GraphQL Args错误:参数类型必须是输入类型但得到:函数GraphQLObjectType(config){

Question

在服务器start(node index.js)上,我的GraphQL NodeJS服务器出现以下错误:

错误:Query.payment(data :)参数类型必须是输入类型但得到:函数GraphQLObjectType(config){_ classCallCheck(this,GraphQLObjectType);

当我从字符串中更改原始args时发生此错误

        args: {
            data: { type: graphQL.GraphQLString }
        },

对象类型:

        args: {
            data: { type: graphQL.GraphQLObjectType }
        },

我需要一个对象类型,因为我需要发送几个字段作为参数.

GraphQL服务器:

var Query = new graphQL.GraphQLObjectType({
    name: 'Query',
    fields: {
        payment: {
            type: graphQL.GraphQLString,
            args: {
                data: { type: graphQL.GraphQLObjectType }
            },
            resolve: function (_, args) {
                // There will be more data here, 
                // but ultimately I want to return a string
                return 'success!';
            }
        }
    }
});

我如何允许它接受一个对象？

---

前端(如果需要.但错误发生在我发送之前):

var userQuery = encodeURIComponent('{ payment ( data: { user : "test" } )}');

$.get('http://localhost:4000/graphql?query=' + userQuery, function (res) {
       //stuff
});

Answer 1

如果你想使用Object作为参数,你应该使用GraphQLInputObjectType而不是GraphQLObjectType.请记住,GraphQL是基于强类型的,因此不允许使用泛型GraphQLObjectType作为arg类型,然后动态查询args.您必须在此输入对象中显式定义所有可能的字段(并选择哪些字段是强制的,哪些不是)

尝试使用这种方法:

// your arg input object
var inputType = new GraphQLInputObjectType({
    name: 'paymentInput',
    fields: {
        user: {
            type: new GraphQLNonNull(GraphQLString)
        },
        order: {
            type: GraphQLString
        },
        ...another fields
    }
});

var Query = new graphQL.GraphQLObjectType({
    name: 'Query',
    fields: {
        payment: {
            type: graphQL.GraphQLString,
            args: {
                data: { type: new GraphQLNonNull(inputType) }
            },
            resolve: function (_, args) {
                // There will be more data here,
                // but ultimately I want to return a string
                return 'success!';
            }
        }
    }
});