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February 22, 2018 18:21
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Parses camelCase arguments into snake_case for GraphQL Ruby
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| class CamelCaseMiddleware | |
| def call(parent_type, parent_object, field_definition, field_args, query_context, next_middleware) | |
| next_middleware.call([parent_type, parent_object, field_definition, transform_arguments(field_args), query_context]) | |
| end | |
| def transform_arguments(field_args) | |
| transformed_args = {} | |
| types = {} | |
| field_args.each_value do |arg_value| | |
| key = arg_value.key.to_s | |
| unless key == "clientMutationId" | |
| key = key.underscore | |
| end | |
| transformed_args[key] = transform_value(arg_value.value) | |
| types[key] = arg_value.definition | |
| end | |
| GraphQL::Query::Arguments.new(transformed_args, argument_definitions: types) | |
| end | |
| def transform_value(value) | |
| case value | |
| when Array | |
| value.map { |v| transform_value(v) } | |
| when Hash | |
| Hash[value.map { |k, v| [underscore_key(k), convert_hash_keys(v)] }] | |
| when GraphQL::Query::Arguments | |
| transform_arguments(value) | |
| else | |
| value | |
| end | |
| end | |
| end |
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How to integrate it?