Load local file during heroku rake task

heroku local
heroku procfile
heroku run rake db:migrate
heroku cli
heroku pg:reset
heroku run rake db:seed
heroku login
heroku run bash

I have an import utility I'd like to use for creating records on heroku.

I want to use that to import data from a file on my development machine without having to check the file into the repository. Is there a way to do this with a rake task or the heroku gem?

I could upload the file in a web form which could time out, or I could store the file on S3, but that seems rather excessive.

Any easy way to do this?

You can read from standard in on your machine.

heroku run rake whatever <./file

Running Rake Commands, You can run Rake tasks within the remote app environment using the run.1 (in / home/slugs/41913_06f36ef_ab3a/mnt) Current version: 20081118092504 tasks, and pass environment variables just as you would locally. Not all Rake features are supported on Heroku. The following is a list of known limitations: Rake tasks that write to disk, such as rake db:schema:dump, are not compatible with Heroku’s ephemeral filesystem. The db:reset task is not supported. Heroku apps do not have permission to drop and create databases. Use the heroku pg:reset command

I have found a really simple approach to this is to use gist for input data. You copy and paste your data into a gist and then pass the link to the raw gist as a param to your rake task. Then in the rake task you open the remote file.

For example, if you are loading a yaml file:


Running Apps Locally, Heroku Local is a command-line tool to run Procfile-backed apps. file. Heroku Local makes use of node-foreman to accomplish its tasks. The .env file lets you capture all the config vars that you need in order to run your app locally. Your web process loads on port 5000 because this is what Foreman� To use a different environment file, use the -e flag: heroku local -e .env.test. To use a different port, use the -p flag: heroku local -p 7000. If you don’t specify a port, 5000 is used. For more information, type heroku help local at the command line. Run a one-off command locally. Heroku Local also lets you easily run a single one-off

How Heroku Works, Heroku lets you deploy, run and manage applications written in Ruby, Node.js, it associates a new Git remote, typically named heroku , with the local Git virtualized Unix container that contains your application slug in its file system. In other words, it will boot a dyno, load it with your slug, and execute� The Rake file task only runs if the file doesn’t exist, so I can now run rake db:load_backup and it’ll only download the database dump file the first time. It would also be nice if the heroku:download_backup ran when there is a new backup available in Heroku , but I’ll leave that for the future since this post is long enough.

You can connect to the heroku database from inside a rake task.

namespace :data_loader do
  desc "loads data"
  task load_data: :environment do

    if ! ENV['DATABASE_URL'].nil?
      ActiveRecord::Base.establish_connection ENV['DATABASE_URL']

    load_my_data( "/local/path/to/huge_file.txt" )


Then from your local project root, you can run:

DATABASE_URL=$(heroku config:get DATABASE_URL -a my_app) rake data_loader:load_data

You just need to change my_app to the name of your app, and you may also need to change DATABASE_URL to match the name of your database url config var from Heroku.

Getting Started with Rails 3.x on Heroku, Install the Heroku CLI on your local workstation. This ensures that Your config/ database.yml file should look something like this: development: One common example using the RSpec tasks in your Rakefile . If you see this� 9 Load local file during heroku rake task Feb 8 '12. View all questions and answers → Badges (57) Gold. 2. Rarest. Populist

Creating a rake task and Importing data from a file to a table in Rails 5, In Rails, we can have it as rake tasks and we can run it any time when If I am doing a file upload which is a common action, I should keep the� On all versions you can generate this file by running $ rake assets:precompile locally and checking the resultant files into Git. To compile your assets locally, run the assets:precompile task locally on your app. Make sure to use the production environment so that the production version of your assets are generated.

laserlemon/figaro: Simple Rails app configuration, Figaro parses a Git-ignored YAML file in your application and loads its values into ENV . Oftentimes, local configuration values change depending on Rails environment. In Figaro 0.7, a Rake task existed to set remote Heroku configuration� Load the dump into your local database using the pg_restore tool. If objects exist in a local copy of the database already, you might run into inconsistencies when doing a pg_restore . This will usually generate some warnings, due to differences between your Heroku database and a local database, but they are generally safe to ignore.

How to run a local script in heroku console? : rails, I'd like to run a local ruby script that will call certain model methods on some objects in my It's a one time thing so I don't want to write a rake task for it. If it's a different kind of script you will have to install the respective build pack in your heroku dyno. Little late to this post but we typically write rake tasks in our rake file. Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud. We stand with the Black community against racism, violence, and hate. Now more than ever we must support one another as allies and speak up for justice and equality.