Resolving the Missing client_id parameter Issue in Heroku for Rails 6 Omniauth Authentication

Описание: Learn how to troubleshoot and solve the `Missing client_id parameter` error when deploying your Rails 6 app with Omniauth on Heroku.
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This video is based on the question https://stackoverflow.com/q/65345715/ asked by the user 'Stephen Scott Moore' ( https://stackoverflow.com/u/7649860/ ) and on the answer https://stackoverflow.com/a/65346236/ provided by the user 'Riba Ishtiaq' ( https://stackoverflow.com/u/10197480/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting the Missing client_id parameter Error in Heroku for Rails 6 Omniauth Authentication

If you’re developing a Ruby on Rails application that utilizes Omniauth for authentication, encountering issues once deployed to Heroku can be frustrating. One common error that developers might face is the Missing client_id parameter during authentication attempts. In this guide, we’ll delve into the root cause of this error and step you through resolving it effectively.

Understanding the Problem

When you run your Rails 6 application locally, the Omniauth authentication flow may work perfectly fine. However, after deploying to Heroku, you encounter an error message indicating that the client_id parameter is missing. Here's how the error manifests:

[[See Video to Reveal this Text or Code Snippet]]

This error suggests that your application is trying to connect to Facebook's API for authentication but can’t find the required client_id and client_secret credentials.

Troubleshooting Steps

1. Verify Your Credentials

In your credentials.yml file, you have added Facebook credentials like so:

[[See Video to Reveal this Text or Code Snippet]]

This is good, but make sure that when running on Heroku, these credentials are accessible.

2. Check .gitignore File

A common scenario is that your credentials.yml or the whole config folder is included in your .gitignore file. If your credentials file is not being pushed to Heroku, your app will not have access to these details in a live environment.

3. Set Heroku Config Vars

Since the credentials are needed by your application at runtime, you will need to set them as environment variables in Heroku. Here’s how to do that:

Log in to your Heroku Dashboard.

Navigate to your application.

Go to the Settings tab.

Click on Reveal Config Vars.

Add the necessary environment variables:

Key: RAILS_ENV - Value: production

Key: facebook_client_id - Value: 1234123412341234

Key: facebook_client_secret - Value: 12345123451234512345

4. Update Your Devise Configuration

After you have set the config vars, ensure your Omniauth setup in devise.rb is using ENV to access those variables directly. Update it as follows:

[[See Video to Reveal this Text or Code Snippet]]

This ensures that your application pulls those credentials from environment variables instead of the credentials.yml file.

Conclusion: Connecting Seamlessly to Facebook

By following the steps outlined above, you should be able to resolve the Missing client_id parameter error when deploying your Rails 6 app on Heroku. Utilizing environment variables to store sensitive credentials is not just a best practice—it’s essential for seamless deployment and to maintain the security of your application.

If you still encounter issues after trying these steps, don’t hesitate to review your Heroku logs or ask for help from the community. Happy coding!