type-graphql字段类型“ Int”和“ Number”之间的区别

Question

type-graphql类型Int和Number有什么区别？ 我想使用纯整数作为我的graphql参数（例如1，而不是“ 1”或1.0）。

@GQL.Field(type => Number)

另外，我观察到的是当我将参数类型设置为“ Number”时，出现在graphql-playground中的架构将这些参数类型显示为float。

@GQL.Mutation(returns => Booking)
public async addBooking(
@GQL.Arg("user") user: number,
@GQL.Arg("bookingType") bookingType: number,
@GQL.Arg("start") start: Date,
@GQL.Arg("end") end: Date,
@GQL.Arg("bookingPackage", { nullable: true }) bookingPackage?: number,
@GQL.Arg("bookingAddons", type  => [ Number, ], { nullable: true, }) bookingAddons?: number[],
@GQL.Arg("payment", { nullable: true }) payment?: number
) {

let booking = new Booking()
booking.user = user
booking.bookingType = bookingType
booking.start = start
booking.end = end
if (bookingPackage) booking.bookingPackage = bookingPackage
if (bookingAddons) booking.bookingAddons = bookingAddons
if (payment) booking.payment = payment

await booking.save()
return booking
}

出现在graphql-playground中的Schema：

addBooking(
payment: Float
bookingAddons: [Float!]
bookingPackage: Float
end: DateTime!
start: DateTime!
bookingType: Float!
user: Float!
): Booking!

Answer 1

https://19majkel94.github.io/type-graphql/docs/scalars.html#aliases

JavaScript编号将自动在架构中变为GraphQLFloat

这是因为JS中的number表示为双精度，所以Number = Float。 如果您需要一个int，请使用Int 。