Avoid mutating a prop directly since the value will be overwritten

Question

I have very common problem with upgrading to Vue 2.0

I am getting warning:

Avoid mutating a prop directly since the value will be overwritte

Answer 1

if you want to mutate props - use object.

component:

    props: ['user'],
    methods: {
      setUser: function() {
        this.user.username= "User";
        this.user.password= "myPass123";
      }
    }