active_model_serializers/docs/general/configuration_options.md

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# Configuration Options
The following configuration options can be set on `ActiveModelSerializers.config`,
preferably inside an initializer.
## General
- `adapter`: The [adapter](adapters.md) to use. Possible values: `:attributes, :json, :json_api`. Default: `:attributes`.
- `serializer_lookup_enabled`: When `false`, serializers must be explicitly specified. Default: `true`
## JSON API
- `jsonapi_resource_type`: Whether the `type` attributes of resources should be singular or plural. Possible values: `:singular, :plural`. Default: `:plural`.
- `jsonapi_include_toplevel_object`: Whether to include a [top level JSON API member](http://jsonapi.org/format/#document-jsonapi-object)
in the response document.
Default: `false`.
- Used when `jsonapi_include_toplevel_object` is `true`:
- `jsonapi_version`: The latest version of the spec the API conforms to.
Default: `'1.0'`.
- `jsonapi_toplevel_meta`: Optional metadata. Not included if empty.
Default: `{}`.
## Hooks
To run a hook when ActiveModelSerializers is loaded, use `ActiveSupport.on_load(:action_controller) do end`