问GraphQL -使用对象作为参数
EN

Stack Overflow用户

提问于 2021-03-06 14:28:06

回答 1查看 77关注 0票数 0

我正在使用GraphQL构建一个API，API的一个选项是下订单。

我使用带有graphql-go的Go 1.16作为GraphQL后端

PlaceOrder API调用的JSON格式为：

{
   "order_reference":"unique order reference",
   "customer_order_reference":"customer order reference",
   "email_address":"email@example.com",
   "phone_number":"0123456789",
   "billing_address":{
      "name":"Billing name",
      "address_line_one":"Billing line one",
      "address_line_two":"Billing line two",
      "address_line_three":"Billing line three",
      "address_line_four":"Billing line four",
      "postcode":"billing postcode"
   },
   "delivery_address":{
      "name":"Delivery name",
      "address_line_one":"Delivery line one",
      "address_line_two":"Delivery line two",
      "address_line_three":"Delivery line three",
      "address_line_four":"Delivery line four",
      "postcode":"Delivery postcode"
   },
   "order_lines":[
      {
         "product_code":"123456",
         "quantity":1
      },
      {
         "product_code":"654321",
         "quantity":2
      }
   ]
}

在Go代码中，我将Schema字段设置为：

graphql.Fields{
        "placeOrder": &graphql.Field{
            Type: order.PlaceOrder(),
            Args: graphql.FieldConfigArgument{
                "order_reference": &graphql.ArgumentConfig{
                    Type: graphql.String,
                },
                "customer_order_reference": &graphql.ArgumentConfig{
                    Type: graphql.String,
                },
                "email_address": &graphql.ArgumentConfig{
                    Type: graphql.String,
                },
                "phone_number": &graphql.ArgumentConfig{
                    Type: graphql.String,
                },
                "billing_address": &graphql.ArgumentConfig{
                    Type: graphql.NewObject(
                        graphql.ObjectConfig{
                            Name: "BillingAddress",
                            Fields: graphql.Fields{
                                "name": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_one": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_two": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_three": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_four": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "postcode": &graphql.Field{
                                    Type: graphql.String,
                                },
                            },
                        },
                    ),
                },
                "delivery_address": &graphql.ArgumentConfig{
                    Type: graphql.NewObject(
                        graphql.ObjectConfig{
                            Name: "DeliveryAddress",
                            Fields: graphql.Fields{
                                "name": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_one": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_two": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_three": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "address_line_four": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "postcode": &graphql.Field{
                                    Type: graphql.String,
                                },
                            },
                        },
                    ),
                },
                "order_lines": &graphql.ArgumentConfig{
                    Type: graphql.NewList(graphql.NewObject(
                        graphql.ObjectConfig{
                            Name: "Line",
                            Fields: graphql.Fields{
                                "part_number": &graphql.Field{
                                    Type: graphql.String,
                                },
                                "quantity": &graphql.Field{
                                    Type: graphql.String,
                                },
                            },
                        },
                    )),
                },
            },
            Resolve: func(p graphql.ResolveParams) (interface{}, error) {
                // Code to interact with Database and assign value to status, reference depending on result of database INSERT and return as "response"
                return response, nil
            },
        },
    }

我尝试了几种不同的方法将数据传递到地址和订单行，但似乎不能成功传递它们:例如，我尝试了下面的方法，map[]是fmt.Printf("%+v\n", p.Args)的结果

查询：

{
    placeOrder(
        order_reference:"order reference"
        customer_order_reference: "cust order reference"
        billing_address: {
           name: "Billing Name"
           address_line_one: "Address line one"
           address_line_two: "Address line one"
           address_line_three: "Address line one"
           address_line_four: "Address line one"
           postcode: "Post code"
        }
        delivery_address: {
           name: "Delivery Name"
           address_line_one: "Address line one"
           address_line_two: "Address line one"
           address_line_three: "Address line one"
           address_line_four: "Address line one"
           postcode: "Post code"
        }
        order_lines: [
            {
                part_number: "123456"
                quantity: 1
            }
        ]
        ){
            status,
            reference
        }
}

结果：

map[
customer_order_reference:cust order reference
order_lines:[<nil>]
order_reference:order reference
]

graphql

graphql-go

回答 1

Stack Overflow用户

回答已采纳

发布于 2021-03-09 12:01:14

答案由@xadm提供

在https://stackoverflow.com/a/41230015/6124657中突出显示的解决方案

var InputType = graphql.NewInputObject(
    graphql.InputObjectConfig{
        Name: "InputTypeName",
        Fields: graphql.InputObjectConfigFieldMap{
            "sub_field_one": &graphql.InputObjectFieldConfig{
                Type: graphql.String,
            },
            "sub_field_two": &graphql.InputObjectFieldConfig{
                Type: graphql.String,
            },
        },
    },
)

在Args部分中，替换原始的NewObject(...)使用NewInputObject(...)

"billing_address": &graphql.ArgumentConfig{
                Type: graphql.NewInputObject(
                    graphql.InputObjectConfig{
                        Name: "BillingAddress",
                        Fields: graphql.InputObjectConfigFieldMap{
                            "address_line_one": &graphql.InputObjectFieldConfig{
                                Type: graphql.String,
                            },
                            "address_line_two": &graphql.InputObjectFieldConfig{
                                Type: graphql.String,
                            },
                           ...
                        },
                    },
                ),
            },