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Migration from v3.x

Version 4.x of the Ruby client uses the v2 Mollie API. Please refer to Migrating from v1 to v2 for a general overview of the changes introduced by the new Mollie API.

Code examples can be found in the /examples folder.

Nested resources

Several helper methods were added to retrieve nested resources. Nested resources now return a collection or the object itself:

payment  = Mollie::Payment.get('tr_7UhSN1zuXS')
refunds  = payment.refunds # => Mollie::List
customer = payment.customer # => Mollie::Customer

Multi-currency

The Ruby client v4 adds support for multi-currency. All amounts are parsed as a Mollie::Amount object.

payment = Mollie::Payment.create(
  amount:      { value: '42.10', currency: 'EUR' },
  description: 'My first payment'
)

payment = Mollie::Payment.get('tr_7UhSN1zuXS')
payment.amount # => Mollie::Amount
payment.amount.value # => 42.10 # BigDecimal
payment.amount.currency # => 'EUR'

Note: If you specify an amount, you must specify the correct number of decimals. We strongly recommend sending value as a string. Note that even though most currencies use two decimals, some use three or none, like JPY. All amounts returned in the v2 API will use this format.

Error handling

A RequestError is raised for all API error responses. The RequestError object contains the following details:

  • status: HTTP status code of the response
  • title: Title of the error
  • detail: Extra information about the error
  • field: Field of your request that is likely causing the error. Only available in case of 422 Unprocessable Entity errors.
  • links: Links to relevant API documentation

Changes in Mollie API v2

  • The identifier for the payment method Bancontact has been renamed from mistercash to bancontact
  • Some resources support embedding of related sub-resources. For instance, when retrieving a payment any refunds can be embedded by using the embed: 'refunds' option. See the Get payment documentation for more information.

Locale changes

Only full locales with both the language and the country code are supported, e.g. nl_NL. Locales are always returned as full locales.

Combined date and time fields

Formatting of fields such as created_at has been updated to be strictly compliant to ISO-8601 formatting. Example value: 2018-03-05T12:30:10+00:00.

Changes in the Payments API

The following changes have been made in regards to the status of payments:

  • The statuses paidout, refunded and charged_back have been removed
  • The status cancelled has been renamed to canceled (US English spelling)
  • The individual billing and shipping address parameters that can be used when creating a credit card or PayPal payment have been replaced by address objects. Instead of passing billing_address, billing_postal, billing_city, billing_region and/or billing_country (or the equivalent fields starting with shipping), one should now pass a billing_address (and/or shipping_address) object, as follows:
{
  amount: { value: '100.00', currency: 'USD' },
  description: 'My first payment',
  billing_address: {
    street_and_number: 'Dorpstraat 1',
    postal_code: '1122 AA',
    city: 'Amsterdam',
    region: 'Noord-Holland',
    country: 'NL'
  }
}

The following fields have been changed, renamed or moved:

  • cancelled_datetime has been renamed to canceled_at
  • created_datetime has been renamed to created_at
  • expired_datetime has been renamed to expired_at
  • failed_datetime has been renamed to failed_at
  • paid_datetime has been renamed to paid_at
  • recurring_type has been renamed to sequence_type. This field is now always present. A one-off payment (not the start of a recurring sequence and not a recurring payment) will have the value oneoff.
  • failure_reason has been moved from the Payment resource to the credit card detail object, and no longer available for Bancontact payments.
  • details.bitcoin_amount is now an amount object in the XBT currency

The following fields have been removed:

  • expiry_period has been removed from the Payment resource. You can use expires_at which contains the same information.
  • issuer has been removed from the Payment resource. You can however, still pass it to the Create payment API.
  • details.bitcoin_rate has been removed from the Bitcoin detail object
  • details.card_country has been removed from the credit card detail object
  • The option to include the settlement using the include query string parameter has been removed

These new fields have been added:

  • settlement_amount has been added to the responses of the Payments API, the Refunds API and the Chargebacks API. This optional field will contain the amount that will be settled to your account, converted to the currency your account is settled in. It follows the same syntax as the amount property.
    • Note that for refunds and chargebacks, the value key of settlement_amount will be negative.
    • Any amounts not settled by Mollie will not be reflected in this amount, e.g. PayPal or gift cards.
  • links['status'] has been added to the responses for banktransfer payments. Your customer can check the status of their transfer at this URL.
  • links['pay_online'] has been added to the responses for banktransfer payments. At this URL your customer can finish the payment using an alternative payment method also activated on your website profile.

