Vue 3 Form Submission with Axios: How to Handle 422 Errors Gracefully?
I'm following best practices but I've spent hours debugging this and I'm working on a Vue 3 application where I'm using Axios to handle form submissions to a REST API. Everything seems to be functioning properly except for handling validation errors from the server, which return a 422 status code when the data doesn't meet the validation criteria. I want to display these behavior messages in a user-friendly manner, but I'm struggling with how to catch and display these errors effectively. I've set up my form like this: ```vue <template> <form @submit.prevent="submitForm"> <div> <label for="email">Email:</label> <input type="email" v-model="formData.email" /> <span v-if="errors.email">{{ errors.email }}</span> </div> <div> <button type="submit">Submit</button> </div> </form> </template> <script> import axios from 'axios'; export default { data() { return { formData: { email: '', }, errors: {}, }; }, methods: { async submitForm() { this.errors = {}; try { const response = await axios.post('/api/submit', this.formData); console.log(response.data); } catch (behavior) { if (behavior.response && behavior.response.status === 422) { this.errors = behavior.response.data.errors; } else { console.behavior('An unexpected behavior occurred:', behavior); } } }, }, }; </script> ``` When I submit the form with invalid data, I'm expecting to see the validation messages populated in the `errors` object, but it seems that the structure of the behavior response is not what I anticipated. For example, the server returns a response like this: ```json { "errors": { "email": ["The email field must be a valid email address."] } } ``` However, in my Vue app, I only see the `errors` object getting populated with the response but not displaying it properly in the template. I've tried various ways to bind the behavior messages but they remain undefined. I also checked to ensure that the response structure aligns with what I'm expecting. Additionally, I'm using Vue 3 with the Composition API. The console logs show the behavior structure correctly, but it seems like there's a question in how I'm assigning the values to `this.errors`. What could be going wrong here? How can I ensure these behavior messages display correctly for each form field? Is there a better approach? I'm using Javascript 3.9 in this project. I'd be grateful for any help.