Module: GraphQL::StaticValidation::VariableDefaultValuesAreCorrectlyTyped

Defined in:
lib/graphql/static_validation/rules/variable_default_values_are_correctly_typed.rb

Instance Method Summary collapse

Instance Method Details

#on_variable_definition(node, parent) ⇒ Object 



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# File 'lib/graphql/static_validation/rules/variable_default_values_are_correctly_typed.rb', line 5

def on_variable_definition(node, parent)
  if !node.default_value.nil?
    value = node.default_value
    type = context.schema.type_from_ast(node.type, context: context)
    if type.nil?
      # This is handled by another validator
    else
      validation_result = context.validate_literal(value, type)

      if !validation_result.valid?
        problems = validation_result.problems
        first_problem = problems && problems.first
        if first_problem
          error_message = first_problem["explanation"]
        end

        error_message ||= "Default value for $#{node.name} doesn't match type #{type.to_type_signature}"
        add_error(GraphQL::StaticValidation::VariableDefaultValuesAreCorrectlyTypedError.new(
          error_message,
          nodes: node,
          name: node.name,
          type: type.to_type_signature,
          error_type: VariableDefaultValuesAreCorrectlyTypedError::VIOLATIONS[:INVALID_TYPE],
        ))
      end
    end
  end

  super
end