Frist I have read and try the solution in the post of mongoose-and-partial-select-update. However when I try to use the traditional style, query would work.
My schema:
var userSchema = mongoose.Schema({
local: {
email: {
type: String,
index: {
unique: true,
dropDups: true
}
},
password: String,
displayName: String,
avatar: {
type: String,
default: "./img/user.png"
},
role: {
type: String,
default: "student"
},
ask_history: [
{
question_id: {
type: mongoose.Schema.Types.ObjectId,
ref: 'questionAnswer'
},
favorite: Boolean,
ask_time: Date
}
],
interest: [String]
}
})
Working Update function:
User.findById(id, function(err, User) {
if (err) {
throw done(err);
}
if (!User) {
return;
}
User.local.role = "admin";
User.save(function(err, updatedUser) {
if (err) {
throw err
} else {
//good
}
})
});
However if I do this:
User.update({_id : id},
{$set{
local:{role:"admin"}
}
},function(...){...}
});
Code above will overwrite user into:
{
_id : "...",
local: {
role : "admin"
}
}
I read that $ will make the update only changing property, where I did wrong?
The positional operator $ works with array of subdocuments.
In your case you have a single sub-document, so the following should work:
User.update({_id : id},
{ $set
{
"local.role": "admin"
}
}, function(...){...}
});