显示嵌套数组项响应本机

Question

我有一系列评论和他们的回复，如下所示：

[
{
commentId: "5efd85d5b2eff7063b8ec802",
description: "some comment description",
isAnonymous: false,
createdAt: "2020-07-02T06:59:33.317Z",
currentUserLiked: 0,
likes: 0,
user: {
firstName: "ar",
lastName: "ar",
email: "[e-mail]",
username: "sami",
isVerified: false,
},
children: [
{
commentId: "5efd86b7b2eff7063b8ec803",
parentId: "5efd85d5b2eff7063b8ec802",
description: "some comment description",
isAnonymous: false,
createdAt: "2020-07-02T07:03:19.405Z",
currentUserLiked: 0,
likes: 0,
user: {
firstName: "ar",
lastName: "ar",
email: "[e-mail]",
username: "sami",
isVerified: false,
},
children: [
{
commentId: "5efd89c4b2eff7063b8ec805",
parentId: "5efd86b7b2eff7063b8ec803",
description: "Child of Child",
isAnonymous: false,
createdAt: "2020-07-02T07:16:20.717Z",
currentUserLiked: 0,
likes: 0,
user: {
firstName: "ar",
lastName: "ar",
email: "[e-mail]",
username: "sami",
isVerified: false,
},
children: [],
},
],
},
{
commentId: "5efd8996b2eff7063b8ec804",
parentId: "5efd85d5b2eff7063b8ec802",
description: "Child of Child",
isAnonymous: false,
createdAt: "2020-07-02T07:15:34.341Z",
currentUserLiked: 0,
likes: 0,
user: {
firstName: "ar",
lastName: "ar",
email: "[e-mail]",
username: "sami",
isVerified: false,
},
children: [],
},
],
},
];

我想将它们显示为使用 flatList 在 react native 中处于同一级别的所有孩子。

我该怎么做？

Answer 1

我理解正确吗？

const comments = [{id: 1, children: [{id: 2, children: [{id: 3, children:[]}]}]}];
const flatComments = (list) => {
return list.flatMap(el => {
const {children, ...out} = el;
return [out, ...flatComments(children)];
});
};
flatComments(comments);
// [{id: 1}, {id: 2}, {id: 3}];