Try to update MongoDB document Getting Deprecation Warning as
(node:71307) [DEP0079] DeprecationWarning: Custom inspection function on Objects via .inspect() is deprecated
Node version v10.5.0, db version v3.6.5, Mongoose version mongoose@4.1.12
Campground.findById(campgroundId, function(err, campground){
if(err){
console.log(err);
} else {
console.log(campground.celebrity);
Celebrity.create(celebrityData, function(err, celebrity){
if(err){
console.log(err);
} else {
//save comment
celebrity.save();
campground.celebrity.push(celebrity);
campground.save();
console.log(celebrity);
//req.flash('success', 'Created a comment!');
}
});
}
});
You have to not worry about this error this is mongoose warning . Actually Mongoose use inspect() to debug output . they will update it may be before node 12.x . For now it is safe to use this.
Nothing to worry.
Check this info. https://nodejs.org/api/deprecations.html#deprecations_dep0079_custom_inspection_function_on_objects_via_inspect
DEP0079: Custom inspection function on Objects via .inspect()# Type: Runtime
Using a property named inspect on an object to specify a custom inspection function for util.inspect() is deprecated. Use util.inspect.custom instead. For backward compatibility with Node.js prior to version 6.4.0, both may be specified.
If you want more detail, see this . This is under progress. Warning will come in node 10
为了不收到弃用消息,您可以根据此Github mongoose 问题升级到 mongoose 版本 5.2.10 或更高版本,并在代码中的适当位置设置以下内容:
mongoose.set('useCreateIndex', true)
升级到 5.2.10 并设置
mongoose.set('useCreateIndex', true);
Another way to set it is...
mongoose.connect(
"mongodb://<user>:<password>@<url>",
{
useNewUrlParser: true,
useCreateIndex: true
}
)
More information can be found here: https://github.com/Automattic/mongoose/issues/6890
To solve this problem, You have to use useNewUrlParser and useCreateIndex. See the code below.
mongoose.connect(
config.databaseUrl,
{
useNewUrlParser: true,
useCreateIndex: true
}
)
Or
mongoose.set("useCreateIndex", true);
mongoose.connect(
config.databaseUrl,
{
useNewUrlParser: true
}
);
You should add the options useCreateIndex
to your connect method
mongoose.connect(keys.mongoURI, {
useNewUrlParser: true,
useCreateIndex: true,
})
Totally random but at least it's not a copycat answer: I was getting this deprecation warning (and unexpected behavior) when I accidentally used Model.find()
instead of Model.findOne()
So my erroneous code looked like this
User.find(query)
.then(user => {
console.log(user.emailSettings.confirmToken)
})
...with an ordinary object/array, this would fail with TypeError: Cannot read property 'confirmToken' of undefined
but with an mongo document array apparently it does this inspecty thing and now gives this deprecation warning.
I want to add to this thread that it may also have to do with other dependencies.
For instance, nothing I updated or set for NodeJS, MongoDB or Mongoose were the issue - however - my problem was that connect-mongodb-session
had been updated and starting slinging the same error. The solution, in this case, was to simply rollback the version of connect-mongodb-session
from version 2.3.0
to 2.2.0
.
mongoose.connect(process.env.CONNECTION_MONGO, {
useNewUrlParser: true,
useUnifiedTopology: true,
useCreateIndex: true,
useFindAndModify: false,
})
.then(() => {
console.log("Database connected...");
})
.catch((err) => console.error(err));
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