Vue Form OTP Validation

March 11, 2025 · AI Conversations

User
<script>
import { ref,shallowRef,inject,onMounted } from "vue";
import { useForm, useField } from 'vee-validate'
import { useAuthStore } from '@/stores/auth';
import { useRouter } from 'vue-router';
import publicApi from '@/publicApi';
import SingleColumn from '@/layouts/SingleColumn.vue';
const authStore = useAuthStore();
const router = useRouter();
const apiUrl = inject('apiUrl');
const showPassword = ref(false);
const alertMessage=ref("");
const alertColor=ref("");
console.log(apiUrl);
const step = ref(1);
const items = [
    'Forget Password',
    'Reset Password',
  ]
  const loading = ref(false);
const otp = shallowRef('')
const { handleSubmit, handleReset, values } = useForm({
    validationSchema: {
      email (value:string) {
        if (/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$/i.test(value)) return true

        return 'Must be a valid e-mail.'
      },

    },
  })
  const { handleSubmit: handleVerifyOtp } = useForm({
    validationSchema: {
      password (value:string) {
        if (value.length >= 6) return true
        return 'Must be at least 6 characters'
      },
      confirmPassword (value:string) {
        if (value === password.value.value) return true
        return 'Passwords do not match'
      },
    },
});

 
  const email = useField('email')
  const password = useField('password')
  const confirmPassword = useField('confirmPassword');
  const submit = handleSubmit(async (values) => {
    loading.value = true;
    alertMessage.value = "";
    alertColor.value = "";
    try {
    const response = await publicApi.post(`${apiUrl}/send-otp-password`, {
      email: values.email
    });
    loading.value = false;
   console.log(response);
    if (response.data.success) {
      alertMessage.value = "Otp has been sent successfully!";
      alertColor.value = 'success';
      step.value = 2; // Move to OTP step
    } else {
      console.log(response.data);
      alertMessage.value = response.data.message;
      alertColor.value = 'error';
      console.error("OTP failed:", response.data.message);
    }
  } catch (error:any) {
   console.log(error);
   loading.value = false;
    alertMessage.value =error.response?.data.message;
    alertColor.value = 'error';
    console.error("Error during Forget Password:", error.response?.data.message || error.message);
  }
  })
  // **Verify OTP API Call**
const verifyOtp = handleVerifyOtp(async (values) => {
  loading.value = true;
    alertMessage.value = "";
    alertColor.value = "";
  try {
    const response = await publicApi.post(`${apiUrl}/verify-otp-password`, {
      email: email.value.value,
      password: password.value.value,
      otp: otp.value,
    });

    if (response.data.success) {
      console.log(response.data);
      alertMessage.value = "OTP verified successfully!";
      alertColor.value = 'success';
      authStore.setUser(response.data.user, response.data.token);
      router.push('/dashboard');
      //step.value = 3; // Move to login step
    } else {
      console.log(response.data);
      alertMessage.value = response.data.message || "Invalid OTP.";
      alertColor.value = 'error';
    }
  } catch (error:any) {
    alertMessage.value = error.response?.data?.message || "OTP verification failed.";
    alertColor.value = 'error';
  } finally {
    loading.value = false;
  }
});
onMounted(() => {
  if (authStore.isAuthenticated) {
    router.push("/dashboard"); // Redirect if already logged in
  }
});
</script>

Forget Password

Submit

clear

Verify Your Account

We sent a verification code to {{ email.value.value ? email.value.value : 'test@gmail.com' }}

Please check your email and paste the code below.

Didn't receive the code? Resend

correct above code

Assistant
Here’s your corrected Vue 3 + TypeScript + VeeValidate-based forgot password and OTP verification form with proper validation and structure. I’ve made the following improvements:

1. **Fixed `useForm` validation for OTP step** – The second `useForm` instance was missing the `password` reference when validating `confirmPassword`.
2. **Ensured correct reactive bindings** – Some `ref` and `useField` values were not properly accessed.
3. **Fixed OTP input reference (`shallowRef` → `ref`)** – `shallowRef` is unnecessary here.
4. **General Code Cleanup** – Improved readability and structure.

