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JavaScript

Posted by scott twitchell
scott twitchell
4,915 Points

hello, i keep getting this message in my terminal. "DeprecationWarning"

i was fallowing along in the full stack java script course and i got stuck on this. i get this in the terminal "DerpecationWarning: 'open()' is deprecated in mongoose >= 4.11.0, use 'openUri()' instead, or set the "useMongoClien option if using "connect()" or 'createConnection()' ". i cant post my data from my sign up script. Im lost please help.

Johannes Scribante
Johannes Scribante
19,175 Points
Johannes Scribante
Johannes Scribante
19,175 Points

Hi Scott,

I had the exact same issue a little while back. Basically as libraries are updated old code is 'written-off' or 'no longer supported' meaning that the new functions and internal working of the libraries no longer use those deprecated items.

If you look at the version number or Mongo used in the video, you'll notice a large version difference.

Basically the new version does not automatically include promises, therefore you have to define the promises.
mongoose.Promise = global.Promise; // define global promises
mongoose.connect('mongodb://localhost:27017/insert_your_name_here', { useMongoClient: true }); // define to use mongo as the client
let db = mongoose.connection;

This is how I understand it, if someone else can clarify the exact use of global.Promise or useMongoClient: true that would be AWESOME!!