mirror of
https://github.com/ditkrg/active_model_serializers.git
synced 2026-01-22 22:06:50 +00:00
73eae19b3d
Also, fix test where attributes were included when id was ""
```
1) Failure:
ActionController::Serialization::AdapterSelectorTest#test_render_using_adapter_override
[test/action_c$ntroller/adapter_selector_test.rb:53]:
--- expected
+++ actual
@@ -1 +1 @@
-"{\"data\":{\"id\":\"\",\"type\":\"profiles\",\"attributes\":{\"name\":\"Name 1\",\"description\":\"Description 1\"}}}"
+"{\"data\":null}"
```
531 lines
18 KiB
Ruby
531 lines
18 KiB
Ruby
# {http://jsonapi.org/format/ JSON API specification}
|
||
# rubocop:disable Style/AsciiComments
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# TODO: implement!
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# ☐ https://github.com/rails-api/active_model_serializers/issues/1235
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# TODO: use uri_template in link generation?
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# ☐ https://github.com/rails-api/active_model_serializers/pull/1282#discussion_r42528812
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# see gem https://github.com/hannesg/uri_template
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# spec http://tools.ietf.org/html/rfc6570
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# impl https://developer.github.com/v3/#schema https://api.github.com/
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# TODO: validate against a JSON schema document?
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# ☐ https://github.com/rails-api/active_model_serializers/issues/1162
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# ☑ https://github.com/rails-api/active_model_serializers/pull/1270
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# TODO: Routing
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# ☐ https://github.com/rails-api/active_model_serializers/pull/1476
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# TODO: Query Params
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# ☑ `include` https://github.com/rails-api/active_model_serializers/pull/1131
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# ☑ `fields` https://github.com/rails-api/active_model_serializers/pull/700
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# ☑ `page[number]=3&page[size]=1` https://github.com/rails-api/active_model_serializers/pull/1041
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# ☐ `filter`
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# ☐ `sort`
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module ActiveModelSerializers
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module Adapter
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class JsonApi < Base
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extend ActiveSupport::Autoload
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autoload :Jsonapi
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autoload :ResourceIdentifier
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autoload :Relationship
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autoload :Link
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autoload :PaginationLinks
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autoload :Meta
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autoload :Error
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autoload :Deserialization
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|
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def self.default_key_transform
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:dash
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end
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||
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def self.fragment_cache(cached_hash, non_cached_hash, root = true)
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core_cached = cached_hash.first
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core_non_cached = non_cached_hash.first
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no_root_cache = cached_hash.delete_if { |key, _value| key == core_cached[0] }
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no_root_non_cache = non_cached_hash.delete_if { |key, _value| key == core_non_cached[0] }
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cached_resource = (core_cached[1]) ? core_cached[1].deep_merge(core_non_cached[1]) : core_non_cached[1]
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hash = root ? { root => cached_resource } : cached_resource
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hash.deep_merge no_root_non_cache.deep_merge no_root_cache
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end
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def initialize(serializer, options = {})
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super
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@include_directive = JSONAPI::IncludeDirective.new(options[:include], allow_wildcard: true)
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@fieldset = options[:fieldset] || ActiveModel::Serializer::Fieldset.new(options.delete(:fields))
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end
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# {http://jsonapi.org/format/#crud Requests are transactional, i.e. success or failure}
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# {http://jsonapi.org/format/#document-top-level data and errors MUST NOT coexist in the same document.}
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def serializable_hash(*)
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document = if serializer.success?
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success_document
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else
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failure_document
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end
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self.class.transform_key_casing!(document, instance_options)
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end
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def fragment_cache(cached_hash, non_cached_hash)
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root = !instance_options.include?(:include)
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self.class.fragment_cache(cached_hash, non_cached_hash, root)
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end
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# {http://jsonapi.org/format/#document-top-level Primary data}
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# definition:
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# ☐ toplevel_data (required)
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# ☐ toplevel_included
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# ☑ toplevel_meta
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# ☑ toplevel_links
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# ☑ toplevel_jsonapi
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# structure:
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# {
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# data: toplevel_data,
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# included: toplevel_included,
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# meta: toplevel_meta,
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# links: toplevel_links,
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||
# jsonapi: toplevel_jsonapi
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# }.reject! {|_,v| v.nil? }
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# rubocop:disable Metrics/CyclomaticComplexity
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def success_document
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is_collection = serializer.respond_to?(:each)
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serializers = is_collection ? serializer : [serializer]
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primary_data, included = resource_objects_for(serializers)
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hash = {}
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# toplevel_data
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||
# definition:
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||
# oneOf
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# resource
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# array of unique items of type 'resource'
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# null
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#
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||
# description:
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||
# The document's "primary data" is a representation of the resource or collection of resources
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# targeted by a request.
