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37 lines
1.1 KiB
Markdown
37 lines
1.1 KiB
Markdown
# Run Some Code Whenever Rails Console Starts
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It can be handy to run some code whenever the `rails console` command is run.
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You may want to have some modules required, some variables set up, or, both
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fancy and practical, default to the read replica database in production.
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Rails provides a hook into the console startup with the `console` block in
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`config/application.rb`.
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Here is what it looks like to `puts` out the environment:
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```ruby
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class Application < Rails::Application
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# everything else ...
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console do
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puts '############################################'
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puts 'Connected to the #{Rails.env.upcase} console'
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puts '############################################'
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end
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end
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```
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To avoid cluttering `config/application.rb` with a bunch of console-specific
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logic, you can move it to another file and then have the console block require
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that file with the `-r` flag.
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```ruby
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class Application < Rails::Application
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console do
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ARGV.push "-r", Rails.root.join("lib/console.rb")
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end
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end
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```
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[source](https://til.hashrocket.com/posts/avb2v3ubdt-pass-a-block-on-console-load)
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