One challenge I'm facing with my social media app is that I have two separate collections - one for users and the other for user posts. When I update information in a user's collection, it should also reflect in the corresponding posts (as the post collection contains user data), but currently, this only applies to new posts created after the update, not older ones. How can I resolve this issue?
USER SCHEMA
const userSchema = new Schema({
name: { type: String, required: true },
lastname: { type: String, required: true },
username: { type: String, required: true },
email: { type: String, required: true },
password: { type: String, required: true, minlength: 8 },
avatar: { data: Buffer, contentType: String },
});
POST SCHEMA
const postSchema = new Schema({
user: { type: mongoose.Schema.Types.ObjectId, ref: "User" },
name: { type: String, required: true },
lastname: { type: String },
username: { type: String },
avatar: { data: Buffer, contentType: String },
date: { type: Date, default: Date.now() },
textOfThePost: { type: String, required: true },
});
EDIT FUNCTION EXPRESS/MONGOOSE
router.put("/edit_profile", async (req, res) => {
try {
const { name, lastname, username } = req.body;
const user = await User.findById(req.user).select("-password");
if (!user) return res.status(404).json("User doesn't exists");
if (name) user.name = name;
if (lastname) user.lastname = lastname;
if (username) user.username = username;
await user.save();
res.json(user);
} catch (err) {
res.status(500).json({ error: err.message });
}
};