2.2 KiB
2.2 KiB
title, impact, impactDescription, type, tags
| title | impact | impactDescription | type | tags | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Textarea Interpolation is One-Way Only - Use v-model for Two-Way Binding | HIGH | Using {{ text }} inside textarea displays initial value but user input does NOT update the ref | capability |
|
Textarea Interpolation is One-Way Only - Use v-model for Two-Way Binding
Impact: HIGH - Interpolation in textarea ({{ text }}) provides one-way binding only - it displays the initial value but user input does NOT update the ref. This creates a confusing disconnect where the textarea shows content but edits are silently lost.
Unlike v-model which provides two-way binding, interpolation only renders the initial ref value into the textarea. When users type, the ref remains unchanged, making form submissions return stale data. Always use v-model for two-way binding in textareas.
Task Checklist
- Never use interpolation inside textarea tags
- Always use v-model for textarea two-way binding
- Search codebase for
<textarea>{{patterns that may be silently broken - Add linting rules to catch this pattern if possible
Incorrect:
<script setup>
import { ref } from 'vue'
const message = ref('Hello World')
</script>
<template>
<!-- WRONG: One-way binding only! Shows initial value but edits don't update ref -->
<textarea>{{ message }}</textarea>
<!-- Also WRONG: User can type but changes are lost -->
<textarea>{{ userBio }}</textarea>
<!-- The textarea displays content but ref never updates -->
</template>
Correct:
<script setup>
import { ref } from 'vue'
const message = ref('Hello World')
</script>
<template>
<!-- CORRECT: Use v-model for textarea -->
<textarea v-model="message"></textarea>
<!-- For read-only display, still use v-model or :value -->
<textarea v-model="message" readonly></textarea>
<!-- Or one-way binding with :value -->
<textarea :value="message" readonly></textarea>
</template>
<!-- With placeholder and other attributes -->
<textarea
v-model="message"
placeholder="Enter your message..."
rows="5"
maxlength="500"
></textarea>