35 lines
913 B
Ruby
35 lines
913 B
Ruby
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module Gitlab
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module Graphql
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class Present
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PRESENT_USING = -> (type, presenter_class, *args) do
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type.metadata[:presenter_class] = presenter_class
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end
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INSTRUMENT_PROC = -> (schema) do
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schema.instrument(:field, new)
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end
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def self.register!
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GraphQL::Schema.accepts_definitions(enable_presenting: INSTRUMENT_PROC)
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GraphQL::ObjectType.accepts_definitions(present_using: PRESENT_USING)
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end
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def instrument(type, field)
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return field unless type.metadata[:presenter_class]
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old_resolver = field.resolve_proc
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resolve_with_presenter = -> (obj, args, context) do
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presenter = type.metadata[:presenter_class].new(obj, **context.to_h)
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old_resolver.call(presenter, args, context)
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end
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field.redefine do
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resolve(resolve_with_presenter)
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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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