I would like to know if there is a Rails way to create multiple records by passing in an array of attributes.
For instance, instead of
MyModel.create
At the time the question was asked ActiveRecord did not have any built-in features to efficiently insert multiple records at once. As of today Rails 6 is the current stable release and it comes with Model#insert_all! which is a method for bulk inserting.
You'll find the documentation for it here https://edgeapi.rubyonrails.org/classes/ActiveRecord/Persistence/ClassMethods.html#method-i-insert_all-21
It is worth to mention that Rails 6 also implements Model#upsert_all! which efficiently inserts or updates in case the the record exists.