[英]Mongoose - Get and Delete a subrecord
I have a model defined as so:我有一个 model 定义如下:
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const feedbackSchema = new Schema({
Name: {
type: String,
required: true,
},
Email: {
type: String,
required: true,
},
Project: {
type: String,
required: true,
},
Wonder: {
type: String,
required: true,
},
Share: {
type: String,
required: true,
},
Delight: {
type: String,
required: true,
},
Suggestions: {
type: String,
required: true,
},
Rating: {
type: String,
required: true,
},
dateCreated: {
type: Date,
default: Date.now(),
},
user: {
type: Schema.Types.ObjectId,
ref: 'User'
}
});
const UserSchema = new Schema({
googleId: {
type: String
},
displayName: {
type: String
},
firstName: {
type: String
},
lastName: {
type: String
},
image: {
type: String
},
createdAt: {
type: Date,
default: Date.now(),
},
feedback: [feedbackSchema],
})
module.exports = mongoose.model("User", UserSchema);
An example document:示例文档:
{
_id: ObjectId('60b9dc728a516a4669b40dbc'),
createdAt: ISODate('2021-06-04T07:42:01.992Z'),
googleId: '2342987239823908423492837',
displayName: 'User Name',
firstName: 'User',
lastName: 'Name',
image: 'https://lh3.googleusercontent.com/a-/89wf323wefiuhh3f9hwerfiu23f29h34f',
feedback: [
{
dateCreated: ISODate('2021-06-04T07:42:01.988Z'),
_id: ObjectId('60b9dc858a516a4669b40dbd'),
Name: 'Joe Bloggs',
Email: 'joe@bloggs.com',
Project: 'Some Project',
Suggestions: 'Here are some suggestions',
Rating: '10'
},
{
dateCreated: ISODate('2021-06-04T08:06:44.625Z'),
_id: ObjectId('60b9df29641ab05db7aa2264'),
Name: 'Mr Bungle',
Email: 'mr@bungle',
Project: 'The Bungle Project',
Suggestions: 'Wharghable',
Rating: '8'
},
{
dateCreated: ISODate('2021-06-04T08:08:30.958Z'),
_id: ObjectId('60b9df917e85eb6066049eed'),
Name: 'Mike Patton',
Email: 'mike@patton.com',
Project: 'No More Faith',
Suggestions: 'Find the faith',
Rating: '10'
},
],
__v: 0
}
I have two routes defined, the first one is called when the user clicked a button on a feedback item on the UI which takes the user to a "are you sure you want to delete this record"-type page displaying some of the information from the selected feedback record.我定义了两条路由,当用户单击 UI 上的反馈项上的按钮时调用第一个路由,该按钮将用户带到“您确定要删除此记录”类型的页面,其中显示一些信息选择的反馈记录。
A second route which, when the user clicks 'confirm' the subrecord is deleted from the document.第二条路线,当用户单击“确认”时,子记录将从文档中删除。
The problem I'm having is I can't seem to pull the feedback from the user in order to select the document by id, here's what I have so far for the confirmation route:我遇到的问题是我似乎无法从用户那里获取反馈,以便通过 id 获取 select 文档,这是我迄今为止的确认路线:
router.get('/delete', ensureAuth, async (req, res) => {
try {
var url = require('url');
var url_parts = url.parse(req.url, true);
var feedbackId = url_parts.query.id;
const allFeedback = await User.feedback;
const feedbackToDelete = await allFeedback.find({ _id: feedbackId });
console.log(feedbackToDelete);
res.render('delete', {
imgSrc: user.image,
displayName: user.firstName,
feedbackToDelete
});
} catch (error) {
console.log(error);
}
})
Help much appreciated非常感谢帮助
You should be able to do just this:你应该能够做到这一点:
const feedbackToDelete = await User.feedback.find({ _id: feedbackId });
Or if feedbackId
is just a string, which is appears to be, you may have to do something like:或者,如果
feedbackId
只是一个字符串,看起来是,您可能必须执行以下操作:
// Create an actual _id object
// That is why in your sample doc you see ObjectId('foobarbaz')
const feedbackId = new mongoose.Types.ObjectId(url_parts.query.id);
const feedbackToDelete = await User.feedback.find({ _id: feedbackId });
Shouldn't this:这不应该:
const allFeedback = await User.feedback;
(a field) (一个领域)
be this:是这样的:
const allFeedback = await User.feedback();
(a method/function) (一种方法/功能)
? ?
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