我正在尝试使用相同的ID将两个多级对象合并到一个数组中。请帮忙。
对象的输入数组如下
{
"data": [
{
"id": 1,
"movieId": 1,
"user": "test@test.com",
"title": "test Project",
"desc": "test 123 test 123test 123test 123test 123",
"status": "Yes",
"movies":[{
"id": 1,
"title": "Movie 1",
"desc": "Movie 1 Movie 1 Movie 1 Movie 1",
"status": "Yes",
"images":[{
"id": 1,
"fileType": "image",
"fileName": "movie1.0.jpg",
"filePath": "images\\movie1.0.jpg",
"fileExten": ".jpg"
},
{
"id": 2,
"fileType": "image",
"fileName": "movie1.1.jpg",
"filePath": "images\\movie1.1.jpg",
"fileExten": ".jpg"
}],
"videos":[{
"id": 4,
"fileType": "video",
"fileName": "movie1.0.mp4",
"filePath": "videos\\movie1.0.mp4",
"fileExten": ".mp4"
},
{
"id": 5,
"fileType": "video",
"fileName": "movie1.1.mp4",
"filePath": "videos\\movie1.1.mp4",
"fileExten": ".mp4"
}]
}]
},
{
"id": 1,
"movieId": 3,
"user": "test@test.com",
"title": "test Project",
"desc": "test 123 test 123test 123test 123test 123",
"status": "Yes",
"movies":[{
"id": 3,
"title": "Movie 3",
"desc": "Movie 3 Movie 3 Movie 3 Movie 3",
"status": "Yes",
"images":[{
"id": 8,
"fileType": "image",
"fileName": "movie2.0.jpg",
"filePath": "images\\movie2.0.jpg",
"fileExten": ".jpg"
}],
"videos":[{
"id": 12,
"fileType": "video",
"fileName": "movie2.1.mp4",
"filePath": "videos\\movie2.1.mp4",
"fileExten": ".mp4"
},
{
"id": 16,
"fileType": "video",
"fileName": "movie2.2.mp4",
"filePath": "videos\\movie2.2.mp4",
"fileExten": ".mp4"
},
{
"id": 20,
"fileType": "video",
"fileName": "movie2.3.mp4",
"filePath": "videos\\movie2.3.mp4",
"fileExten": ".mp4"
}]
}]
},{
"id": 2,
"user": "test@test.com",
"title": "Test Project 2",
"desc": "project2 123 project2 123 project2 123 project2 123 project2 123 ",
"status": "Yes",
"movies":[]
}
]
}
上面的输出是由下面的代码产生的。
我需要合并两个具有相同ID的对象，以便内部电影数组也可以追加/合并。我已经尝试了许多方法，但是我无法获得期望的输出。请帮忙。
let groupList = [];
await Promise.all(
await getGroups(user).map(async group => {
group.movies = [await getMovies(group.movieId)];
groupList.push(group);
return groupList;
}));
我自己找到了解决方法
解决方案：
-------------
下面的代码返回预期的确切期望输出。
await Promise.all(
await getGroups(user).map(async (item, key) => {
item.movies = [];
groupList[key] = item;
let movies = (item.movies_list) ? item.movies_list.split(','): []; // it's looks like "1,2" string so converting it to array
await Promise.all(
movies.map( async (id, index) => {
groupList[key].movies.push(await getMovies(id));
return groupList;
})
)
})
);
console.log(groupList);
期望输出：
{
"data": [
{
"id": 1,
"user": "test@test.com",
"title": "test Project",
"desc": "test 123 test 123test 123test 123test 123",
"status": "Yes",
"movies":[{
"id": 1,
"title": "Movie 1",
"desc": "Movie 1 Movie 1 Movie 1 Movie 1",
"status": "Yes",
"images":[{
"id": 1,
"fileType": "image",
"fileName": "movie1.0.jpg",
"filePath": "images\\movie1.0.jpg",
"fileExten": ".jpg"
},
{
"id": 2,
"fileType": "image",
"fileName": "movie1.1.jpg",
"filePath": "images\\movie1.1.jpg",
"fileExten": ".jpg"
}],
"videos":[{
"id": 4,
"fileType": "video",