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||
#
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||
# Singular: the resource object.
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#
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||
# Collection: one of an array of resource objects, an array of resource identifier objects, or
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# an empty array ([]), for requests that target resource collections.
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#
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# None: null if the request is one that might correspond to a single resource, but doesn't currently.
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# structure:
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# if serializable_resource.resource?
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# resource
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# elsif serializable_resource.collection?
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# [
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# resource,
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# resource
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||
# ]
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# else
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# nil
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# end
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hash[:data] = is_collection ? primary_data : primary_data[0]
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# toplevel_included
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# alias included
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# definition:
|
||
# array of unique items of type 'resource'
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||
#
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||
# description:
|
||
# To reduce the number of HTTP requests, servers **MAY** allow
|
||
# responses that include related resources along with the requested primary
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# resources. Such responses are called "compound documents".
|
||
# structure:
|
||
# [
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# resource,
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# resource
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# ]
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hash[:included] = included if included.any?
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Jsonapi.add!(hash)
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if instance_options[:links]
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hash[:links] ||= {}
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hash[:links].update(instance_options[:links])
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end
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if is_collection && serializer.paginated?
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hash[:links] ||= {}
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hash[:links].update(pagination_links_for(serializer))
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end
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hash[:meta] = instance_options[:meta] unless instance_options[:meta].blank?
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hash
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end
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# rubocop:enable Metrics/CyclomaticComplexity
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# {http://jsonapi.org/format/#errors JSON API Errors}
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# TODO: look into caching
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# definition:
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||
# ☑ toplevel_errors array (required)
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# ☐ toplevel_meta
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# ☐ toplevel_jsonapi
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||
# structure:
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||
# {
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# errors: toplevel_errors,
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# meta: toplevel_meta,
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# jsonapi: toplevel_jsonapi
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# }.reject! {|_,v| v.nil? }
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# prs:
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# https://github.com/rails-api/active_model_serializers/pull/1004
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def failure_document
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hash = {}
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# PR Please :)
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# Jsonapi.add!(hash)
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# toplevel_errors
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# definition:
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||
# array of unique items of type 'error'
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# structure:
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# [
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# error,
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# error
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# ]
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if serializer.respond_to?(:each)
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hash[:errors] = serializer.flat_map do |error_serializer|
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Error.resource_errors(error_serializer, instance_options)
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end
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else
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hash[:errors] = Error.resource_errors(serializer, instance_options)
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end
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hash
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end
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protected
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attr_reader :fieldset
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private
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# {http://jsonapi.org/format/#document-resource-objects Primary data}
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# resource
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# definition:
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# JSON Object
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#
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# properties:
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# type (required) : String
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# id (required) : String
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# attributes
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||
# relationships
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# links
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# meta
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#
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# description:
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# "Resource objects" appear in a JSON API document to represent resources
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# structure:
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# {
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# type: 'admin--some-user',
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# id: '1336',
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# attributes: attributes,
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# relationships: relationships,
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# links: links,
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||
# meta: meta,
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# }.reject! {|_,v| v.nil? }
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# prs:
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||
# type
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# https://github.com/rails-api/active_model_serializers/pull/1122
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# [x] https://github.com/rails-api/active_model_serializers/pull/1213
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# https://github.com/rails-api/active_model_serializers/pull/1216
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# https://github.com/rails-api/active_model_serializers/pull/1029
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# links
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# [x] https://github.com/rails-api/active_model_serializers/pull/1246
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# [x] url helpers https://github.com/rails-api/active_model_serializers/issues/1269
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# meta
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||
# [x] https://github.com/rails-api/active_model_serializers/pull/1340
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def resource_objects_for(serializers)
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@primary = []
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@included = []
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@resource_identifiers = Set.new
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serializers.each { |serializer| process_resource(serializer, true, @include_directive) }
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serializers.each { |serializer| process_relationships(serializer, @include_directive) }
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[@primary, @included]
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end
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def process_resource(serializer, primary, include_slice = {})
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resource_identifier = ResourceIdentifier.new(serializer, instance_options).as_json
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return false unless @resource_identifiers.add?(resource_identifier)
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resource_object = resource_object_for(serializer, include_slice)
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if primary
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@primary << resource_object
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else
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@included << resource_object
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end
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true
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end
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def process_relationships(serializer, include_slice)
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serializer.associations(include_slice).each do |association|
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# TODO(BF): Process relationship without evaluating lazy_association
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process_relationship(association.lazy_association.serializer, include_slice[association.key])
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end
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end
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def process_relationship(serializer, include_slice)
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if serializer.respond_to?(:each)
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serializer.each { |s| process_relationship(s, include_slice) }
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||
return
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end
|
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return unless serializer && serializer.object
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||
return unless process_resource(serializer, false, include_slice)
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process_relationships(serializer, include_slice)
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end
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|
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# {http://jsonapi.org/format/#document-resource-object-attributes Document Resource Object Attributes}
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# attributes
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# definition:
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# JSON Object
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#
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# patternProperties:
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# ^(?!relationships$|links$)\\w[-\\w_]*$