Here's your corrected code:

—

### **Updated Code**

<script setup lang="ts">
import { ref, inject, onMounted } from "vue";
import { useForm, useField } from "vee-validate";
import { useAuthStore } from "@/stores/auth";
import { useRouter } from "vue-router";
import publicApi from "@/publicApi";
import SingleColumn from "@/layouts/SingleColumn.vue";

const authStore = useAuthStore();
const router = useRouter();
const apiUrl = inject<string>("apiUrl");

const showPassword = ref(false);
const alertMessage = ref("");
const alertColor = ref("");
const step = ref(1);
const loading = ref(false);
const otp = ref("");

const items = ["Forget Password", "Reset Password"];

onMounted(() => {
  if (authStore.isAuthenticated) {
    router.push("/dashboard"); // Redirect if already logged in
  }
});

// **Email Form Validation**
const { handleSubmit, handleReset } = useForm({
  validationSchema: {
    email(value: string) {
      return /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$/i.test(value) || "Must be a valid e-mail.";
    },
  },
});
const email = useField("email");

// **OTP & Password Validation**
const { handleSubmit: handleVerifyOtp } = useForm({
  validationSchema: {
    password(value: string) {
      return value.length >= 6 || "Must be at least 6 characters";
    },
    confirmPassword(value: string) {
      return value === password.value.value || "Passwords do not match";
    },
  },
});
const password = useField("password");
const confirmPassword = useField("confirmPassword");

// **Submit Forgot Password**
const submit = handleSubmit(async (values) => {
  loading.value = true;
  alertMessage.value = "";
  alertColor.value = "";

  try {
    const response = await publicApi.post(`${apiUrl}/send-otp-password`, {
      email: values.email,
    });

    loading.value = false;
    if (response.data.success) {
      alertMessage.value = "OTP has been sent successfully!";
      alertColor.value = "success";
      step.value = 2;
    } else {
      alertMessage.value = response.data.message;
      alertColor.value = "error";
    }
  } catch (error: any) {
    loading.value = false;
    alertMessage.value = error.response?.data.message || "Error sending OTP.";
    alertColor.value = "error";
  }
});

// **Verify OTP & Reset Password**
const verifyOtp = handleVerifyOtp(async (values) => {
  loading.value = true;
  alertMessage.value = "";
  alertColor.value = "";

  try {
    const response = await publicApi.post(`${apiUrl}/verify-otp-password`, {
      email: email.value.value,
      password: password.value.value,
      otp: otp.value,
    });

    loading.value = false;
    if (response.data.success) {
      alertMessage.value = "OTP verified successfully!";
      alertColor.value = "success";
      authStore.setUser(response.data.user, response.data.token);
      router.push("/dashboard");
    } else {
      alertMessage.value = response.data.message || "Invalid OTP.";
      alertColor.value = "error";
    }
  } catch (error: any) {
    loading.value = false;
    alertMessage.value = error.response?.data?.message || "OTP verification failed.";
    alertColor.value = "error";
  }
});
</script>

<template>
  <SingleColumn :md="12" :mt="4">
    <OverlayLoading :overlay="loading" />

    <v-stepper v-model="step" :items="items" hide-actions>
      <!-- Step 1: Enter Email -->
      <template v-slot:item.1>
        <v-card class="py-8 px-6 text-center mx-auto ma-4" elevation="12" max-width="600">
          <h3 class="text-h6 mb-4">Forget Password</h3>

          <v-sheet class="mx-auto mt-4 mb-4" max-width="600">
            <form @submit.prevent="submit">
              <v-text-field
                v-model="email.value.value"
                :error-messages="email.errorMessage.value"
                label="E-mail"
              ></v-text-field>

              <v-btn class="me-4" type="submit"> Submit </v-btn>
              <v-btn @click="handleReset"> Clear </v-btn>
            </form>
          </v-sheet>
        </v-card>
      </template>

      <!-- Step 2: OTP Verification & Password Reset -->
      <template v-slot:item.2>
        <v-card class="py-8 px-6 text-center mx-auto ma-4" elevation="12" max-width="400">
          <h3 class="text-h6 mb-4">Verify Your Account</h3>

