'document' parameter is a function in post save middleware #13026
Description
Prerequisites
- I have written a descriptive issue title
- I have searched existing issues to ensure the bug has not already been reported
Mongoose version
6.9.1
Node.js version
19.5.0
MongoDB server version
6.0.4
Typescript version (if applicable)
No response
Description
Hi. When bulkSave() is called, it fires post save middleware, but for some reason, the doc parameter is a function, but typings indicate it should be a document. Using this works tho.
Apart from that, what is the proper way to get a document? Docs list these 2 ways, but I couldn't find the difference between them in the docs.
Steps to Reproduce
import mongoose from "mongoose";
mongoose.set("debug", true);
await mongoose.connect("mongodb://127.0.0.1:27017/mongooseissue");
const schema = new mongoose.Schema({ foo: Boolean, bar: Boolean });
schema.post("save", function (doc) {
// 'doc' is typed as:
// mongoose.Document<unknown, any, { foo?: boolean | undefined; bar?: boolean | undefined; }> & { foo?: boolean | undefined; bar?: boolean | undefined; } & { _id: mongoose.Types.ObjectId; }
console.log("this:");
console.log(this);
console.log("doc:");
console.log(doc);
})
const TestModel = mongoose.model("test", schema);
async function one() {
const doc = new TestModel({ foo: true, bar: true });
await doc.save();
// 'this' and 'doc' are printed in post middleware, they're equal
}
async function two() {
const docs = await TestModel.find({}).exec();
docs.forEach(doc => {
doc.foo = false;
})
await TestModel.bulkSave(docs);
// 'this' is a document
// 'doc' parameter is a function, why?
}
console.log("One");
await one();
console.log("Two");
await two();Expected Behavior
The doc parameter is a document