title: Why does mongoose model's hasOwnProperty return false when property does exist?
body: <p>I have this code : </p>
  
  <pre><code>user.findOne( { 'email' : email }, function( err, User )
              {
                  if ( err )
                  {
                      return done(err);
                  }
                  if ( !User )
                  {
                      return done(null, false, { error : "User not found"});
                  }
                  if ( !User.hasOwnProperty('local') || !User.local.hasOwnProperty('password') )
                  {
                      console.log("here: " + User.hasOwnProperty('local')); // displays here: false
                  }
                  if ( !User.validPass(password) )
                  {
                      return done(null, false, { error : "Incorrect Password"});
                  }
                  return done(null, User);
              });
  </code></pre>
  
  <p>Since the app supports other kinds of authentication, I have a user model that has nested object called local which looks like </p>
  
  <pre><code>local : { password : "USERS_PASSWORD" }
  </code></pre>
  
  <p>So during login I want to check whether the user has provided a password but I encountered this interesting problem. 
  My test object looks like this: </p>
  
  <pre><code>{ _id: 5569ac206afebed8d2d9e11e,
  email: 'test@example.com',
  phno: '1234567890',
  gender: 'female',
  dob: Wed May 20 2015 05:30:00 GMT+0530 (IST),
  name: 'Test Account',
  __v: 0,
  local: { password: '$2a$07$gytktl7BsmhM8mkuh6JVc3Bs/my7Jz9D0KBcDuKh01S' } } 
  </code></pre>
  
  <p>but <code>console.log("here: " + User.hasOwnProperty('local'));</code> prints <code>here: false</code></p>
  
  <p>Where did I go wrong?</p>