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# frozen_string_literal: true
module Gitlab
module Graphql
module CopyFieldDescription
extend ActiveSupport::Concern
class_methods do
# Returns the `description` for property of field `field_name` on type.
# This can be used to ensure, for example, that mutation argument descriptions
# are always identical to the corresponding query field descriptions.
#
# E.g.:
# argument :name, GraphQL::Types::String, description: copy_field_description(Types::UserType, :name)
def copy_field_description(type, field_name)
type.fields[field_name.to_s.camelize(:lower)].description
end
end
end
end
end
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