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Vue 3: How to handle multiple nested components with conflicting props updates?

šŸ‘€ Views: 49 šŸ’¬ Answers: 1 šŸ“… Created: 2025-06-17
vue.js vue-3 reactivity javascript

I recently switched to I'm working on a Vue 3 application where I have a parent component that renders multiple child components. Each child component is responsible for displaying a part of the data, and they all receive props from the parent. However, I am running into an issue where updating the data in one child component is unexpectedly affecting the others, leading to inconsistent UI states. For instance, in my parent component, I'm managing a `data` object that contains several nested properties: ```javascript export default { data() { return { items: [ { id: 1, name: 'Item 1', status: 'active' }, { id: 2, name: 'Item 2', status: 'inactive' }, ] }; }, methods: { updateStatus(id, newStatus) { const item = this.items.find(item => item.id === id); if (item) { item.status = newStatus; } } } }; ``` In each child component, I am rendering the corresponding item and providing a button to change its status: ```javascript <template> <div> <h3>{{ item.name }}</h3> <p>Status: {{ item.status }}</p> <button @click="changeStatus('active')">Set Active</button> <button @click="changeStatus('inactive')">Set Inactive</button> </div> </template> <script> export default { props: ['item'], methods: { changeStatus(newStatus) { this.$emit('update-status', this.item.id, newStatus); } } }; </script> ``` The problem arises when I click the button in one child component to update the status of its item. The change reflects correctly in the UI, but if I update another item shortly after, the first item's status reverts back to its previous state. I've verified that the parent component's `items` array is reactive, but I'm not sure if I’m mutating it correctly. The console logs show the correct values after the update, yet the UI doesn't seem to reflect this accurately. I suspect the issue might be related to how Vue handles reactivity with nested objects. I've tried using `Vue.set(this.items, index, updatedItem)` but it didn't resolve the issue. I'm also aware that using v-model might simplify some of the binding, but I need to understand how to manage the state correctly in this scenario. Any insights or best practices on how to solve this would be greatly appreciated!