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Version: 3.x

Shipping events

Introduction​

info

This feature was introduced in Saleor 3.1.

Synchronous webhooks for shipping methods allow Saleor Apps to control shipping methods available for checkouts and draft orders. Diagram below shows example flow of requests between your store customer, Saleor and shipping app.

Required permissions​

  • MANAGE_SHIPPING
  • MANAGE_ORDERS
  • MANAGE_CHECKOUTS

List external shipping methods​

This solution can be used whenever shipping methods need to be fetched from a 3rd party API or when the pricing logic built into Saleor is insufficient for your needs.

External shipping methods can be used alone or with internal shipping methods. Saleor will return both the internal methods (defined through the Saleor Dashboard and stored in the ShippingMethod model) and external methods returned from the sync webhook.

Subscribe to the webhook​

Saleor Apps can subscribe to the SHIPPING_LIST_METHODS_FOR_CHECKOUT synchronous webhook. It is called whenever shipping methods are queried for a checkout object.

{
  checkout(id: "checkout-id") {
    shippingMethods {
      id
      name
    }
  }
}

Request format​

This is an example response from the application:

[
  {
    "type": "Checkout",
    "id": "Q2hlY2tvdXQ6dXVpZA==",
    "channel": {
      "type": "Channel",
      "id": "Q2hhbm5lbDox",
      "slug": "default-channel",
      "currency_code": "USD"
    },
    "user": {
      "type": "User",
      "id": "VXNlcjoxOTY=",
      "email": "linda.thomas@example.com",
      "first_name": "Linda",
      "last_name": "Thomas"
    },
    "billing_address": {
      "type": "Address",
      "id": "QWRkcmVzczpOb25l",
      "first_name": "Krista",
      "last_name": "Wyatt",
      "company_name": "",
      "street_address_1": "98910 Cynthia Rest",
      "street_address_2": "",
      "city": "South Christopherville",
      "city_area": "",
      "postal_code": "15178",
      "country": "US",
      "country_area": "PA",
      "phone": ""
    },
    "shipping_address": {
      "type": "Address",
      "id": "QWRkcmVzczpOb25l",
      "first_name": "Bethany",
      "last_name": "Hayes",
      "company_name": "",
      "street_address_1": "59179 Bruce Gardens Apt. 413",
      "street_address_2": "",
      "city": "Lauramouth",
      "city_area": "",
      "postal_code": "71807",
      "country": "US",
      "country_area": "AR",
      "phone": ""
    },
    "shipping_method": null,
    "warehouse_address": {
      "type": "Address",
      "id": "QWRkcmVzczoxMTMw",
      "first_name": "John",
      "last_name": "Doe",
      "company_name": "Mirumee Software",
      "street_address_1": "Tęczowa 7",
      "street_address_2": "",
      "city": "WROCŁAW",
      "city_area": "",
      "postal_code": "53-601",
      "country": "PL",
      "country_area": "",
      "phone": "+48713988102"
    },
    "lines": [],
    "collection_point": null,
    "meta": {
      "issued_at": "1914-06-28T10:50:00+00:00",
      "version": "dev",
      "issuing_principal": {
        "id": null,
        "type": null
      }
    },
    "private_metadata": [],
    "metadata": [],
    "created": "2022-02-20T21:21:18.756Z",
    "last_change": "2022-02-20T21:21:18.756Z",
    "email": "linda.thomas@example.com",
    "currency": "USD",
    "discount_amount": "0.00",
    "discount_name": null
  }
]
Expand ▼

Response format​

This is an example response from the application:

[
  {
    "id": "method-1",
    "name": "Same Day Delivery",
    "amount": 10.0,
    "currency": "USD"
  },
  {
    "id": "method-2",
    "name": "Standard Delivery",
    "amount": 0.0,
    "currency": "USD",
    "maximum_delivery_days": 14
  }
]

Where:

  • id (required) is id of external shipping method e.g dhl-exp. It will be converted by Saleor to app:<app-database-id>:<id-returned-by-webhook> and encoded in Base64 format.
  • name (required) of shipping method e.g DHL Express.
  • amount (required) is price that customer needs to pay for delivery with shipping method.
  • currency (required) is ISO currency code for amount.
  • maximum_delivery_days is maximum delivery days for delivery promise of shipping carrier.

Selecting shipping methods​

External shipping methods have an ID of the following format: app:<app-database-id>:<id-returned-by-webhook> encoded in Base64.

They are selected using the same mutations as internal shipping methods, e.g.:

mutation {
  checkoutDeliveryMethodUpdate(
    id: "Q2hlY2tvdXQ6dXVpZA=="
    deliveryMethodId: "YXBwOjEyMzQ6c29tZS1pZA=="
  ) {
    checkout {
      deliveryMethod {
        ... on ShippingMethod {
          id
          name
        }
      }
    }
    errors {
      code
      message
    }
  }
}
Expand ▼

Information about an external shipping method is stored in the order's private metadata. This entry should be kept to allow the shipping method to be correctly displayed in the dashboard.

Filter shipping methods​

This solution allows you to control which shipping methods (internal or external) should be available to customers on the storefront or later on order.

