I am attempting to set up a map method in JavaScript and Vue that creates a new array of objects while returning only selected items in each object. To accomplish this, I set up a UI with 2 checkboxes corresponding to 2 separate objects:
<div v-for="object in objects" :key="object.id" >
<div >
<div >{{ object.name }}</div>
</div>
<span >
<span >
<input v-model="checkBoxArray" :value="object.id" @click="selectObject(object.id)" type="checkbox" />
</span>
</span>
</div>
const objects = [
{
id: 1,
name: 'bucky barnes',
title: 'winter soldier',
cellnum: '123-456-7890',
email: '[email protected]',
description: 'Description 1'
},
{
id: 2,
name: 'sam wilson',
title: 'falcon',
cellnum: '098-765-4321',
email: '[email protected]',
description: 'Description 2'
},
]
The selectObject handler on the checkbox input pushes the id of a selected object to checkBoxArray:
const checkBoxArray = ref([])
const selectObject = (id) => {
checkBoxArray.value.push(id)
}
Then, a watch property is used to watch for changes to checkBoxArray.value, then call a function that uses map to create a new array targeting the id of the selected object:
watch(checkBoxArray.value, () => {
const storedObjects = objects.map(val => checkBoxArray.value.find(obj => obj === val.id), ['id', 'name', 'title'])
console.log(storedObjects)
})
My expectation is the new array created will be an array with an object containing ONLY the id, name, and title from the original object. example:
{id: 1, name: 'bucky barnes', title: 'winter soldier'}
However, I currently only returning a new array with the id of the selected object. How can I go about setting up the map and find methods in the watch property to create a new array with an object containing ONLY id, name, and title?
Here is the full code:
<template>
<div>
<div v-for="object in objects" :key="object.id" >
<div >
<div >{{ object.name }}</div>
</div>
<span >
<span >
<input v-model="checkBoxArray" :value="object.id" @click="selectObject(object.id)" type="checkbox" />
</span>
</span>
</div>
</div>
</template>
<script setup>
import { onMounted, ref, watch } from 'vue';
const objects = [
{
id: 1,
name: 'bucky barnes',
title: 'winter soldier',
cellnum: '123-456-7890',
email: '[email protected]',
description: 'Description 1'
},
{
id: 2,
name: 'sam wilson',
title: 'falcon',
cellnum: '098-765-4321',
email: '[email protected]',
description: 'Description 2'
},
]
const checkBoxArray = ref([])
const selectObject = (id) => {
checkBoxArray.value.push(id)
}
watch(checkBoxArray.value, () => {
const storedObjects = objects.map(val => checkBoxArray.value.find(obj => obj === val.id), ['id', 'name', 'title'])
console.log(storedObjects)
})
onMounted(() => {
console.log(objects)
})
</script>
CodePudding user response:
There is no syntax of map function that filters the fields by 2nd argument:
// This parameter will not work