dynamically add input as well as dropdown in vuejs - vuejs2

Question

I m trying to add a dynamical input along with dropdown for that i m using vue-serach-select let me show my code then issue in detail
<template>
<button #click="addRow1"></button>
<table class="table table-striped">
<thead>
<tr style="font-size: 12px; text-align: center;">
<th class="span2" >Product Name</th>
<th class="span2" >Unit</th>
</tr>
</thead>
<tbody id="product_table_body">
<tr v-for="(row, index) in rows">
<td><model-list-select :list="productname"
option-value="product_name"
option-text="product_name"
v-model="row.selectproduct"
placeholder="Search Product Name"
#searchchange="searchprd3">
</model-list-select>
</td>
<td>
<input class="form-control-sm" type="text" v-model="row.new1" disabled="disabled" style="width: 100px;">
</td>
</tr>
</tbody>
</table>
</template>
<script>
export default {
data () {
return {
productname3:[],
rows:[],
}
},
methods:{
addRow1(){
this.rows.push({})
},
searchprd3(search,index){
},
}
}
</script>
now if i click on button one more row is added with dropdown now my problem is that how i can differentiate productname according to dynamic create row i had tried like :list="productname{index},:list="productname.index but none of them worked and last thing i want to pass index parameter in searchprd3 function so i tried like this searchprd3(search,index) in function I m getting index but it throw error for search and if only pass index then also throw error however it work none of parameter is passed from select like this #searchchange="searchprd3" but in function i m not getting index value or is there anyother way to achieve this thing
updated
<tr v-for="(row, index) in rows">
<td><model-list-select :list="row.productname"
option-value="product_name"
option-text="product_name"
v-model="row.selectproduct"
placeholder="Search Product Name"
#searchchange="searchprd3">
</model-list-select>
</td>
</tr>
<script>
searchprd3(searchText,index){
var _this=this
this.$http.get('/api/companyproducts?filter[where][product_name][ilike]=%'+searchText+'%').then(function (response) {
_this.rows.push({productname:response.data})
}).catch(function (error) {
console.log("error.response");
});
},
</script>
i want select option list seprate for every row but my code throw error like "Cannot read property 'map' of undefined"
that is why row push not working for dynamic row is I m missing Something
update2
found my mistake
addRow1(){
this.rows.push({
productnamex:[],
unit:'',
qty:'',
amt:'',
cgst:'',
sgst:'',
igst:''})
},
problem is that i haven't initialize my dropdown at rows click now another problem is that why my drop not get populated

Answer 1

try like this
<template>
<model-list-select :list="row.productnamex"
option-value="product_name"
option-text="product_name"
v-model="row.selectproduct"
placeholder="Search Product Name"
#searchchange="searchprd3($event,index,row)" >
</model-list-select>
</template>
<script>
addRow1(){
console.log(this.rows)
this.rows.push({ productnamex:[],unit:'', qty:'',amt:'', cgst:'', sgst:'', igst:''})
},
searchprd3(searchText,index,row){
console.log(index)
var _this=this
console.log(row)
this.$http.get('/api/companyproducts?filter[where][product_name][ilike]=%'+searchText+'%').then(function (response) {
console.log(response.data)
row.productnamex=response.data
}).catch(function (error) {
console.log("error.response");
});
},
</script>
hope this will help you as well as other enjoy :D

Answer 2

you should be able to do:
:list="productname+index"

Answer 3

You need to manually pass the index into the callback together with the searchtext in order for your searchprd3 method to receive both values.
This is where the inline $event variable in your event listener comes into the action. The $event variable contains the value that is supposedly passed to your callback by the event.
So if you want to pass additional data into the callback aside from the data that is passed by the event, you can manually call the callback function and pass the $event together with the data that you want to pass which in this case, the index variable.
Your event listener should look like this:
#searchchange="searchprd3($event, index)"