|
||
#
|
||
# description:
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||
# Members of the attributes object ("attributes") represent information about the resource
|
||
# object in which it's defined.
|
||
# Attributes may contain any valid JSON value
|
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# structure:
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||
# {
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||
# foo: 'bar'
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# }
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def attributes_for(serializer, fields)
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serializer.attributes(fields).except(:id)
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end
|
||
|
||
# {http://jsonapi.org/format/#document-resource-objects Document Resource Objects}
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||
def resource_object_for(serializer, include_slice = {})
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resource_object = data_for(serializer, include_slice)
|
||
|
||
# toplevel_links
|
||
# definition:
|
||
# allOf
|
||
# ☐ links
|
||
# ☐ pagination
|
||
#
|
||
# description:
|
||
# Link members related to the primary data.
|
||
# structure:
|
||
# links.merge!(pagination)
|
||
# prs:
|
||
# https://github.com/rails-api/active_model_serializers/pull/1247
|
||
# https://github.com/rails-api/active_model_serializers/pull/1018
|
||
if (links = links_for(serializer)).any?
|
||
resource_object ||= {}
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resource_object[:links] = links
|
||
end
|
||
|
||
# toplevel_meta
|
||
# alias meta
|
||
# definition:
|
||
# meta
|
||
# structure
|
||
# {
|
||
# :'git-ref' => 'abc123'
|
||
# }
|
||
if (meta = meta_for(serializer)).present?
|
||
resource_object ||= {}
|
||
resource_object[:meta] = meta
|
||
end
|
||
|
||
resource_object
|
||
end
|
||
|
||
def data_for(serializer, include_slice)
|
||
data = serializer.fetch(self) do
|
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resource_object = ResourceIdentifier.new(serializer, instance_options).as_json
|
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break nil if resource_object.nil?
|
||
|
||
requested_fields = fieldset && fieldset.fields_for(resource_object[:type])
|
||
attributes = attributes_for(serializer, requested_fields)
|
||
resource_object[:attributes] = attributes if attributes.any?
|
||
resource_object
|
||
end
|
||
data.tap do |resource_object|
|
||
next if resource_object.nil?
|
||
# NOTE(BF): the attributes are cached above, separately from the relationships, below.
|
||
requested_associations = fieldset.fields_for(resource_object[:type]) || '*'
|
||
relationships = relationships_for(serializer, requested_associations, include_slice)
|
||
resource_object[:relationships] = relationships if relationships.any?
