Fields

This is the last active development release of this package as Keystone 5 is now in a 6 to 12 month active maintenance phase. For more information please read our Keystone 5 and beyond post.

Keystone contains a set of primitive fields types that can be imported from the @keystonejs/fields package:

In addition to these, some complex types are packaged separately:

Tip: Need something else? Keystone lets you create custom field types to support almost any use case.

Usage

Fields definitions are provided when creating a list. Field definitions should be an object where the key is the field name and the value is an object containing the fields config:

const { Text } = require('@keystonejs/fields');

keystone.createList('Post', {
  fields: {
    title: { type: Text },
  },
});

Config

Fields share some standard configuration options.

Note: Many field types have additional config options. See the documentation for individual field types for more detail.

type

A valid Keystone field type.

label

Sets the label for the field in the AdminUI

adminDoc

A description of the field used in the AdminUI.

schemaDoc

A description of the field used used in the GraphQL schema.

adminConfig

Additional field configs affecting field rendering or display in admin-ui.

adminConfig.isReadOnly

Fields with isReadOnly set to true will be disabled preventing users from modifying them in the Admin UI. This does not affect access control and fields can still be updated via GraphQL.

keystone.createList('Post', {
  fields: {
    title: { type: Text },
    slug: {
      type: Slug,
      adminConfig: {
        isReadOnly: true, //slug can be created automatically and you may want to show this as read only
      },
    },
  },
});

defaultValue

Sets the value when no data is provided.

keystone.createList('Post', {
  fields: {
    title: {
      type: Text,
      defaultValue: ({ context, originalInput }) => {
        /**/
      },
    },
    description: { type: Text, defaultValue: 'Lorem ipsum...' },
  },
});

For a 'nullable' field, set defaultValue: null.

The defaultValue can be a String or Function. Functions should returns the value, or a Promise for the value.

isUnique

Specifies whether the value should be unique or not. Will return an error is a user tries to create a field with a non-unique value.

isRequired

Specifies whether the field is required or not. Will return an error if mutations do not contain data.

access

Access control options for fields.

Options for create, read, update and delete - can be a function or Boolean. See the access control API documentation for more details.

Note: Field level access control does not accept graphQL where clauses.

cacheHint

HTTP cache hint for field.

Only static hints are supported for fields.