What is the method to extract a value from the $emit payload using Vue.js?

I have a situation where I am sending an event with different values from my ConversationList component (child) to the ConversationModel component (parent).

Conversation List

getConversation(conversation_id, receiver_id, username, avatar){
  this.$emit('open-conversation', receiver_id, conversation_id, username, avatar);
}

ConversationModal

Vue devtools output

[2,1,"Jeff","http://i.pravatar.cc/52"]

Template

<converstations-list v-if="showConversation == false" v-on:open-conversation="getConversation($event)"></converstations-list>

Method

getConversation(event){
    console.log(event.payload[0] + event.payload[1] + event.payload[2] + event.payload[2])
},

Error

Error in event handler for "open-conversation": "TypeError: Cannot read property '2' of undefined"

I'm having trouble accessing the payload object that is shown in the devtools after firing the event. What could be causing this issue?

javascriptvue.jsvuejs2vue-component

Answer №1

When a child component emits an event to the parent component, you will receive the parameters exactly as they were emitted:

To handle this, remove $event from your getConversation method: 

<conversations-list v-if="showConversation == false" v-on:open-conversation="getConversation"></conversations-list>

Then, implement the getConversation function like this :

 getConversation(receiver_id, conversation_id, username, avatar){
     // Handle the parameters accordingly
   }

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