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Revise encrypted credentials section [ci skip]

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Removes unnecessary mention of `rails secret` from the discussion of
`rails credentials:edit` to avoid confusion, and tweaks surrounding
language.

Partially addresses #39528.
This commit is contained in:
Jonathan Hefner 2020-06-05 17:18:49 -05:00
parent 95af87f0a4
commit ee64f0c379
1 changed files with 10 additions and 10 deletions
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20
guides/source/security.md
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@ -1173,31 +1173,31 @@ It is beyond the scope of this guide to inform you on how to secure your applica
### Custom Credentials
Rails stores secrets in `config/credentials.yml.enc`, which is encrypted and hence cannot be edited directly. Rails uses `config/master.key` or alternatively looks for environment variable `ENV["RAILS_MASTER_KEY"]` to encrypt the credentials file. The credentials file can be stored in version control, as long as master key is kept safe.
Rails stores secrets in `config/credentials.yml.enc`, which is encrypted and hence cannot be edited directly. Rails uses `config/master.key` or alternatively looks for the environment variable `ENV["RAILS_MASTER_KEY"]` to encrypt the credentials file. Because the credentials file is encrypted, it can be stored in version control, as long as the master key is kept safe.
To add new secret to credentials, first run `bin/rails secret` to get a new secret. Then run `bin/rails credentials:edit` to edit credentials, and add the secret. Running `credentials:edit` creates new credentials file and master key, if they did not already exist.
By default, the credentials file contains the application's
`secret_key_base`. It can also be used to store other secrets such as access keys for external APIs.
By default, this file contains the application's
`secret_key_base`, but it could also be used to store other credentials such as access keys for external APIs.
To edit the credentials file, run `bin/rails credentials:edit`. This command will create the credentials file if it does not exist. Additionally, this command will create `config/master.key` if no master key is defined.
The secrets kept in credentials file are accessible via `Rails.application.credentials`.
Secrets kept in the credentials file are accessible via `Rails.application.credentials`.
For example, with the following decrypted `config/credentials.yml.enc`:
```yaml
secret_key_base: 3b7cd727ee24e8444053437c36cc66c3
secret_key_base: 3b7cd72...
some_api_key: SOMEKEY
```
`Rails.application.credentials.some_api_key` returns `SOMEKEY` in any environment.
`Rails.application.credentials.some_api_key` returns `"SOMEKEY"`.
If you want an exception to be raised when some key is blank, use the bang
If you want an exception to be raised when some key is blank, you can use the bang
version:
```ruby
Rails.application.credentials.some_api_key! # => raises KeyError: :some_api_key is blank
# When some_api_key is blank...
Rails.application.credentials.some_api_key! # => KeyError: :some_api_key is blank
```
TIP: Learn more about credentials with `bin/rails credentials:help`.
WARNING: Keep your master key safe. Do not commit your master key.