javascript - Nuxt auth getToken witnin async is undefined - Stack Overflow

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I am trying to fetch some data from user and I need to pass bearer token within call.

async asyncData () {
    let response = await axios.get('dataURL', {}, { headers: {"Authorization" : `Bearer ${this.$auth.getToken('local')}`} })
  },

But this doesn't work, it always says that $auth is undefined, while within template I can easily output any $auth property...

How can I get bearer token within async?

I am trying to fetch some data from user and I need to pass bearer token within call.

async asyncData () {
    let response = await axios.get('dataURL', {}, { headers: {"Authorization" : `Bearer ${this.$auth.getToken('local')}`} })
  },

But this doesn't work, it always says that $auth is undefined, while within template I can easily output any $auth property...

How can I get bearer token within async?

• javascript
• vue.js
• nuxt.js

Share Improve this question Follow asked Jul 6, 2019 at 14:38 LearnerLearner 77333 gold badges1313 silver badges3838 bronze badges 3

• Make sure this is what you think it is. – Titus Commented Jul 6, 2019 at 14:40
• @Titus Okay this is not usable within async. How can I get a cookie that is set from nuxt/auth module? – Learner Commented Jul 6, 2019 at 15:17
• You can use this in an async function. You can set the function's context (what this refers to inside the function) using bind or call or apply. Here is an example: someObject.asyncData.call(objectWith$authProp) – Titus Commented Jul 6, 2019 at 15:42

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3 Answers 3

Sorted by: Reset to default 4

@Titus is right that "this" is the issue. You don't have "this" available in asyncData because:

You do NOT have access of the ponent instance through this inside asyncData because it is called before initiating the ponent.

You do have access to "context" however so you can call the auth module using that:

async asyncData (context) {
    let response = await axios.get('dataURL', {}, { headers: {"Authorization" : `Bearer ${context.app.$auth.getToken('local')}`} })
  },

nuxtjs/Auth docs

However you are still not using asyncData as it should be because you're not returning anything that can be merged with data so you might want to try like this:

async asyncData (context) {
    let { response } = await axios.get('dataURL', {}, { headers: {"Authorization" : `Bearer ${context.app.$auth.getToken('local')}`} })
    return { token: response }
  },

Having said that, I don't really understand why you want to get your token in a ponent. Surely you are better off getting it globally through nuxtServerInit in your store.

Maybe you can try to pass the context (this) , after your call?
E.g:

await axios.get('dataURL', {}, { headers: {"Authorization" : `Bearer ${this.$auth.getToken('local')}`} }),this;

You can use something like that:

async asyncData (app) {
    let response = await axios.get('dataURL', {}, { headers: {"Authorization" : `Bearer ${app.$auth.getToken('local')}`} });
},

Here is the documentation, you can learn more about it.

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