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How to get global variables from database config file in rails application?


How to list the tables in a SQLite database file that was opened with ATTACH?How can I rename a database column in a Ruby on Rails migration?How do I get the current absolute URL in Ruby on Rails?Problem when I run my server on localhost (ruby on rails)MySql Error 1045 after rake db:createrails can not connect to the globale database server even host name and database are givenInstalling mysql with brewRoR 4 ERROR on 'rake db:create' or 'rake about'Gem::LoadError Specified 'mysql2' for database adapter, but the gem is not loadedwhy is Rake aborting because of “mysql” on windows






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















I want to get secret informations from other place beside rails application and the host. I made a global variable file under config/initializers to get the keys. Then set them in the database connection file. Like this:



config/initializers/get_secrets.rb



@@username = 'A'
@@password = 'B'


config/database.yml



development:
adapter: mysql2
encoding: utf8
database: my_db_name
username: <%= @@username %>
password: <%= @@password %>
host: 127.0.0.1
port: 3306


When ran rails console, got:



./config/initializers/get_secrets.rb:1: warning: class variable access from toplevel
(erb):10: warning: class variable access from toplevel
>


It seems not a good usage in this case. Then is there a right way?










share|improve this question



















  • 1





    Why are you declaring database username and password globally? You should use environement variable instead ENV[:username], ENV[:password]

    – ashvin
    Mar 27 at 13:46











  • That’s the special needs. Don’t save those informations locally.

    – Jingqiang Zhang
    Mar 27 at 14:18

















0















I want to get secret informations from other place beside rails application and the host. I made a global variable file under config/initializers to get the keys. Then set them in the database connection file. Like this:



config/initializers/get_secrets.rb



@@username = 'A'
@@password = 'B'


config/database.yml



development:
adapter: mysql2
encoding: utf8
database: my_db_name
username: <%= @@username %>
password: <%= @@password %>
host: 127.0.0.1
port: 3306


When ran rails console, got:



./config/initializers/get_secrets.rb:1: warning: class variable access from toplevel
(erb):10: warning: class variable access from toplevel
>


It seems not a good usage in this case. Then is there a right way?










share|improve this question



















  • 1





    Why are you declaring database username and password globally? You should use environement variable instead ENV[:username], ENV[:password]

    – ashvin
    Mar 27 at 13:46











  • That’s the special needs. Don’t save those informations locally.

    – Jingqiang Zhang
    Mar 27 at 14:18













0












0








0








I want to get secret informations from other place beside rails application and the host. I made a global variable file under config/initializers to get the keys. Then set them in the database connection file. Like this:



config/initializers/get_secrets.rb



@@username = 'A'
@@password = 'B'


config/database.yml



development:
adapter: mysql2
encoding: utf8
database: my_db_name
username: <%= @@username %>
password: <%= @@password %>
host: 127.0.0.1
port: 3306


When ran rails console, got:



./config/initializers/get_secrets.rb:1: warning: class variable access from toplevel
(erb):10: warning: class variable access from toplevel
>


It seems not a good usage in this case. Then is there a right way?










share|improve this question














I want to get secret informations from other place beside rails application and the host. I made a global variable file under config/initializers to get the keys. Then set them in the database connection file. Like this:



config/initializers/get_secrets.rb



@@username = 'A'
@@password = 'B'


config/database.yml



development:
adapter: mysql2
encoding: utf8
database: my_db_name
username: <%= @@username %>
password: <%= @@password %>
host: 127.0.0.1
port: 3306


When ran rails console, got:



./config/initializers/get_secrets.rb:1: warning: class variable access from toplevel
(erb):10: warning: class variable access from toplevel
>


It seems not a good usage in this case. Then is there a right way?







ruby-on-rails database






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 27 at 13:33









Jingqiang ZhangJingqiang Zhang

6387 silver badges20 bronze badges




6387 silver badges20 bronze badges










  • 1





    Why are you declaring database username and password globally? You should use environement variable instead ENV[:username], ENV[:password]

    – ashvin
    Mar 27 at 13:46











  • That’s the special needs. Don’t save those informations locally.

    – Jingqiang Zhang
    Mar 27 at 14:18












  • 1





    Why are you declaring database username and password globally? You should use environement variable instead ENV[:username], ENV[:password]

    – ashvin
    Mar 27 at 13:46











  • That’s the special needs. Don’t save those informations locally.

    – Jingqiang Zhang
    Mar 27 at 14:18







1




1





Why are you declaring database username and password globally? You should use environement variable instead ENV[:username], ENV[:password]

– ashvin
Mar 27 at 13:46





Why are you declaring database username and password globally? You should use environement variable instead ENV[:username], ENV[:password]

– ashvin
Mar 27 at 13:46













That’s the special needs. Don’t save those informations locally.

