Field Default Value

@default directive, to set a value to null or empty fields.

​

Description

Directive @default accepts two arguments:

1. value: the default value, from any scalar type (string, boolean, integer, float or ID).
2. condition: if the field must be null or empty, via enum values IS_NULL or IS_EMPTY. By default it is null.

In the example below, when a post does not have a featured image, field featuredImage returns null:

{
  post(by: { id: 1 }) {
    featuredImage {
      id
      src
    }
  }
}Copy

{
  "data": {
    "post": {
      "featuredImage": null
    }
  }
}Copy

By using @default, we can then retrieve some default image:

{
  post(by: { id: 1 }) {
    featuredImage @default(value: 55) {
      id
      src
    }
  }
}Copy

{
  "data": {
    "post": {
      "featuredImage": {
        "id": 55,
        "src": "http://mysite.com/wp-content/uploads/my-default-image.png"
      }
    }
  }
}Copy