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101 lines
2.1 KiB
Markdown
101 lines
2.1 KiB
Markdown
[Back to Guides](../README.md)
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# Configuration Options
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The following configuration options can be set on
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`ActiveModelSerializers.config`, preferably inside an initializer.
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## General
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##### adapter
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The [adapter](adapters.md) to use.
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Possible values:
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- `:attributes` (default)
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- `:json`
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- `:json_api`
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##### serializer_lookup_enabled
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Enable automatic serializer lookup.
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Possible values:
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- `true` (default)
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- `false`
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When `false`, serializers must be explicitly specified.
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##### key_transform
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The [key transform](key_transforms.md) to use.
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| Option | Result |
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|----|----|
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| `:camel` | ExampleKey |
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| `:camel_lower` | exampleKey |
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| `:dash` | example-key |
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| `:unaltered` | the original, unaltered key |
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| `:underscore` | example_key |
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| `nil` | use the adapter default |
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Each adapter has a default key transform configured:
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| Adapter | Default Key Transform |
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|----|----|
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| `Json` | `:unaltered` |
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| `JsonApi` | `:dash` |
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`config.key_transform` is a global override of the adapter default. Adapters
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still prefer the render option `:key_transform` over this setting.
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## JSON API
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##### jsonapi_resource_type
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Sets whether the [type](http://jsonapi.org/format/#document-resource-identifier-objects)
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of the resource should be `singularized` or `pluralized` when it is not
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[explicitly specified by the serializer](https://github.com/rails-api/active_model_serializers/blob/master/docs/general/serializers.md#type)
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Possible values:
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- `:singular`
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- `:plural` (default)
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##### jsonapi_include_toplevel_object
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Include a [top level jsonapi member](http://jsonapi.org/format/#document-jsonapi-object)
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in the response document.
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Possible values:
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- `true`
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- `false` (default)
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##### jsonapi_version
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The latest version of the spec to which the API conforms.
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Default: `'1.0'`.
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*Used when `jsonapi_include_toplevel_object` is `true`*
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##### jsonapi_toplevel_meta
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Optional top-level metadata. Not included if empty.
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Default: `{}`.
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*Used when `jsonapi_include_toplevel_object` is `true`*
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## Hooks
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To run a hook when ActiveModelSerializers is loaded, use
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`ActiveSupport.on_load(:action_controller) do end`
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