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Contents
# frozen_string_literal: true
module GraphQL
module Relay
class Mutation
# Wrap a user-provided resolve function,
# wrapping the returned value in a {Mutation::Result}.
# Also, pass the `clientMutationId` to that result object.
# @api private
class Resolve
def initialize(mutation, resolve)
@mutation = mutation
@resolve = resolve
@wrap_result = mutation.has_generated_return_type?
end
def call(obj, args, ctx)
mutation_result = begin
@resolve.call(obj, args[:input], ctx)
rescue GraphQL::ExecutionError => err
err
end
if ctx.schema.lazy?(mutation_result)
mutation_result
else
build_result(mutation_result, args, ctx)
end
end
private
def build_result(mutation_result, args, ctx)
if mutation_result.is_a?(GraphQL::ExecutionError)
ctx.add_error(mutation_result)
mutation_result = nil
end
if mutation_result.nil?
nil
elsif @wrap_result
if mutation_result && !mutation_result.is_a?(Hash)
raise StandardError, "Expected `#{mutation_result}` to be a Hash."\
" Return a hash when using `return_field` or specify a custom `return_type`."
end
@mutation.result_class.new(client_mutation_id: args[:input][:clientMutationId], result: mutation_result)
else
mutation_result
end
end
end
end
end
end
Version data entries
33 entries across 33 versions & 1 rubygems