Vuex - passing multiple parameters to mutation

Question

I am trying to authenticate a user using vuejs and laravel's passport.

I am not able to figure out how to send multiple parameters to the vuex mutation via an action.

- store -

export default new Vuex.Store({
  state: {
    isAuth: !!localStorage.getItem('token')
  },
  getters: {
    isLoggedIn(state) {
      return state.isAuth
    }
  },
  mutations: {
    authenticate(token, expiration) {
      localStorage.setItem('token', token)
      localStorage.setItem('expiration', expiration)
    }
  },
  actions: {
    authenticate: ({
      commit
    }, token, expiration) => commit('authenticate', token, expiration)
  }
})

- login method -

login() {
  var data = {
    client_id: 2,
    client_secret: '**************************',
    grant_type: 'password',
    username: this.email,
    password: this.password
  }
  // send data
  this.$http.post('oauth/token', data)
    .then(response => {
      // send the parameters to the action
      this.$store.dispatch({
        type: 'authenticate',
        token: response.body.access_token,
        expiration: response.body.expires_in + Date.now()
      })
    })
}

I would be very thankful for any kind of help!

Answer 1

Mutations expect two arguments: state and payload, where the current state of the store is passed by Vuex itself as the first argument and the second argument holds any parameters you need to pass.

The easiest way to pass a number of parameters is to destruct them:

mutations: {
    authenticate(state, { token, expiration }) {
        localStorage.setItem('token', token);
        localStorage.setItem('expiration', expiration);
    }
}

Then later on in your actions you can simply

store.commit('authenticate', {
    token,
    expiration,
});