using COPY FROM in a Rails app on Heroku with the Postgresql backend

Question

I want to give users the option of uploading files in my Ruby on Rails 3.2 application, with the data going into the db. I wanted to use the COPY FROM command s

Answer 1

You can use the gem https://github.com/diogob/postgres-copy Assuming data is an IO object.

User.copy_from data, columns: [:name, :taxon_id, :updated_at, :created_at]

Or using the path to the uploaded file directly:

User.copy_from "/tmp/uploaded_file.csv", columns: [:name, :taxon_id, :updated_at, :created_at]