title: Pull in mongoose doesn't wanna work. Any suggestions?
body: <p>Here's my object:</p>
  <pre><code>{
    posts: [
      {
        _id: 603dd892548e9b30201cb254,
        title: '222222222',
        content: '222222222',
        __v: 0
      },
      {
        _id: 603df0a5996e422c6cbd05d6,
        title: 'ANdrew',
        content: 'testestetsetste',
        __v: 0
      },
      {
        _id: 603df53790787539a8c92472,
        title: 'vvvvvvvvvvvvvvvvvvv',
        content: 'vvvvvvvvvvvvvvvvvvvvvvvvvv',
        __v: 0
      },
      {
        _id: 603e2abfa384381c28529c76,
        title: 'qqqqqqqqqqqqqq',
        content: 'qqqqqqqqqqqqqqqqqq',
        __v: 0
      },
      {
        _id: 603e2b36550cd6289caa880b,
        title: '333',
        content: '333',
        __v: 0
      }
    ],
    _id: 603dd326b8c54d1ac0afea0f,
    username: 'andrew',
    mail: 'mail@gmail.com',
    __v: 5
  }
  </code></pre>
  <p>From array &quot;posts&quot; I wanna delete any item I want, so I did:</p>
  <pre><code>User.findByIdAndUpdate(req.user.id, {$pull: {posts: { _id: postID}}},  function(err, obj) {
  if(!err){
    res.redirect(&quot;/&quot;)
  }  });
  </code></pre>
  <p>Page refreshes, but every note is still there. What's going on? i tried updateOne too, and object.notes.pull({_id: postID}). All without errors as well as without deletions.</p>