Push not updating array in DOM Vue - vue.js

Question

I am using Vue and am trying to make live search. But on updating the content of search, it doesn't get updated.
Data do get update in array, when checked in dev tools. But DOM don't get updated.
template
<div class="dropdown">
<input type="text" v-model="input" placeholder="Search" #keyup="searching" data-toggle="dropdown">
<span class="caret"></span>
<ul class="dropdown-menu">
<li v-for="(data,index) in availSearchData" :key="index">
{{data.name}}
</li>
</ul>
</div>
method
searching() {
if (this.input) {
let url = this.domain + "search";
axios
.get(url, {
params: {
table: this.table,
data: this.input
}
})
.then(res => {
this.availSearchData = [];
res.data.forEach(doc => {
this.availSearchData.push(doc);
});
});
}
}
I don't know where I am doing wrong.
Please help out if possible.

Answer 1

To add an item to the back of an array and get it to be reactive in Vue, below is what worked for me:
this.$set(this.items,
this.items.length,
JSON.parse(JSON.stringify(this.item))
);
The this.$set is Vue's inbuilt array manipulation function that guarantees reactivity.
The this.items is the array, this.items.length (NOTE: it is items.length NOT items.length - 1) is to push a new index to the back of the array and finally, JSON.parse(JSON.stringify(this.item)) is to clone the this.item into a new object before pushing into the array. The cloning part may not be applicable to you and I used this in variables because all the variables are declared in my data() function.

Answer 2

Use a computed property in your component and use that for parsing the template like this
<li v-for="(data,index) in availSearch" :key="index">
{{data.name}}
</li>
and computed property will be then
availSearch() {
return this.availSearchData;
},
so this computed property always return the array if it is updated.
Also if your response is the array that you want to use exactly, try this
searching() {
if (this.input) {
let url = this.domain + "search";
axios
.get(url, {
params: {
table: this.table,
data: this.input
}
})
.then(res => {
this.availSearchData = [];
Vue.set(this, 'availSearchData', res.data);
});
}
}

Answer 3

Possible explanations for this might be:
You don't declare the property in the component and thus normal
reactivity doesn't work.
You are using index as the key in your array. This might confuse the
reactivity system, so it does not necessarily know if the item
changed. Try using the name of the item as the key instead.

Answer 4

Try calling your function from mounted hook. I think the problem is that you are trying to show data when the DOM is not rendered yet. By calling your function in mounted you get data back after DOM has been rendered.
mounted() {
this.searching();
}
from Vue website "mounted: Called after the instance has been mounted, where el is replaced by the newly created vm.$el. If the root instance is mounted to an in-document element, vm.$el will also be in-document when mounted is called."