A helper for rendering Rabl views anywhere, e.g. background jobs, views, mails, etc:
```ruby
def render_rabl(locals, view, options = {})
scope = Object.new
locals.each do |key, value|
scope.instance_variable_set :"@#{key}", value
end
options = { format: :json, scope: scope }.merge(options)
Rabl.render(nil, view, options)
end
```
Usage:
```ruby
locals = { users: User.all }
view = 'users/index'
render_rabl locals, view
```