javascript - Type Error in .then function using Vue.js

Question

I have a get request that detects if user is Admin or not. My problem is that I want to display a button using v-if to check if it's true or false. By default the value is set to false.

Data

Then we got the button :

And the .then in beforeCreate :

Answer 1

You need to use an arrow function to preserve the this context:

.then((responses) => {

Otherwise the callback function injects its own this