GraphQL语句

最新推荐文章于 2025-07-10 22:29:30 发布

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最新推荐文章于 2025-07-10 22:29:30 发布

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分类专栏： GraphQL 文章标签： GraphQL

本文链接：https://blog.youkuaiyun.com/weixin_40317114/article/details/88862516

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1 篇文章

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这篇博客深入探讨了GraphQL查询语句的使用，特别是如何通过语句获取最外层node的fields信息，这对于理解GraphQL的数据获取机制至关重要。

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GraphQL语句

语句含义：查询Nodes下面的fields的类型（ofType）以及描述，然后再获取子fields的所有fileds
比如：Nodes包含Products和productpushtime，该语句可以查询出Products，productpushtime的fields和描述

query NodeType{
  __type(name:"Nodes"){
    name
		description
      fields {
      	name
        description
      	type{
          name
          ofType{
            name
            description
            fields{
              name
              description
            }
          }
        }
    }     
  }
}

返回结果

{
  "data": {
    "__type": {
      "name": "Nodes",
      "description": "所有实体",
      "fields": [
        {
          "name": "products",
          "description": "产品列表",
          "type": {
            "name": null,
            "ofType": {
              "name": "ProductSerializer",
              "description": "产品",
              "fields": [
                {
                  "name": "id",
                  "description": "产品id"
                },
                {
                  "name": "uid",
                  "description": "产品uid"
                },
                {
                  "name": "create_time",
                  "description": "产品创建时间"
                },
                {
                  "name": "name",
                  "description": "产品名称"
                },
                {
                  "name": "total_deadline",
                  "description": "产品期限"
                },
                {
                  "name": "total_scale",
                  "description": "产品规模"
                },
                {
                  "name": "usage",
                  "description": "产品用途"
                }
              ]
            }
          }
        },
        {
          "name": "product_push_times",
          "description": "产品推送时间列表",
          "type": {
            "name": null,
            "ofType": {
              "name": "ProductPushTimeSerializer",
              "description": "产品推送时间",
              "fields": [
                {
                  "name": "id",
                  "description": "产品推送时间id"
                },
                {
                  "name": "uid",
                  "description": "产品推送时间uid"
                },
                {
                  "name": "create_time",
                  "description": "产品推送时间的创建时间"
                },
                {
                  "name": "name",
                  "description": "产品推送时间"
                },
                {
                  "name": "progress_str",
                  "description": "进度描述"
                },
                {
                  "name": "content",
                  "description": "产品推送时的描述"
                }
              ]
            }
          }
        }
      ]
    }
  }
}

语句2：返回最外层的node的fields

query typeQuery {
                __schema {
                    queryType {
                         fields { name type{ fields { name description } }  } 
                    }
                }
            }

result:

{
  "data": {
    "__schema": {
      "queryType": {
        "fields": [
          {
            "name": "nodes",
            "type": {
              "fields": [
                {
                  "name": "products",
                  "description": "产品列表"
                },
                {
                  "name": "product_push_times",
                  "description": "产品推送时间列表"
                }
              ]
            }
          }
        ]
      }
    }
  }
}