Changes in the Refunds API

The following fields have been changed, renamed or moved:

  • amount is now mandatory when creating a refund. You must specify both amount.currency and amount.value.
  • The amount field is now of the amount type and contains a value and a currency
  • payment, which contained the payment resource related to the refund, is no longer returned. Instead, the payment ID is returned by default, in the payment_id field. The payment resource can still easily be accessed using the payment helper method.

These new fields have been added:

  • settlement_amount has been added. See the explanation of the settlementAmount for the Payments API.

Changes in the Chargebacks API

The following fields have been changed, renamed or moved:

  • The amount field is now of the amount type and contains a value and a currency
  • chargeback_datetime has been renamed to created_at
  • reversed_datetime has been renamed to reversed_at. This field is now only returned if the chargeback is reversed.
  • payment, which contained the payment ID related to the chargeback, has been renamed to payment_id. The payment resource can easily be accessed using the payment helper method.
  • Pagination has been removed, so all fields related to pagination are not available anymore. The list method will now return all chargebacks.

These new fields have been added:

  • settlement_amount has been added. See the explanation of the settlementAmount for the Payments API.

Changes in the Methods API

The following fields have been changed, renamed or moved:

  • amount including minimum and maximum have been removed
  • Pagination has been removed, so all fields related to pagination are not available anymore. The list method will now return all payment methods.

The following parameters have been changed or added:

  • The parameter recurring_type has been renamed to sequence_type. Possible values are oneoff, first or recurring.
  • The parameter amount has been added. This should be an object containing value and currency. Only payment methods that support the amount/currency will be returned.

Changes in the Issuers API

The issuers API has been removed. Instead, you can get the issuers via the Get Method API using the issuers include.

Changes in the Customers API

The following fields have been changed, renamed or moved:

  • created_datetime has been renamed to created_at
  • recently_used_methods has been removed

Changes in the Subscriptions API

The following changes have been made in regards to the status of subscriptions:

  • Subscriptions that are canceled can be retrieved from the API
  • The canceled status is changed from British English to American English

The following fields have been changed, renamed or moved:

  • created_datetime has been renamed to created_at
  • cancelled_datetime has been renamed to canceled_at, and is now only returned when the subscription is canceled

Changes in the Profiles API

The following fields have been changed, renamed or removed:

  • created_datetime has been renamed to created_at
  • updated_datetime has been removed
  • phone is now formatted in E.164 formatting
  • The API keys subresource has been removed

Changes in the Settlements API

The following fields have been changed, renamed or moved:

  • created_datetime has been renamed to created_at
  • settled_datetime has been renamed to settled_at
  • The fields payment_ids, refund_ids and chargeback_ids has been removed
  • All amounts have been changed to the amount type. Note that the costs.amount* fields can have more decimals than you would expect. The same goes for rate.fixed, which can contain fractional cents.
  • amount.net, amount.vat and amount.gross have been moved one level up as amount_net, amount_vat and amount_gross

Changes in the Mandates API

The following fields have been changed, renamed or moved:

  • created_datetime has been renamed to created_at

Changes in the Organizations API

The fields country, registration_date and registration_type have been removed. The field address is now an OpenStruct with address details. See Address object.

Changes in the Permissions API

The field warning has been removed.

Changes in the Invoice API

  • issued_date has been renamed to issued_at
  • paid_date has been renamed to paid_at
  • due_date has been renamed to due_at
  • amount.net, amount.vat and amount.gross have been moved one level up as amount_net, amount_vat and amountGross