Class: GraphQL::StaticValidation::VariableDefaultValuesAreCorrectlyTyped

Inherits:
Object
  • Object
show all
Includes:
Message::MessageHelper
Defined in:
lib/graphql/static_validation/rules/variable_default_values_are_correctly_typed.rb

Instance Method Summary collapse

Methods included from Message::MessageHelper

#message

Instance Method Details

#validate(context) ⇒ Object 



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# File 'lib/graphql/static_validation/rules/variable_default_values_are_correctly_typed.rb', line 4

def validate(context)
  literal_validator = GraphQL::StaticValidation::LiteralValidator.new
  context.visitor[GraphQL::Language::Nodes::Variable] << -> (node, parent) {
    if !node.default_value.nil?
      validate_default_value(node, literal_validator, context)
    end
  }
end

#validate_default_value(node, literal_validator, context) ⇒ Object 



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# File 'lib/graphql/static_validation/rules/variable_default_values_are_correctly_typed.rb', line 13

def validate_default_value(node, literal_validator, context)
  value = node.default_value
  if node.type.is_a?(GraphQL::Language::Nodes::NonNullType)
    context.errors << message("Non-null variable $#{node.name} can't have a default value", node)
  else
    type = context.schema.types[node.type.name]
    if !literal_validator.validate(value, type)
      context.errors << message("Default value for $#{node.name} doesn't match type #{node.type.name}", node)
    end
  end
end