deploy.rb: undefined local variable or method `home` for main:Object

Question

I know there are a lot of questions regarding this error message, but I couldn't find one where this error is happening in the same context as mine. I'm trying to migrate a previously working Capistrano configuration from version 2 to Capistrano 3. Unfortunately, calling `cap production deploy --dry-run` generates the error ``` cap aborted! undefined local variable or method `home' for main:Object /myapp/config/deploy.rb:6:in `<top (required)>' ``` Here's the content of `deploy.rb` up to line 6 where the error occurs: ``` set :user, "myuser" set :application, "myapp" set :domain, "mydomain" set :repository, "git@github.com:acme/myapp.git" set :home, "/home/myuser" set :deploy_to, "#{home}/#{domain}" ``` I don't know much about Ruby, but from what I've gathered, the colon means these are symbols, not variables, and in the Capistrano documentation they're using the same syntax to define "variables" (see paragraph 5 "Set the shared information in deploy.rb")? The deploy script ran flawle…

Accepted Answer

I don't think Capistrano will create local variables for you, but you can do so yourself:

```
domain = "mydomain"
home = "/home/myuser"

set :domain, domain
set :home, home
set :deploy_to, "#{home}/#{domain}"
```

Alternatively, you can use `fetch`, the counterpart to `set`:

```
set :domain, "mydomain"
set :home, "/home/myuser"
set :deploy_to, "#{fetch(:home)}/#{fetch(:domain)}"
```

deploy.rb: undefined local variable or method `home` for main:Object

Solution

Problem