I'm trying to upload file to amazon s3 and apparently I have to write to a temp file first then upload that file. But I cannot figure it out how to do that with Sinatra and heroku since it cannot find "#{RAILS_ROOT}" or #{Rail.root} how do I upload temp file to sinatra with heroku.
Thanks
I'm assuming you have read through Heroku's docs for Uploading to S3. The temp directory path on Heroku is ./tmp. If you are running Sinatra, Heroku likely does not create the environment variables related to Rails (although it may, I'm not sure). Here is more info on Heroku's file system.
EDIT: In Sinatra, you can get the root directory via settings.root, similar to RAILS_ROOT.
Related
I published my first simple app on Heroku with a free dyno. This app writes a simple .txt file, that seems to be correctly written because my API services are working fine.
But if I try to check this file by entering in the file system using "heroku run bash -a MYAPP", I can't see that file in the folder I thought to see. It is like the file is not existing. Can someone tell me why?
Thanks.
I found this on https://devcenter.heroku.com/articles/active-storage-on-heroku:
In addition, any files stored on disk will not be visible from one-off dynos such as a heroku run bash instance or a scheduler task because these commands use new dynos.
It is still not so clear to me, but at least I know it is a normal (but strange) behaviour of Heroku!
I created a rails app that is hosted on Heroku. Now I want to upload a ruby script that will populate my database.
This script already exists and is using
PGconn.connect( :hostaddr=>"127.0.0.1", :port=>5432, :dbname=>"myDB", :user=>"MyUser", :password=>'MyPass');
This will obviously not work on Heroku.
I tried to get it using:
Rails.configuration.database_configuration
But I get
uninitialized constant Rails
How can I get the information so I can connect to my Heroku DB? Is there any way to make the same code wotk both on my localhost and on Heroku?
(ps: I am using foreman and the .ENV file, if it helps)
Edit:
The solution I took:
require 'yaml'
require 'erb'
config = YAML.load(ERB.new(File.read(File.join("config","database.yml"))).result)
In config I have all the information I need to perform the DB access.
Why would you not just access ENV['DATABASE_URL'] and break it up into the constituent parts? To see how this is done, if you do heroku run bash and do cat config\database.yml you will see how Heroku does this itself.
To ensure that locally it works as well if you execute via foreman run <Scriptname> then it will be executed and the contents of your .env will be loaded.
Our team is using foreman for development and .env files to preassign development ports to each piece of a service oriented application. It dramatically simplifies things for this file to just live with the repository as we are not doing any specific per-machine local configurations even though multiple docs seem to think this is a bad idea.
Does anybody know if Heroku will ignore these .env files automatically? What if they were added to .slugignore?
I setup a test app to try this out including a PORT=5005 in the .env file and then committing/deploying to Heroku. Heroku didn't seem to notice it was even there and no new config vars appeared when I checked heroku config.
You answered your own question, but just for confirmation: .env is entirely a Foreman construct, while Foreman and Heroku will make use of Procfile.
We actually wanted to be able to ensure consistent environments between local and Heroku deployments, so I wrote a python script to export .env up to Heroku.
In case others want to export .env to Heroku:
https://github.com/FinalsClub/karmaworld/blob/68f0f0340d7b6420e263cab648ff7de1ea851a0e/export_env_to_heroku.py
My app is a Ruby rack app. When my Heroku app starts it breaks because
/app/config.ru:8:in `read': No such file or directory - config/database.yml (Errno::ENOENT)
Why does this happen? I understood Heroku is meant to create this file https://devcenter.heroku.com/articles/cedar-migration
The database credentials will still be configured automatically: at slug compile time, a config/database.yml that parses the DATABASE_URL from the environment will be written into the app.
Frustratingly the doc at https://devcenter.heroku.com/articles/ruby doesn't explain about database.yml
Ok, the first thing - heroku does not use database.yml file. By default rails app loading it from config/ directory automatically. And it's no need to load it manually in config.ru. If you want to use in heroku PosgreSQL - just add add-on. Heroku wil do all other things to link your app and db. If you want to use external MySQL server you should use Amazon RDS add-on
heroku addons:add amazon_rds url=mysql2://user:pass#dbhost/dbname
By this you can use any db. I use GoDaddy mysql bases through the Amazon RDS add-on.
Any way, the problem in your config.ru 8th line something like
read 'config/database.yml'
Delete it and look other ways that not conflicted with heroku
Good luck
It appears Heroku only creates its config/database.yml if you have a folder config under source control. Not explained in docs.
I have a Rails 2 application running well on my local machine at the moment. But fails on Heroku, here's the log: http://pastie.org/1957572
I can't figure out why the path is "app/app/model/.." instead of just "app/model...", is there anything I need to config my Rails app for Heroku?
Thanks!
You probably figured this out, but it's because /app is the root folder for apps on Heroku
It's like if you had it on your own VPS and it was in /var/www, then the error would read like "/var/www/app..."