Lodash:根据条件在多级Json中查找并添加项目 [英] Lodash: Find and add an item in a multi-level Json based on a conditions

问题描述

我正在尝试根据条件将项目添加到角色数组".

I am trying to add an item to "roles array" based on a condition.

我的json:

[{
    "unitId": "2",
    name: "elizabeth",
    roles: [{
      "role": {
        "roleId": "2",
        roleName: "testing"
      }
    }, {
      "role": {
        "roleId": "5",
        roleName: "dev"
      }
    }]
  },
  {
    "unitId": "3",
    name: "peter",
    roles: [{
      "role": {
        "roleId": "1",
        roleName: "testing"
      }
    }, {
      "role": {
        "roleId": "2",
        roleName: "dev"
      }
    }]
  }
]

let newRole = { "role":{"roleId" : "6", roleName: "BA"}}

预期结果:将newRole添加到角色数组之后.

Expected result: After adding the newRole to the roles array.

[{
    "unitId": "2",
    name: "elizabeth",
    roles: [{
      "role": {
        "roleId": "2",
        roleName: "testing"
      }
    }, {
      "role": {
        "roleId": "5",
        roleName: "dev"
      }
    }, {
      "role": {
        "roleId": "6",
        roleName: "BA"
      }
    }]
  },
  {
    "unitId": "3",
    name: "peter",
    roles: [{
      "role": {
        "roleId": "1",
        roleName: "testing"
      }
    }, {
      "role": {
        "roleId": "2",
        roleName: "dev"
      }
    }]
  }
]

此处为unitId:2，我正在尝试向角色数组"中添加一个newRole.我尝试了lodash的过滤器和推送功能，但没有用.

Here for unitId: 2, I am trying to add a newRole to the "roles array". I tried lodash's filter and push, but it didn't work.

推荐答案

如果我理解正确，则您正在尝试基于"unitId"添加新角色.希望这会有所帮助.

If I understand correctly, you are trying to add a new role based on the "unitId". Hope this helps.

const a = [{
    "unitId": "2",
    name: "elizabeth",
    roles: [{"role": {"roleId": "2", roleName: "testing"}}, {"role": {"roleId": "5", roleName: "dev"}}]
}, {
    "unitId": "3",
    name: "peter",
    roles: [{"role": {"roleId": "1", roleName: "testing"}}, {"role": {"roleId": "2", roleName: "dev"}}]
}];

const newRole = { "role":{"roleId" : "6", roleName: "BA"}};

const insert = (arr, id, newRole) => {

    const whereToPush = arr.find((item) => item.unitId === id);

    if (whereToPush) whereToPush.roles.push(newRole);
};

insert(a, '2', newRole);

console.log(a);

这篇关于Lodash:根据条件在多级Json中查找并添加项目的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！