Use create_or_find_by to avoid race condition in Rails 6.0
It’s pretty common in Ruby on Rails to use find_or_create_by method when you want to create a new record if the record isn’t already existed: > User.find_or_create_by(username: "sikachu") User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."username" = ? LIMIT ? [["username", "sikachu"], ["LIMIT", 1]] (0.1ms) begin transaction User Create (1.9ms) INSERT INTO "users" ("username", "created
Add #create_or_find_by to lean on unique constraints by dhh · Pull Request #31989 · rails/rails
Attempts to create a record with the given attributes in a table that has a unique constraint on one or several of its columns. If a row already exists with one or several of these unique constraints, the exception such an insertion would normally raise is caught, and the existing record with those attributes is sought found using #find_by. This is similar to #find_or_create_by, but avoids the pro
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