Vue 3 validation hooks

Fully typed form validation hooks for vue 3.

Installation

npm i -S light-vue3-validation

Usage

Validate single form item

For validating a single item you have to import a useValidate hook
useValidate hook returns a reactive typed object

reactive({
    model: Ref<T>;
    isValid: Ref<boolean>;
    modelRules: UnwrapRef<Record<TModelRule, boolean>>;
})

<template>
  <form @submit.prevent="submitForm">
    ...
    <input
        type="number"
        v-model="userIncome.model"
        class="input"
    />
    <p v-if="userIncomeError" class="input_error-message">{{ userIncomeError }}</p>
    ...
  </form>
</template>

<script setup lang="ts">
  import { computed } from "vue"
  import { useValidate } from "light-vue3-validation"
  
  const userIncome = useValidate<number>(0, ['required', 'numeric', { type: 'maxValue', value: 2000 }])
  
  const userIncomeError = computed<boolean | string>(() => {
    if (!userIncome.modelRules.required) return 'User income field is required'
    if (!userIncome.modelRules.numeric) return 'User income must be a numeric'
    if (!userIncome.modelRules.maxValue) return 'User income must be a equal or less then 2000$'
    return false
  })

  const submitForm = () => {
    if (userIncome.isValid) {
      // Do something ...
    }
  }
</script>

Validate an object

For validating an object import a useValidateObject hook
useValidateObject hook returns a reactive typed object

reactive({
    ...validatedFields,
    __isValid: boolean,
    __clean: // Clean object without model
})

<template>
  <form @submit.prevent="submitForm">
    ...
    <div class="mb-4">
      <input id="name" type="text" v-model="user.name.model" />
      <p v-if="userNameErrors" class="input_error-message">{{ userNameErrors }}</p>
    </div>
    
    <div class="mb-4">
      <input type="tel" v-model="user.name.model" />
      <p v-if="userPhoneErrors" class="input_error-message">{{ userPhoneErrors }}</p>
    </div>
    
    <div class="mb-4">
      <input type="text" v-model="user.role.model" />
      <p v-if="userRoleErrors" class="input_error-message">{{ userRoleErrors }}</p>
    </div>
    ...
  </form>
</template>

<script setup lang="ts">
  import { computed } from "vue"
  import { useValidateObject } from "light-vue3-validation"
  
  type User = {
    name: string
    phone: number
    role: 'Admin' | 'User'
  };
  
  const user = useValidateObject<User>({
    name: { model: '', rules: ['required'] },
    phone: { model: '', rules: ['required', 'numeric', { type: 'minLength', value: 9 }] },
    role: { model: '', rules: ['required'] }
  })

  const userNameErrors = computed<boolean | string>(() => {
    if (!user.modelRules.name.required) return 'Name is required'
    return false
  })
  const userPhoneErrors = computed<boolean | string>(() => {
    if (!user.modelRules.phone.required) return 'Phone is required'
    if (!user.modelRules.phone.numeric) return 'Phone must a numeric'
    if (!user.modelRules.phone.minLength) return 'Phone must be at least 9 digits'
    return false
  })
  const userRoleErrors = computed<boolean | string>(() => {
    if (!user.modelRules.role.required) return 'Role is required'
    return false
  })

  const submitForm = () => {
    if (user.__isValid) {
      // Do something ...
    }
  }
</script>

If some filed in your object not need validation just write an empty array in rules { model: '', rules: [] }

Also, you can use it without typescript, just don't write a types

Errors object in useValidate hooks will be soon

useValidate retrun

Key	Value
model	Generic <T>
isValid	boolean
modelRules	An object with key of validation keyword required, numeric etc... and value of boolean

useValidateObject return

key	Value
Keys of your object	Keys wrapped by useValidate hook key: { model: ..., isValid: ..., modelRules: { ... } }
__isValid	boolean. Returns true if all isValid keys of your object items becomes true
__clean	Returns computed clean object that you passed to hook with no wrapping by useValidate hook for each key

Rules

Rule name	Properties
alpha	Accepts only alphabetic characters (a-z and A-Z). Numbers will be failed
alphaNum	Accepts only alphabetic and numeric characters (a-z A-Z 0-9)
between	Accepts an array of range that your number will be. Example [10, 30]. Your number will be valid if it in this range
email	Accepts a string which is email
ipAddress	Accepts a string like ###.###.###.###
maxLength	Accepts a string which length is less then max value you passed
minLength	Accepts a string which length is more then min value you passed
maxValue	Accepts a number which is less then max value you passed
minValue	Accepts a number which is more then min value you passed
numeric	Accepts only number 0-9
required	Accepts anything and will be failed if model is empty