this is undefined (this.$http.get) in vuex 2.0 actions

I try to migrate my vue 1.0 to 2.0 and it is really hard…many undocumented changes 😦

So, here is another:

This is my actions.js file

import Vue from 'vue';
import Resource from 'vue-resource';

Vue.use(Resource);

export fetchData({commit}, filter) {
  // bla bla
  this.$http.get(...)
};

I tried Vue.$http.get or Vue.root.$http.get but nothing works…

// Edit: Ok Vue.http.get works, but why does this.$http.get not more works?

[liuhedong]

import Vue from ‘vue’; … Vue.http.get(…)…

is work!!!

[steffans]

See http://jsfiddle.net/rrd7k8hp/1/