Bulk update attribute on multiple models in ActiveRecord?
activerecord, ruby-on-rails
Solution
I believe you are looking for update_all.
In your example, you'd rewrite it to be something like
Post.update_all("privacy = 'private'", ["user_id = ?", user.id])
Or as @jenjenut233 points out
user.posts.update_all("privacy = 'private'")
Problem
I have a simple `has_many` association, and I want to change an attribute from `public` to `private` the associated object. What's the best way to do this: ``` class User < ActiveRecord::Base has_many :posts end class Post < ActiveRecord::Base belongs_to :user end user = User.first #=> #<User...> user.posts.count #=> 100 # something like this: user.posts.bulk_update_attribute("privacy", "private") #=> 1 DB call ```