GraphQL Core Schema

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Architecture ​

Maximum Configurability ​

You have the flexibility to choose which entity types and fields should be included in the schema. By default, no query or mutation fields are provided to expose content.

Following Drupal Core ​

The majority of the generated schema aligns with Drupal's entity and field system:

  • Entity interface for all entities
  • EntityTranslatable interface for all translatable entities
  • FieldItemList interface for each field
  • FieldItemType interface for each field item

Easy Extensibility ​

The generated schema serves as a solid foundation for further extension. For instance, a type is generated for the datetime field type:

graphql
type FieldItemTypeDatetime implements FieldItemType {
  isEmpty: Boolean!
  value: String
}

Now, schema extensions can effortlessly add additional fields to this type.

graphql
extend type FieldItemTypeDatetime {
  formatted(format: String): String!
}

Schema Generation Process ​

The module is fully compatible with the contrib GraphQL module and includes a custom schema called core_composable that offers a default schema.

  1. The base definitions of all extensions are parsed.
  2. The EntitySchemaBuilder generates the interfaces and types for selected entity types.
  3. The schema is converted to a string.
  4. The contents of the *.extension.graphqls files are applied to the schema.
  5. Finally, the schema is generated.