Subscribe to the webhook​

Saleor Apps can subscribe to the synchronous webhooks:

  • CHECKOUT_FILTER_SHIPPING_METHODS is called whenever shipping methods are listed for a checkout
  • ORDER_FILTER_SHIPPING_METHODS is called whenever shipping methods are listed for an order
warning

Due to circular reference, subscription queries should not contain fields:

  • checkout.shippingMethods,
  • checkout.deliveryMethods,
  • order.shippingMethods.

Request format​

Example request for CHECKOUT_FILTER_SHIPPING_METHODS:

{
  "checkout": {
    "type": "Checkout",
    "id": "Q2hlY2tvdXQ6dXVpZA==",
    "channel": {
      "type": "Channel",
      "id": "Q2hhbm5lbDox",
      "slug": "default-channel",
      "currency_code": "USD"
    },
    "user": null,
    "billing_address": null,
    "shipping_address": null,
    "shipping_method": null,
    "warehouse_address": null,
    "lines": [],
    "collection_point": null,
    "meta": {
      "issued_at": "2022-02-20T21:18:55.216178+00:00",
      "version": "dev",
      "issuing_principal": {
        "id": null,
        "type": null
      }
    },
    "private_metadata": {},
    "metadata": {},
    "created": "2022-02-20T21:18:55.209Z",
    "last_change": "2022-02-20T21:18:55.209Z",
    "email": "user@email.com",
    "currency": "USD",
    "discount_amount": "0.00",
    "discount_name": null
  },
  "shipping_methods": [
    {
      "id": "U2hpcHBpbmdNZXRob2Q6MTIz",
      "price": "10.59",
      "currency": "USD",
      "name": "shipping",
      "maximum_order_weight": "10.0:kg",
      "minimum_order_weight": "1.0:g",
      "maximum_delivery_days": 10,
      "minimum_delivery_days": 2
    }
  ]
}
Expand ▼

Example request for ORDER_FILTER_SHIPPING_METHODS:

{
  "order": {
    "type": "Order",
    "id": "T3JkZXI6Mjkz",
    "channel": {
      "type": "Channel",
      "id": "Q2hhbm5lbDo1Njk=",
      "slug": "main",
      "currency_code": "USD"
    },
    "shipping_method": null,
    "payments": null,
    "shipping_address": {
      "type": "Address",
      "id": "QWRkcmVzczoxMzQz",
      "first_name": "John",
      "last_name": "Doe",
      "company_name": "Mirumee Software",
      "street_address_1": "T\u0119czowa 7",
      "street_address_2": "",
      "city": "WROC\u0141AW",
      "city_area": "",
      "postal_code": "53-601",
      "country": "PL",
      "country_area": "",
      "phone": "+48713988102"
    },
    "billing_address": {
      "type": "Address",
      "id": "QWRkcmVzczoxMzQz",
      "first_name": "John",
      "last_name": "Doe",
      "company_name": "Mirumee Software",
      "street_address_1": "T\u0119czowa 7",
      "street_address_2": "",
      "city": "WROC\u0141AW",
      "city_area": "",
      "postal_code": "53-601",
      "country": "PL",
      "country_area": "",
      "phone": "+48713988102"
    },
    "discounts": null,
    "original": "T3JkZXI6Tm9uZQ==",
    "lines": [],
    "fulfillments": [],
    "collection_point": null,
    "meta": {
      "issued_at": "2022-02-20T21:17:38.766493+00:00",
      "version": "dev",
      "issuing_principal": {
        "id": null,
        "type": null
      }
    },
    "private_metadata": {},
    "metadata": {},
    "created": "2022-02-20T21:17:38.760Z",
    "status": "unfulfilled",
    "user_email": "test@example.com",
    "origin": "checkout",
    "shipping_method_name": null,
    "collection_point_name": null,
    "shipping_price_net_amount": "0.00",
    "shipping_price_gross_amount": "0.00",
    "shipping_tax_rate": "0.0",
    "token": "b449194f-cf9c-4269-9d73-fdfa4534a140",
    "total_net_amount": "0.00",
    "undiscounted_total_net_amount": "0.00",
    "total_gross_amount": "0.00",
    "undiscounted_total_gross_amount": "0.00",
    "weight": "0.0:kg"
  },
  "shipping_methods": [
    {
      "id": "U2hpcHBpbmdNZXRob2Q6MTIz",
      "price": "10.59",
      "currency": "USD",
      "name": "shipping",
      "maximum_order_weight": "10.0:kg",
      "minimum_order_weight": "1.0:g",
      "maximum_delivery_days": 10,
      "minimum_delivery_days": 2
    }
  ]
}
Expand ▼

Response format​

This is an example response from the application:

{
  "excluded_methods": [
    {
      "id": "U2hpcHBpbmdNZXRob2Q6MQ==",
      "reason": "Same Day Delivery is no longer available."
    },
    {
      "id": "U2hpcHBpbmdNZXRob2Q6MTQ=",
      "reason": "Bulky items are not allowed for standard shipping."
    }
  ]
}

Implementation guide​

ShippingMethod objects returned by Checkout.shippingMethods and Order.shippingMethods will have 2 attributes:

  • active which is set to false when at least one of the Saleor Apps excludes the methods;
  • message which concatenates the exclusion reason coming from each of the Apps;
{
  checkout(id: "checkout-id") {
    shippingMethods {
      id
      name
      active
      message
    }
  }
}
warning

Even though external methods are also subject to filtering, we recommend integrating only one of the two approaches, as every single synchronous webhook affects the response time of your Saleor API.

Community resources​

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