"fileName": "movie1.0.mp4",
"filePath": "videos\\movie1.0.mp4",
"fileExten": ".mp4"
},
{
"id": 5,
"fileType": "video",
"fileName": "movie1.1.mp4",
"filePath": "videos\\movie1.1.mp4",
"fileExten": ".mp4"
}]
},{
"id": 3,
"title": "Movie 3",
"desc": "Movie 3 Movie 3 Movie 3 Movie 3",
"status": "Yes",
"images":[{
"id": 8,
"fileType": "image",
"fileName": "movie2.0.jpg",
"filePath": "images\\movie2.0.jpg",
"fileExten": ".jpg"
}],
"videos":[{
"id": 12,
"fileType": "video",
"fileName": "movie2.1.mp4",
"filePath": "videos\\movie2.1.mp4",
"fileExten": ".mp4"
},
{
"id": 16,
"fileType": "video",
"fileName": "movie2.2.mp4",
"filePath": "videos\\movie2.2.mp4",
"fileExten": ".mp4"
},
{
"id": 20,
"fileType": "video",
"fileName": "movie2.3.mp4",
"filePath": "videos\\movie2.3.mp4",
"fileExten": ".mp4"
}]
}]
},
{
"id": 2,
"user": "test@test.com",
"title": "Test Project 2",
"desc": "project2 123 project2 123 project2 123 project2 123 project2 123 ",
"status": "Yes",
"movies":[]
}
]
}
答案 0 :(得分：1)
使用Map
var moviesData = { "data": [ { "id": 1, "movieId": 1, "user": "test@test.com", "title": "test Project", "desc": "test 123 test 123test 123test 123test 123", "status": "Yes", "movies":[{ "id": 1, "title": "Movie 1", "desc": "Movie 1 Movie 1 Movie 1 Movie 1", "status": "Yes", "images":[{ "id": 1, "fileType": "image", "fileName": "movie1.0.jpg", "filePath": "images\\movie1.0.jpg", "fileExten": ".jpg" }, { "id": 2, "fileType": "image", "fileName": "movie1.1.jpg", "filePath": "images\\movie1.1.jpg", "fileExten": ".jpg" }], "videos":[{ "id": 4, "fileType": "video", "fileName": "movie1.0.mp4", "filePath": "videos\\movie1.0.mp4", "fileExten": ".mp4" }, { "id": 5, "fileType": "video", "fileName": "movie1.1.mp4", "filePath": "videos\\movie1.1.mp4", "fileExten": ".mp4" }] }] }, { "id": 1, "movieId": 3, "user": "test@test.com", "title": "test Project", "desc": "test 123 test 123test 123test 123test 123", "status": "Yes", "movies":[{ "id": 3, "title": "Movie 3", "desc": "Movie 3 Movie 3 Movie 3 Movie 3", "status": "Yes", "images":[{ "id": 8, "fileType": "image", "fileName": "movie2.0.jpg", "filePath": "images\\movie2.0.jpg", "fileExten": ".jpg" }], "videos":[{ "id": 12, "fileType": "video", "fileName": "movie2.1.mp4", "filePath": "videos\\movie2.1.mp4", "fileExten": ".mp4" }, { "id": 16, "fileType": "video", "fileName": "movie2.2.mp4", "filePath": "videos\\movie2.2.mp4", "fileExten": ".mp4" }, { "id": 20, "fileType": "video", "fileName": "movie2.3.mp4", "filePath": "videos\\movie2.3.mp4", "fileExten": ".mp4" }] }] },{ "id": 2, "user": "test@test.com", "title": "Test Project 2", "desc": "project2 123 project2 123 project2 123 project2 123 project2 123 ", "status": "Yes", "movies":[] } ] }
let makeMap = new Map();
moviesData.data.forEach((o) => {
if (makeMap.has(o.id)) {
let oldmov = makeMap.get(o.id).movies;
o.movies = [...oldmov, ...o.movies];
makeMap.set(o.id, o);
} else makeMap.set(o.id, o);
});
//console.log(makeMap.entries());
console.log([...makeMap]);