通过对象 ID 更新数组对象的 jsonpatch 路径

Question

我正在尝试找出修补一组对象的最佳方法。我正在尝试更改多个对象的排序顺序，并认为 jsonpatch 可能是正确的方法。我的对象看起来像：

[
  {
    "ID": "100",
    "FirstName": "John",
    "LastName": "Smith",
    "Email": "jsmith@test.com",
    "SortOrder": 1
  },
  {

    "ID": "125",
    "FirstName": "John",
    "LastName": "Doe",
    "Email": "jdoe@test.com",
    "SortOrder": 3
  },
  {

    "ID": "50",
    "FirstName": "james",
    "LastName": "johnson",
    "Email": "jjohnson@test.com",
    "SortOrder": 2
  },
]

我创建了一个端点，允许补丁请求使用 jsonpatch 请求更新集合中的多个对象，如下所示：

[
  {
    "op": "replace",
    "path": "/1/SortOrder",
    "value": 2
  },
  {
    "op": "replace",
    "path": "/0/SortOrder",
    "value": 1
  },
  {
    "op": "replace",
    "path": "/2/SortOrder",
    "value": 3
  }
]

我想要做的是在 jsonpatch 路径中使用 ID 属性。我当前的对象结构可能吗？它看起来像：

[
  {
    "op": "replace",
    "path": "/125/SortOrder",
    "value": 2
  },
  {
    "op": "replace",
    "path": "/100/SortOrder",
    "value": 1
  },
  {
    "op": "replace",
    "path": "/50/SortOrder",
    "value": 3
  }
]

我需要做什么才能提出这样的补丁请求？

Answer 1

基于 Json pointer RFC, there is no way to select an element from an array by some property. Since JSON Patch 使用 JSON 指针，你运气不好。

遗憾的是 JSON 补丁人员没有 select JSON Path 或类似的 selection 语言。

Answer 2

试试这个功能：

export function generateJsonPatch(obj: Object, patchObject = [], parent: string = null): Object[] {
  for (const key in obj) {
    if (obj.hasOwnProperty(key)) {
      if (obj[key] instanceof Object) {
        if (parent) {
          parent = parent + '/' + key;
        } else {
          parent = key;
        }
        generateJsonPatch(obj[key], patchObject, parent);
      } else if (obj[key]) {
        let fieldName;
        if (parent) {
          fieldName = parent + '/' + key;
        } else {
          fieldName = key;
        }
        const patchField = { op: 'replace', path: `/${fieldName}`, value: `${obj[key]}` };
        patchObject.push(patchField);
      }
    }
  }
  return patchObject;
}

// USAGE:
const test = {
  'a': '1',
  'b': '2',
  'c': [{
    'd': '4',
    'e': '5'
  }]
};

generateJsonPatch(test);
// it will generate
// [{ "op": "replace", "path": "/a", "value": "1" },
//  { "op": "replace", "path": "/b", "value": "2" },
//  { "op": "replace", "path": "/c/0/d", "value": "4" },
//  { "op": "replace", "path": "/c/1/e", "value": "5" }]

通过对象 ID 更新数组对象的 jsonpatch 路径

jsonpatch path to update array object by object ID

c#

json

asp.net-web-api

json-patch