Connecting two vagrant machines - ruby-on-rails

Question

I am currently attempting to connect two vagrant environments. One is a web application with an associated postgres database. The other is an API application which makes calls to the postgres database on the first vagrant machine. Can anyone provide advice as to how this can be achieved. I believe I will need to change my database.yml or envirornment.rb file but not quite sure how. My vagrantfiles and database.yml files are currently like so:
Front-End Machine Vagrantfile:
Vagrant.configure("2") do |config|
config.vm.box = "hashicorp/precise64"
config.vm.network "forwarded_port", guest: 3000, host: 3000
config.vm.synced_folder "../Base", "/Base"
config.vm.synced_folder "../api", "/API"
end
Front-End Machine database.yml:
default: &default
adapter: postgresql
database: chsh
development: &development
<<: *default
host: localhost
username: username
password: password
database: database_name
pool: 10
API Machine:
Vagrant.configure("2") do |config|
config.vm.box = "hashicorp/precise64"
config.vm.network "forwarded_port", guest: 3002, host: 3002
config.vm.synced_folder "../Base", "/Base"
config.vm.provider "virtualbox" do |vb|
vb.gui = true
end
end

Answer 1

As I read the code, I didn't see any way to configure multiple machines.
You can bypass this by reconfiguring before use..
module Vagrant
def set(name)
send(name) if respond_to?(name)
end
def front_end
Vagrant.configure("2") do |config|
config.vm.box = "hashicorp/precise64"
config.vm.network "forwarded_port", guest: 3000, host: 3000
config.vm.synced_folder "../Base", "/Base"
config.vm.synced_folder "../api", "/API"
end
end
def api
Vagrant.configure("2") do |config|
config.vm.box = "hashicorp/precise64"
config.vm.network "forwarded_port", guest: 3002, host: 3002
config.vm.synced_folder "../Base", "/Base"
config.vm.provider "virtualbox" do |vb|
vb.gui = true
end
end
end
end
You will be then able to do something like this:
Vagrant.set(:front_end)
Vagrant.set(:api)