|
||
end
|
||
end
|
||
|
||
# {http://jsonapi.org/format/#document-resource-object-relationships Document Resource Object Relationship}
|
||
# relationships
|
||
# definition:
|
||
# JSON Object
|
||
#
|
||
# patternProperties:
|
||
# ^\\w[-\\w_]*$"
|
||
#
|
||
# properties:
|
||
# data : relationshipsData
|
||
# links
|
||
# meta
|
||
#
|
||
# description:
|
||
#
|
||
# Members of the relationships object ("relationships") represent references from the
|
||
# resource object in which it's defined to other resource objects."
|
||
# structure:
|
||
# {
|
||
# links: links,
|
||
# meta: meta,
|
||
# data: relationshipsData
|
||
# }.reject! {|_,v| v.nil? }
|
||
#
|
||
# prs:
|
||
# links
|
||
# [x] https://github.com/rails-api/active_model_serializers/pull/1454
|
||
# meta
|
||
# [x] https://github.com/rails-api/active_model_serializers/pull/1454
|
||
# polymorphic
|
||
# [ ] https://github.com/rails-api/active_model_serializers/pull/1420
|
||
#
|
||
# relationshipsData
|
||
# definition:
|
||
# oneOf
|
||
# relationshipToOne
|
||
# relationshipToMany
|
||
#
|
||
# description:
|
||
# Member, whose value represents "resource linkage"
|
||
# structure:
|
||
# if has_one?
|
||
# relationshipToOne
|
||
# else
|
||
# relationshipToMany
|
||
# end
|
||
#
|
||
# definition:
|
||
# anyOf
|
||
# null
|
||
# linkage
|
||
#
|
||
# relationshipToOne
|
||
# description:
|
||
#
|
||
# References to other resource objects in a to-one ("relationship"). Relationships can be
|
||
# specified by including a member in a resource's links object.
|
||
#
|
||
# None: Describes an empty to-one relationship.
|
||
# structure:
|
||
# if has_related?
|
||
# linkage
|
||
# else
|
||
# nil
|
||
# end
|
||
#
|
||
# relationshipToMany
|
||
# definition:
|
||
# array of unique items of type 'linkage'
|
||
#
|
||
# description:
|
||
# An array of objects each containing "type" and "id" members for to-many relationships
|
||
# structure:
|
||
# [
|
||
# linkage,
|
||
# linkage
|
||
# ]
|
||
# prs:
|
||
# polymorphic
|
||
# [ ] https://github.com/rails-api/active_model_serializers/pull/1282
|
||
#
|
||
# linkage
|
||
# definition:
|
||
# type (required) : String
|
||
# id (required) : String
|
||
# meta
|
||
#
|
||
# description:
|
||
# The "type" and "id" to non-empty members.
|
||
# structure:
|
||
# {
|
||
# type: 'required-type',
|
||
# id: 'required-id',
|
||
# meta: meta
|
||
# }.reject! {|_,v| v.nil? }
|
||
def relationships_for(serializer, requested_associations, include_slice)
|
||
include_directive = JSONAPI::IncludeDirective.new(
|
||
requested_associations,
|
||
allow_wildcard: true
|
||
)
|
||
serializer.associations(include_directive, include_slice).each_with_object({}) do |association, hash|
|
||
hash[association.key] = Relationship.new(serializer, instance_options, association).as_json
|
||
end
|
||
end
|
||
|
||
# {http://jsonapi.org/format/#document-links Document Links}
|
||
# links
|
||
# definition:
|
||
# JSON Object
|
||
#
|
||
# properties:
|
||
# self : URI
|
||
# related : link
|
||
#
|
||
# description:
|
||
# A resource object **MAY** contain references to other resource objects ("relationships").
|
||
# Relationships may be to-one or to-many. Relationships can be specified by including a member
|
||
# in a resource's links object.
|
||
#
|
||
# A `self` member’s value is a URL for the relationship itself (a "relationship URL"). This
|
||
# URL allows the client to directly manipulate the relationship. For example, it would allow
|
||
# a client to remove an `author` from an `article` without deleting the people resource
|
||
# itself.
|
||
# structure:
|
||
# {
|
||
# self: 'http://example.com/etc',
|
||
# related: link
|
||
# }.reject! {|_,v| v.nil? }
|
||
def links_for(serializer)
|
||
serializer._links.each_with_object({}) do |(name, value), hash|
|
||
result = Link.new(serializer, value).as_json
|
||
hash[name] = result if result
|
||
end
|
||
end
|
||
|
||
# {http://jsonapi.org/format/#fetching-pagination Pagination Links}
|
||
# pagination
|
||
# definition:
|
||
# first : pageObject
|
||
# last : pageObject
|
||
# prev : pageObject
|
||
# next : pageObject
|
||
# structure:
|
||
# {
|
||
# first: pageObject,
|
||
# last: pageObject,
|
||
# prev: pageObject,
|
||
# next: pageObject
|
||
# }
|
||
#
|
||
# pageObject
|
||
# definition:
|
||
# oneOf
|
||
# URI
|
||
# null
|
||
#
|
||
# description:
|
||
# The <x> page of data
|
||
# structure:
|
||
# if has_page?
|
||
# 'http://example.com/some-page?page[number][x]'
|
||
# else
|
||
# nil
|
||
# end
|
||
# prs:
|
||
# https://github.com/rails-api/active_model_serializers/pull/1041
|
||
def pagination_links_for(serializer)
|
||
PaginationLinks.new(serializer.object, instance_options).as_json
|
||
end
|
||
|
||
# {http://jsonapi.org/format/#document-meta Docment Meta}
|
||
def meta_for(serializer)
|
||
Meta.new(serializer).as_json
|
||
end
|
||
end
|
||
end
|
||
end
|
||
# rubocop:enable Style/AsciiComments
|