Is Rails find deprecated?

Question

Is Rails find method deprecated?

In the olden days, find(1) was the preferred way to find by id.

Is it better to use find_by(id:1) instead of find(1)?

Answer 1

Neither method is deprecated (as far as I know). The difference between find and find_by() is what they return when a record does not exist. If a record with an ID of 23 does not exist, this is what you get:

Model.find(23)
=> ActiveRecord::RecordNotFound: Couldn't find Model with 'id'=23

Or

Model.find_by(id: 23)
=> nil

Using find_by is more forgiving if you're making queries where a non-existent record is possible because you get a nil value rather than an exception.

Answer 2

Probably you are referring to the deprecation of ActiveRecord::Base#find like find(:first) and find(:all) that are deprecated in favor of first and all methods.

Support for this methods has been removed from rails 3.2.

The method you've used (ActiveRecord::FinderMethods#find) is not deprecated .