數組中類型為graphql的對象的GraphQL字段

Question

我在這里定義了一個graphQL對象：

const graphql = require('graphql');
const { GraphQLObjectType } = require('graphql');

const ProductType = new GraphQLObjectType({
    name: 'Product',
    description: 'Product GraphQL Object Schemal Model',
    fields: {
        productId: { type: graphql.GraphQLString },
        SKU: { type: graphql.GraphQLString },
        quantity: { type: graphql.GraphQLFloat },
        unitaryPrice:  { type: graphql.GraphQLFloat },
        subTotal: { type: graphql.GraphQLFloat },
        discount: { type: graphql.GraphQLFloat },
        totalBeforeTax: { type: graphql.GraphQLFloat },
        isTaxAplicable: { type: graphql.GraphQLBoolean },
        unitaryTax: { type: graphql.GraphQLFloat },
        totalTax: { type: graphql.GraphQLFloat }
    }
});

module.exports.ProductType = { ProductType };

然后，我想在另一個GraphQL對象中使用此ProductType，但是我需要將該對象作為數組結構，如下所示：

const graphql = require('graphql');
const { GraphQLObjectType } = require('graphql');

const { ProductType } = require('./product');

const ShoppingCartType = new GraphQLObjectType({
    name: 'ShoppingCart',
    description: 'Shopping Cart GraphQL Object Schema Model',
    fields: {
        cartId: { type: graphql.GraphQLString },
        userId: { type: graphql.GraphQLString },
        products: [{ type: ProductType }]
    }
});

module.exports.ShoppingCartType = { ShoppingCartType };

這可能嗎？

Answer 1

您需要使用GraphQLList包裝器包裝現有類型，如下所示：

products: { type: new GraphQLList(ProductType) }