我想实现像plunker这样的在线编辑器。我已经定义了以下数据结构:post
(即项目)包含folders
列表(表示帖子的不同版本),而folder
只是一个列表files
。
var PostSchema = new mongoose.Schema({
folders: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Folder' }]
...
});
var FolderSchema = new mongoose.Schema({
files: [{ name: String, body: String, editorOption: Object }],
post: { type: mongoose.Schema.Types.ObjectId, ref: 'Post' }
})
我想使用以下请求添加文件夹/版本(通过编辑器上的save
按钮)。请注意,由于帖子可以同时在不同的地方打开,我们必须在向其添加版本之前从数据库中获取帖子,然后我们返回最新的帖子到控制器。
o.addFolder = function (id, folder) {
return $http.post('/posts/' + id + '/editor/folders', folder, {
headers: { Authorization: 'Bearer ' + auth.getToken() }
})
}
router.post('/posts/:post/editor/folders', auth, function (req, res, next) {
req.post.populate('folders', function (err, post) {
if (err) return next(err);
var folder = new Folder(req.body);
folder.post = post;
folder.save(function (err, folder) {
if (err) return next(err);
console.log("3 folder: "); console.log(folder);
console.log("4 post: "); console.log(post);
post.folders.push(folder);
console.log("5 folder: "); console.log(folder);
console.log("6 post: "); console.log(post);
post.save(function (err, post) {
if (err) return next(err);
res.json({ folder: folder, post: post })
})
})
})
});
这是一个测试日志,它尝试将2个文件的文件夹添加到空帖子中:
3 folder:
{ __v: 0,
post:
{ _id: 58b5e86d8e328f58f3e87ac2,
__v: 0,
folders: [] },
_id: 58b5e86d8e328f58f3e87ac3,
files:
[ { name: 'index.html',
body: '<!DOCTYPE html>\n<body>\nindex.html\n</body>\n</html>',
editorOption: [Object],
_id: 58b5e86d8e328f58f3e87ac5 },
{ name: 'script.js',
body: '',
editorOption: [Object],
_id: 58b5e86d8e328f58f3e87ac4 } ] }
4 post:
{ _id: 58b5e86d8e328f58f3e87ac2,
__v: 0,
folders: [] }
5 folder:
events.js:85
throw er; // Unhandled 'error' event
^
RangeError: Maximum call stack size exceeded
有谁知道那里有什么问题?
答案 0 :(得分:1)
以下代码完成了我想要的。显然,req.post.folders.push(folder)
可以将folder
推送到最新 post
。我们最终会populate
。
router.post('/posts/:post/editor/folders', auth, function (req, res, next) {
var folder = new Folder(req.body);
folder.post = req.post;
folder.save(function (err, folder) {
if (err) return next(err);
req.post.folders.push(folder);
req.post.save(function (err, post) {
if (err) return next(err);
req.post.populate('folders', function (err, post) {
if (err) return next(err);
res.json(post);
})
})
})
});