I am currently working on a Django/Vue.js application.
Upon submitting the login form, the Django view redirects to the user's username page, where the Vue.Js file retrieves data from the server. Below is the code snippet:
async created(){
await this.getUpdates();
}
The getUpdates() function, which sends the necessary date to Django for calculations, is outlined below.
async getUpdates(){
await fetch(baseurl + 'getupdates',
{
method: 'post',
headers: {
'Content-Type': 'application/json',
'X-Requested-With': 'XMLHttpRequest',
'X-CSRFToken': await this.getCsrfToken()
},
body: JSON.stringify(this.date)
}
);
var response = await this.loadUpdates();
this.updates = await response.json()
},
async loadUpdates(){
await this.getUser();
var response = await fetch(baseurl + 'loadupdates',
{
method: 'post',
headers: {
'Content-Type': 'application/json',
'X-Requested-With': 'XMLHttpRequest',
'X-CSRFToken': await this.getCsrfToken()
},
body: JSON.stringify(this.date)
}
);
this.updates = await response.json()
}
Below is the HTML snippet that displays these updates:
<!--Notices-->
<h3>Notices:</h3>
<div class="container" >
<div class="row" v-if="updates[0].length">
<div v-for="notice, index in updates[0]" class="col-md-3 col-6 my-1">
<!--Card section-->
<div class="card">
<div class="card-body">
<h4 class="card-title">[[notice.title]]</h4>
<p><a v-bind:href="'notices/'+ notice.id" tabindex=0>View Details</a></p>
<button class="btn btn-primary" @click="hide(notice)" tabindex=0>Hide</button>
</div>
</div>
</div>
</div>
<div class="row" v-else>
No new notices today
</div>
</div>
<br>
Upon logging into the page for the first time, the console log displays:
TypeError: updates[0] is undefined
I suspect the reason behind this issue lies in the asynchronous nature of the this.getUpdates() call, causing the HTML to render before waiting for a response and resulting in an empty updates[0] during the initial evaluation.
Is there a solution to address this problem? Thank you.