How can I add loading ONLY to the clicked button in vuejs?

Question

There is a table which loops and outputs the data which comes from API. I have added a button inside the table. When you click it, it should send the id of the clicked button and till it recieves the data of the function which needs to be printed, it should be in loading. Here is my code.

<table id="customers">
  <tr>
    <th>{{$t('message.numberReport')}}</th>
    <th>{{$t('message.periodFrom')}}</th>
    <th>{{$t('message.periodTo')}}</th>
    <th>{{$t('message.printButton')}}</th>
  </tr>
  <tr v-for="(item,index) in getReportInfo" :key="index">
    <td>{{ item.id }}</td>
    <td>{{ item.periodFrom }}</td>
    <td>{{ item.periodTo }}</td>
    <td>
      <v-btn
        class="primary"
        :loading="loading"
        :disabled="loading"
        @click="fetchGetReportDetailed(item)"
      >{{ $t('message.printButton')}}</v-btn>
    </td>
  </tr>
</table>                    

But when I clicked the particular button, all the buttons are getting in loaded mode. How do I fix it? Any suggestion would be deeply appreciated.here is the visual example

Answer 1

Using index of item in list.

You can register a new variable in your data for example indexClicked .

data () {
    return {
        // Some predefined value, 0 isn't good because index can be 0.
        indexClicked: undefined // Some predefined value
    }
}

And when you click at button you can send index value:

<td>
<v-btn class="primary"
       :loading="loading && indexClicked === index" 
       :disabled="loading && indexClicked === index" 
       @click="fetchGetReportDetailed(item, index)">
       {{ $t('message.printButton') }}
</v-btn>
</td>

And in your fetchGetReportDetailed(item, index) method you need to assign index to this.indexClicked like:

fetchGetReportDetailed (item, index) {
    // Your code
    this.indexClicked = index;
}

This should work. But if you need more information please provide more code.

Note if you have a problem with multiple conditions in :disable you can create a method which will return true or false depends on condition loading && this.indexClicked === index.

Good luck!

Answer 2

You're using a single data property for all rows, so in mounted hook add a property called loading to each row like :

mounted(){
   this.getReportInfo=this.getReportInfo.map(rep=>{
               rep.loading=false;
             return rep;
         });
}

and the template do:

   <tr v-for="(item,index) in getReportInfo" :key="index">
                            <td>{{ item.id }}</td>
                            <td>{{ item.periodFrom }}</td>
                            <td>{{ item.periodTo }}</td>
                            <td><v-btn  class="primary" :loading="item.loading" :disabled="loading"  @click="fetchGetReportDetailed(item,index)" >{{ $t('message.printButton')}}</v-btn></td>
                        </tr>

in fetchGetReportDetailed method :

fetchGetReportDetailed(item,index){

....

this.getReportInfo[index].loading=true;
this.$set(this.getReportInfo,index,this.getReportInfo[index])
}