### Install App Configurable Gem

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Add the 'app_configurable' gem to your application's Gemfile to start using it for configuration management.

```Ruby
gem 'app_configurable'
```

--------------------------------

### Define Root-Level Configurations

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Define application-wide configurations using the 'entry' directive. This example shows how to set default values and environment-specific values for 'secret_key' and 'base_url'.

```Ruby
class AppConfig
  include AppConfigurable

  entry :secret_key, default: 'your_secret_key'
  entry :base_url, default: 'http://my-site.local', production: 'http://  my-site.io', staging: 'http://staging.my-site.io'
end
```

--------------------------------

### Define Namespaced Configurations

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Define configurations for specific services or modules by creating nested classes that include 'AppConfigurable'. This example shows configurations for 'Hubspot'.

```Ruby
class AppConfig::Hubspot
  include AppConfigurable

  entry :access_token, default: 'secret_access_token'
  entry :base_url, default: 'https://hubspot.com/1234', production: 'https:// hubspot.com/4321'
  entry :client_secret, default: 'client_secret_token'
end
```

--------------------------------

### Set Environment Per Namespace

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Set the environment for a specific configuration namespace by prefixing the environment variable with the namespace and module names.

```Bash
APPCONFIG_MYNICEMODULE_ENV=staging rspec
```

--------------------------------

### Load Configurations Globally

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Load configuration files globally using 'AppConfigurable.load_configs'. You can specify the environment or enable error reporting for missing configurations.

```Ruby
AppConfigurable.load_configs(%w[./config/app_config.rb])
```

```Ruby
AppConfigurable.load_configs(%w[./config/app_config.rb], rails_env: 'production')
```

```Ruby
AppConfigurable.load_configs(%w[./config/app_config.rb], raise_on_missing: true)
```

--------------------------------

### Access Configurations

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Access defined configurations directly as class methods on the configuration class.

```Ruby
AppConfig.secret_key
```

--------------------------------

### Access Namespaced Configurations

Source: https://github.com/ramp106/app_configurable/blob/master/README.md

Access configurations within namespaces using the nested class structure.

```Ruby
AppConfig.secret_key_base
```

```Ruby
AppConfig::Hubspot.base_url
```

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