– Jingqiang Zhang
Mar 27 at 14:18





That’s the special needs. Don’t save those informations locally.

– Jingqiang Zhang
Mar 27 at 14:18












1 Answer
1






active

oldest

votes


















1














In Rails 5.2+, we have a master.key file and a credentials YAML file. The master.key file encrypts your credentials (so never show anyone this key except your server).



You can activate this by doing:



EDITOR=vim rails credentials:edit


The file:



aws:
key: 123
google_key: 456
secret_key_base: f230ffddd1d1f151j3bchjas9a292j221...


If you want to use a credential, it looks like this:



Rails.application.credentials.google_key


or for nested resources like the AWS one:



Rails.application.credentials.aws[:key]


But if you're on Rails 5.1 or less, you don't have this ability. So, you do it in a different way:




  1. Environment variables. Your program environment can always export an ENV and retrieve it. I always do this for simple nuisances like test email passwords:



    export GMAIL_PASSWORD="1234" and its usage, ENV['GMAIL_PASSWORD']




  2. Secrets.yml. This is a file that basically predates master.key + credentials by functioning as an in between credential handler for your environments. It's janky and often erroneously committed to repos by accident, but we do what we can:



    development:
    secret_key_base: 1112sdasae1d13d1tfd1d3...


    GMAIL_PASSWORD: '1234'

    test:
    secret_key_base: _your_secret_ as above

    production:
    secret_key_base: <%= secure_token %>


And it is accessed like Rails.application.secrets.GMAIL_PASSWORD



If you cannot access your variables, it may be because the secrets.yml file is not being loading in or you are in the wrong environment. Notice those vars are nested in particular environments.






share|improve this answer

























  • Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

    – Jingqiang Zhang
    Mar 28 at 0:07












  • We changed idea and set them to env.

    – Jingqiang Zhang
    Mar 28 at 11:36










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1 Answer
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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














In Rails 5.2+, we have a master.key file and a credentials YAML file. The master.key file encrypts your credentials (so never show anyone this key except your server).



You can activate this by doing:



EDITOR=vim rails credentials:edit


The file:



aws:
key: 123
google_key: 456
secret_key_base: f230ffddd1d1f151j3bchjas9a292j221...


If you want to use a credential, it looks like this:



Rails.application.credentials.google_key


or for nested resources like the AWS one:



Rails.application.credentials.aws[:key]


But if you're on Rails 5.1 or less, you don't have this ability. So, you do it in a different way:




  1. Environment variables. Your program environment can always export an ENV and retrieve it. I always do this for simple nuisances like test email passwords:



    export GMAIL_PASSWORD="1234" and its usage, ENV['GMAIL_PASSWORD']




  2. Secrets.yml. This is a file that basically predates master.key + credentials by functioning as an in between credential handler for your environments. It's janky and often erroneously committed to repos by accident, but we do what we can:



    development:
    secret_key_base: 1112sdasae1d13d1tfd1d3...


    GMAIL_PASSWORD: '1234'

    test:
    secret_key_base: _your_secret_ as above

    production:
    secret_key_base: <%= secure_token %>


And it is accessed like Rails.application.secrets.GMAIL_PASSWORD



If you cannot access your variables, it may be because the secrets.yml file is not being loading in or you are in the wrong environment. Notice those vars are nested in particular environments.






share|improve this answer

























  • Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

    – Jingqiang Zhang
    Mar 28 at 0:07












  • We changed idea and set them to env.

    – Jingqiang Zhang
    Mar 28 at 11:36















1














In Rails 5.2+, we have a master.key file and a credentials YAML file. The master.key file encrypts your credentials (so never show anyone this key except your server).



You can activate this by doing:



EDITOR=vim rails credentials:edit


The file:



aws:
key: 123
google_key: 456
secret_key_base: f230ffddd1d1f151j3bchjas9a292j221...


If you want to use a credential, it looks like this:



Rails.application.credentials.google_key


or for nested resources like the AWS one:



Rails.application.credentials.aws[:key]


But if you're on Rails 5.1 or less, you don't have this ability. So, you do it in a different way:




  1. Environment variables. Your program environment can always export an ENV and retrieve it. I always do this for simple nuisances like test email passwords:



    export GMAIL_PASSWORD="1234" and its usage, ENV['GMAIL_PASSWORD']




  2. Secrets.yml. This is a file that basically predates master.key + credentials by functioning as an in between credential handler for your environments. It's janky and often erroneously committed to repos by accident, but we do what we can:



    development:
    secret_key_base: 1112sdasae1d13d1tfd1d3...


