a9f19815e4
* use correct serializer for singular embeds in api (almost fixes #998) * fix has_many api embeds too! * unused arg
66 lines
3 KiB
Ruby
66 lines
3 KiB
Ruby
# frozen_string_literal: true
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module Api
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module V2
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class ApplicationSerializer < ActiveModel::Serializer
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def self.embeddable
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{}
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end
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def embeds
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# subclasses can override self.embeddable, and then it will whitelist
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# scope[:embeds] based on the contents. That way scope[:embeds] can just pull
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# from params and the whitelisting happens here
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@embeds ||= (scope[:embeds] || []).select { |e| self.class.embeddable.keys.include?(e) }
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end
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# self.embeddable might look like this:
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# creator: { attr: :first_creator, serializer: UserSerializer }
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# contributors: { serializer: UserSerializer}
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# This method will remove the :attr key if the underlying attribute name
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# is different than the name provided in the final json output. All other keys
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# in the hash will be passed to the ActiveModel::Serializer `attribute` method
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# directly (e.g. serializer in the examples will be passed).
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#
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# This setup means if you passed this self.embeddable config and sent no
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# ?embed= query param with your API request, you would get the regular attributes
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# plus creator_id and contributor_ids. If you passed ?embed=creator,contributors
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# then instead of an id and an array of ids, you would get a serialized user
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# (the first_creator) and an array of serialized users (the contributors).
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def self.embed_dat
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embeddable.each_pair do |key, opts|
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attr = opts.delete(:attr) || key
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if attr.to_s.pluralize == attr.to_s
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attribute("#{attr.to_s.singularize}_ids".to_sym,
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opts.merge(unless: -> { embeds.include?(key) })) do
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Pundit.policy_scope(scope[:current_user], object.send(attr))&.map(&:id) || []
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end
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has_many(attr, opts.merge(if: -> { embeds.include?(key) })) do
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list = Pundit.policy_scope(scope[:current_user], object.send(attr)) || []
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child_serializer = "Api::V2::#{attr.to_s.singularize.camelize}Serializer".constantize
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resource = ActiveModelSerializers::SerializableResource.new(
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list,
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each_serializer: child_serializer,
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scope: scope.merge(embeds: [])
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)
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resource.as_json
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end
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else
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id_opts = opts.merge(key: "#{key}_id")
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attribute("#{attr}_id".to_sym,
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id_opts.merge(unless: -> { embeds.include?(key) }))
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attribute(key, opts.merge(if: -> { embeds.include?(key) })) do |serializer|
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object = serializer.object.send(key)
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child_serializer = "Api::V2::#{object.class.name}Serializer".constantize
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resource = ActiveModelSerializers::SerializableResource.new(
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object,
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serializer: child_serializer,
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scope: scope.merge(embeds: [])
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)
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resource.as_json
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end
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end
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end
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end
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end
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end
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end
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