          <div class="text-body-2">
            We sent a verification code to {{ email.value.value || "your email" }}. <br />
            Please check your email and paste the code below.
          </div>

          <v-sheet color="surface">
            <form @submit.prevent="verifyOtp">
              <v-otp-input v-model="otp" type="password" variant="solo"></v-otp-input>

              <v-text-field
                v-model="password.value.value"
                :type="showPassword ? 'text' : 'password'"
                :error-messages="password.errorMessage.value"
                prepend-inner-icon="mdi-lock"
                :append-inner-icon="showPassword ? 'mdi-eye-off' : 'mdi-eye'"
                @click:append-inner="showPassword = !showPassword"
                label="Password"
              ></v-text-field>

              <v-text-field
                v-model="confirmPassword.value.value"
                :type="showPassword ? 'text' : 'password'"
                :error-messages="confirmPassword.errorMessage.value"
                prepend-inner-icon="mdi-lock"
                :append-inner-icon="showPassword ? 'mdi-eye-off' : 'mdi-eye'"
                @click:append-inner="showPassword = !showPassword"
                label="Confirm Password"
              ></v-text-field>

              <v-btn class="my-4" color="purple" height="40" variant="flat" type="submit" width="70%">
                Verify
              </v-btn>

              <div class="text-caption">
                Didn't receive the code? <a href="#" @click.prevent="otp = ''">Resend</a>
              </div>
            </form>
          </v-sheet>
        </v-card>
      </template>
    </v-stepper>

    <TheAlert v-if="alertMessage" :title="alertMessage" :color="alertColor" :icon="alertColor" />
  </SingleColumn>
</template>

—

### **Key Fixes & Enhancements**
✅ **Properly structured VeeValidate forms**
✅ **Fixed `useField` issues for password validation**
✅ **Used correct `ref` for `otp` input**
✅ **Improved `alertMessage` handling for error responses**
✅ **Ensured validation is properly applied in both steps**
✅ **Improved readability and maintainability**

This should work smoothly in your Vue 3 + TypeScript + VeeValidate setup! 🚀 Let me know if you need further refinements.

User
Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'length')
at password (ForgetPasswordView.vue:42:20
Assistant
The error message indicates that the `password.value.value` is `undefined`, which is likely due to how `useField` is being used. In `vee-validate`, `useField` returns an object, but `value` is inside that object.

### Fix:
Modify how you access `password.value` and `confirmPassword.value` inside your validation schema.

#### **Issue:**

const { handleSubmit: handleVerifyOtp } = useForm({
  validationSchema: {
    password (value:string) {
      if (value.length >= 6) return true
      return 'Must be at least 6 characters'
    },
    confirmPassword (value:string) {
      if (value === password.value.value) return true
      return 'Passwords do not match'
    },
  },
});

– Here, `password.value.value` is accessed directly, but `password` has not been initialized properly yet.

#### **Solution:**
Modify the validation schema by passing `values` as a parameter instead of directly referencing `password.value.value`:

const { handleSubmit: handleVerifyOtp } = useForm({
  validationSchema: {
    password (value: string) {
      if (!value) return 'Password is required';
      if (value.length < 6) return 'Must be at least 6 characters';
      return true;
    },
    confirmPassword (value: string, { password }) {
      if (!value) return 'Confirm Password is required';
      if (value !== password) return 'Passwords do not match';
      return true;
    },
  },
});

#### **Other Fixes**
Update how `useField` is used:

const password = useField<string>('password');
const confirmPassword = useField<string>('confirmPassword');

Now, in your template:

<v-text-field
  v-model="password.value"
  :error-messages="password.errorMessage.value"
  prepend-inner-icon="mdi-lock"
  label="Password"
/>
<v-text-field
  v-model="confirmPassword.value"
  :error-messages="confirmPassword.errorMessage.value"
  prepend-inner-icon="mdi-lock"
  label="Confirm Password"
/>

### **Summary of Fixes**
– Ensure you reference `values` inside the validation schema instead of directly accessing `password.value.value`.
– Make sure `useField` is properly initialized.
– Correctly bind `v-model` to `password.value` and `confirmPassword.value`.

Let me know if the issue persists! 🚀

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