graphql-go:使用Object作为查询的输入参数

时间:2016-11-01 13:21:11

标签: go graphql

我正在尝试将对象作为参数传递给查询(而不是标量)。从文档看来,这应该是可能的,但我无法弄清楚如何使它工作。

我正在使用graphql-go,这是测试架构:

var fileDocumentType = graphql.NewObject(graphql.ObjectConfig{
Name: "FileDocument",
Fields: graphql.Fields{
    "id": &graphql.Field{
        Type: graphql.String,
        Resolve: func(p graphql.ResolveParams) (interface{}, error) {
            if fileDoc, ok := p.Source.(data_format.FileDocument); ok {
                return fileDoc.Id, nil
            }
            return "", nil
        },
    },
    "tags": &graphql.Field{
        Type: graphql.NewList(tagsDataType),
        Args: graphql.FieldConfigArgument{
            "tags": &graphql.ArgumentConfig{
                Type: tagsInputType,
            },
        },
        Resolve: func(p graphql.ResolveParams) (interface{}, error) {
            fmt.Println(p.Source)
            fmt.Println(p.Args)
            if fileDoc, ok := p.Source.(data_format.FileDocument); ok {
                return fileDoc.Tags, nil
            }
            return nil, nil
        },
    },

},
})

我试图使用的输入类型(我已尝试过InputObject和标准对象)

var tagsInputType = graphql.NewInputObject(graphql.InputObjectConfig{
Name: "tagsInput",
Fields: graphql.Fields{
    "keyt": &graphql.Field{
        Type: graphql.String,
    },
    "valuet": &graphql.Field{
        Type: graphql.String,
    },
},
})

这是我用来测试的graphql查询:

{
        list(location:"blah",rule:"blah")
        {
            id,tags(tags:{keyt:"test",valuet:"test"})
            {
                key,
                value
            },
            {
                datacentre,
                handlerData
                {
                    key,
                    value
                }
            }
        }
    }

我收到以下错误:

wrong result, unexpected errors: [Argument "tags" has invalid value {keyt: "test", valuet: "test"}.
In field "keyt": Unknown field.
In field "valuet": Unknown field.]

问题是,当我将类型更改为字符串时,它工作正常。如何将对象用作输入arg?

谢谢!

1 个答案:

答案 0 :(得分:16)

有同样的问题。这是我通过graphql-go源找到的内容。

Fields的{​​{1}}必须为InputObjectInputObjectConfigFieldMap,才能使pkg正常工作。

所以InputObjectConfigFieldMapThunk看起来像这样:

InputObject

修改Hello World示例以获取var inputType = graphql.NewInputObject( graphql.InputObjectConfig{ Name: "MyInputType", Fields: graphql.InputObjectConfigFieldMap{ "key": &graphql.InputObjectFieldConfig{ Type: graphql.String, }, }, }, )

Input Object