---
title: "Suppress save events in Rails 5"
description: "Rails 5 introduces way to suppress save events on a model"
canonical_url: "https://www.bigbinary.com/blog/suppress-save-events-in-rails-5"
markdown_url: "https://www.bigbinary.com/blog/suppress-save-events-in-rails-5.md"
---

# Suppress save events in Rails 5

Rails 5 introduces way to suppress save events on a model

- Author: Abhishek Jain
- Published: March 11, 2016
- Categories: Rails 5, Rails

Rails 5 added [suppress](https://github.com/rails/rails/pull/18910) method which
is used to prevent the receiver from being saved during the given block.

## Use case for suppress method

Let's say, we have an E-commerce application, which has many products. Whenever
new product is launched then subscribed customers are notified about it.

```ruby

class Product < ApplicationRecord
  has_many :notifications
  belongs_to :seller

  after_save :send_notification

  def launch!
    update_attributes!(launched: true)
  end

  private

  def send_notification
    notifications.create(message: 'New product Launched', seller: seller)
  end
end

class Notification < ApplicationRecord
  belongs_to :product
  belongs_to :seller

  after_create :send_notifications

  private

  def send_notifications
    # Sends notification about product to customers.
  end
end

class Seller < ApplicationRecord
  has_many :products
end

```

This creates a notification record every time we launch a product.

```ruby

>> Notification.count
=> 0

>> seller = Seller.last
=> <Seller id: 6, name: "John">

>> product = seller.products.create(name: 'baseball hat')
=> <Product id: 4, name: "baseball hat", seller_id: 6>

>> product.launch!

>> Notification.count
=> 1

```

Now, we have a situation where we need to launch a product but we don't want to
send notifications about it.

Before Rails 5, this was possible only by adding more conditions.

## ActiveRecord::Base.Suppress in Rails 5

In Rails 5, we can use `ActiveRecord::Base.suppress` method to suppress creating
of notifications as shown below.

```ruby

class Product < ApplicationRecord
  def launch_without_notifications
    Notification.suppress do
      launch!
    end
  end
end

>> Notification.count
=> 0

>> product = Product.create!(name: 'tennis hat')
=> <Event id: 1, name: "tennis hat">

>> product.launch_without_notifications

>> Notification.count
=> 0

```

As we can see, no new notifications were created when product is launched inside
`Notification.suppress` block.

Checkout [the pull request](https://github.com/rails/rails/pull/18910) to gain
better understanding of how `suppress` works.

## Links

- [Human page](https://www.bigbinary.com/blog/suppress-save-events-in-rails-5)