update(comments_count: comments_count)

  end

end

class Comment

  belong_to :post

end

post = Post.create(title: 'sample title', body: 'post body')

post.comments_count # => 0

post.comments.create(body: 'comment body')

post.comments_count # => 1

post.comments_count(force: true) # force reload counter cache

```

## License

The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).