    GMAIL_PASSWORD: '1234'

    test:
    secret_key_base: _your_secret_ as above

    production:
    secret_key_base: <%= secure_token %>


And it is accessed like Rails.application.secrets.GMAIL_PASSWORD



If you cannot access your variables, it may be because the secrets.yml file is not being loading in or you are in the wrong environment. Notice those vars are nested in particular environments.






share|improve this answer

























  • Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

    – Jingqiang Zhang
    Mar 28 at 0:07












  • We changed idea and set them to env.

    – Jingqiang Zhang
    Mar 28 at 11:36













1












1








1







In Rails 5.2+, we have a master.key file and a credentials YAML file. The master.key file encrypts your credentials (so never show anyone this key except your server).



You can activate this by doing:



EDITOR=vim rails credentials:edit


The file:



aws:
key: 123
google_key: 456
secret_key_base: f230ffddd1d1f151j3bchjas9a292j221...


If you want to use a credential, it looks like this:



Rails.application.credentials.google_key


or for nested resources like the AWS one:



Rails.application.credentials.aws[:key]


But if you're on Rails 5.1 or less, you don't have this ability. So, you do it in a different way:




  1. Environment variables. Your program environment can always export an ENV and retrieve it. I always do this for simple nuisances like test email passwords:



    export GMAIL_PASSWORD="1234" and its usage, ENV['GMAIL_PASSWORD']




  2. Secrets.yml. This is a file that basically predates master.key + credentials by functioning as an in between credential handler for your environments. It's janky and often erroneously committed to repos by accident, but we do what we can:



    development:
    secret_key_base: 1112sdasae1d13d1tfd1d3...


    GMAIL_PASSWORD: '1234'

    test:
    secret_key_base: _your_secret_ as above

    production:
    secret_key_base: <%= secure_token %>


And it is accessed like Rails.application.secrets.GMAIL_PASSWORD



If you cannot access your variables, it may be because the secrets.yml file is not being loading in or you are in the wrong environment. Notice those vars are nested in particular environments.






share|improve this answer













In Rails 5.2+, we have a master.key file and a credentials YAML file. The master.key file encrypts your credentials (so never show anyone this key except your server).



You can activate this by doing:



EDITOR=vim rails credentials:edit


The file:



aws:
key: 123
google_key: 456
secret_key_base: f230ffddd1d1f151j3bchjas9a292j221...


If you want to use a credential, it looks like this:



Rails.application.credentials.google_key


or for nested resources like the AWS one:



Rails.application.credentials.aws[:key]


But if you're on Rails 5.1 or less, you don't have this ability. So, you do it in a different way:




  1. Environment variables. Your program environment can always export an ENV and retrieve it. I always do this for simple nuisances like test email passwords:



    export GMAIL_PASSWORD="1234" and its usage, ENV['GMAIL_PASSWORD']




  2. Secrets.yml. This is a file that basically predates master.key + credentials by functioning as an in between credential handler for your environments. It's janky and often erroneously committed to repos by accident, but we do what we can:



    development:
    secret_key_base: 1112sdasae1d13d1tfd1d3...


    GMAIL_PASSWORD: '1234'

    test:
    secret_key_base: _your_secret_ as above

    production:
    secret_key_base: <%= secure_token %>


And it is accessed like Rails.application.secrets.GMAIL_PASSWORD



If you cannot access your variables, it may be because the secrets.yml file is not being loading in or you are in the wrong environment. Notice those vars are nested in particular environments.







share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 27 at 16:52









Veridian DynamicsVeridian Dynamics

1,1811 gold badge3 silver badges13 bronze badges




1,1811 gold badge3 silver badges13 bronze badges















  • Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

    – Jingqiang Zhang
    Mar 28 at 0:07












  • We changed idea and set them to env.

    – Jingqiang Zhang
    Mar 28 at 11:36

















  • Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

    – Jingqiang Zhang
    Mar 28 at 0:07












  • We changed idea and set them to env.

    – Jingqiang Zhang
    Mar 28 at 11:36
















Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

– Jingqiang Zhang
Mar 28 at 0:07






Thank you. I know this way. But now only want to get secret from remote service. Yes, not local but a third party service.

– Jingqiang Zhang
Mar 28 at 0:07














We changed idea and set them to env.

– Jingqiang Zhang
Mar 28 at 11:36





We changed idea and set them to env.

– Jingqiang Zhang
Mar 28 at 11:36








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