VatZen Ruby Gem

Ruby helper to connect your backend with VatZen https://vatzen.com. Before using the gem, we highly encourage you to check out our official documentation.

Installation

Gem is published in RubyGems register and can be installed by following commands:

gem install vatzen

or

bundle add vatzen

Documentation

For more extensive documentation, please visit our official docs at https://documentation.vatzen.com

General

Once you obtained your API key from VatZen Dashboard, you can start using the module. To get started quickly, simply import the module and pass the API Key. After initialization, you can already start calling endpoints:

require 'vatzen'

vatzen = Vatzen.new('your api key')

rates = vatzen.rates.get_rates(member_state: true)

Rates

Before using the endpoint, you can familiarize yourself with our Rates endpoint documentation.

All the rates function are available inside VatZen object inside rates parameter. For example vatzen.rates.get_rates.

All Rates

In order to obtain all the rates, you can use rates.get_rates() function, which accepts optional options object with the following (also optional) keys:

key	type	description
limit	number	Limit for pagination
page	number	Page number, starting from 1
member_state	boolean	Response will be filtered by member states only

getAll usage example:

vatzen.rates.get_rates(member_state: true)

Rate by Country Code

If you want to obtain the rate by known ISO Country Code, you can use rates.get_rate_by_country_code function, which accepts country code string as a parameter. For example:

vatzen.rates.get_rate_by_country_code('FR')

Find Rate

You can use VatZen to lookup country rate using different parameters, such as country name, country code or ip address. In order to do that, you can use rates.find function, which accepts options object with the following properties:

key	type	description
country_code	string	2 characters ISO country code
country_name	string	Country name, for example Germany
ip_address	string	IP Address of your client which will be used to identify the country
use_client_ip	boolean	If set to true, VatZen will extract ip address from the request

Example for using this function:

vatzen.rates.get_rate(country_name: 'Germany')

VAT Number Validation

Before using the endpoint, you can familiarize yourself with our Validations endpoint documentation.

All the rates function are available inside VatZen object inside validation parameter. For example vatzen.validations.validate.

Validate VAT Number

VAT number validation is implemented inside validate function, which accepts only 1 parameter - vat number string. As the response, it returns the complete Validations entity.

Example:

vatzen.validation.validate('LU123455');

Create Validation

If you want to validate VAT number and store the validation, you can use create_validation function, which accepts VAT number as a parameter and returns VAT Entity.

Example:

vatzen.validation.create_validation('LU123455');

Get validation by id

Returns stored validation object by id. Implemented in get_validation_by_id function.

vatzen.validation.get_validation_by_id('dgy13wjbhbj342');

Get all validation

If you want to fetch all validations, you can use get_validations function, which accepts optional options object with the following optional parameters:

key	type	description
limit	number	Limit for pagination
page	number	Page number, starting from 1

vatzen.validation.get_validations(page: 2)

Prices Calculations

VAT prices calculations are implemented inside prices module in vatzen client, which you can access via vatzen.prices. Before using this endpoint, make sure to read our Official Prices Documentation.

Calculate Price

Implemented via vatzen.prices.calculate function. Using this function, you can perform price calculation based on different parameters. If accepts options object, with 1 required fields: amount, and various option fields, which will be used to identify VAT rate.

key	type	description
amount	number	Amount for VAT calculation in cents
vat_included	boolean	Identifies if VAT already included in amount
category	VatCategory	VAT Category used for price calculations
country_code	string	2 characters ISO country code
country_name	string	Country name, for example Germany
ip_address	string	IP Address of your client which will be used to identify the country
use_client_ip	boolean	If set to true, VatZen will extract ip address from the request

Example:

calculate_price_for_germany = vatzen.prices.calculate(
  amount: 10000,
  country_code: 'DE',
  category: 'audiobook',
)

print '100 EUR with VAT for AudioBooks in Germany: ' + (calculate_price_for_germany['amount']['total_incl_vat'] / 100).to_s

Create Price Calculation

If you want to calculate price and store the calculation, you can use create_price_calculation function, which accepts the same parameters as calculate function.

Example:

created_price_for_spain = vatzen.prices.create_price_calculation(
  amount: 10000,
  country_code: 'ES',
)

print 'Created price ID: ' + created_price_for_spain['id']

Get Price Calculation by id

Returns stored price calculation object by id. Implemented in get_calculation_by_id function.

vatzen.prices.get_calculation_by_id(createdPriceForSpain['id'])

Get all price calculations

If you want to fetch all calculations you performed, you can use get_prices function, which accepts optional options object with the following optional parameters:

key	type	description
limit	number	Limit for pagination
page	number	Page number, starting from 1