Error messages in Vue Form validator component

25 May 20247 minutes to read

The FormValidator provides default error messages for all default validation rules.
It is tabulated as follows

Rules message
required This field is required.
email Please enter a valid email address.
url Please enter a valid URL.
date Please enter a valid date.
dateIso Please enter a valid date ( ISO ).
number Please enter a valid number.
digit Please enter only digits.
maxLength Please enter no more than {0} characters.
minLength Please enter at least {0} characters.
rangeLength Please enter a value between {0} and {1} characters long.
range Please enter a value between {0} and {1}.
max Please enter a value less than or equal to {0}.
min Please enter a value greater than or equal to {0}.
regex Please enter a correct value.

Customizing Error Messages

The default error message for a rule can be customizable by defining it along with concern rule object as follows.

<template>
  <div class="wrap">

    <form id="form-element" class="form-horizontal">
      <div class="form-group">
        <div class="col-sm-3 control-label">Select Date</div>
        <div class="col-sm-6">
          <ejs-datepicker id="datepicker" name="date" class="form-control" placeholder="Select a date"></ejs-datepicker>
          <div class="error-element"></div>
        </div>
      </div>
    </form>
  </div>
</template>

<script setup>

import { DatePickerComponent as EjsDatepicker } from "@syncfusion/ej2-vue-calendars";
import { FormValidator } from "@syncfusion/ej2-vue-inputs";
import {onMounted} from 'vue';

onMounted(() => {
  var options = {
    rules: {
      date: { required: [true, "Select any value"] }
    },
    customPlacement: function (element, errorElement) {
      document.querySelector(".error-element").appendChild(errorElement);
    },
  };
  // defines FormValidator to validate the TimePicker
  new FormValidator("#form-element", options);
});

</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-inputs/styles/material.css";
.wrap {
  margin-top: 10px;
}
.error-element {
  margin-top: 5px;
}
#list_event {
  margin-top: 60px;
  padding-left: 5px;
  min-width: 200px;
}

#evt {
  border: 1px solid #dcdcdc;
  padding: 10px;
  min-width: 10px;
}

.eventarea {
  min-width: 250px;
}

#EventLog b {
  color: #388e3c;
}

.evtbtn {
  margin-top: 40px;
  margin-left: 70px;
}
</style>
<template>
  <div class="wrap">
    <form id="form-element" class="form-horizontal">
      <div class="form-group">
        <div class="col-sm-3 control-label">Select Date</div>
        <div class="col-sm-6">
          <ejs-datepicker id="datepicker" name="date" class="form-control" placeholder="Select a date"></ejs-datepicker>
          <div class="error-element"></div>
        </div>
      </div>
    </form>
  </div>
</template>

<script>

import { DatePickerComponent } from "@syncfusion/ej2-vue-calendars";
import { FormValidator } from "@syncfusion/ej2-vue-inputs";

export default {
  name: "App",
  components: {
    "ejs-datepicker": DatePickerComponent
  },
  mounted() {
    var options = {
      rules: {
        date: { required: [true, "Select any value"] }
      },
      customPlacement: function (element, errorElement) {
        document.querySelector(".error-element").appendChild(errorElement);
      },
    };
    // defines FormValidator to validate the TimePicker
    new FormValidator("#form-element", options);
  }
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-inputs/styles/material.css";

.wrap {
  margin-top: 10px;
}

.error-element {
  margin-top: 5px;
}

#list_event {
  margin-top: 60px;
  padding-left: 5px;
  min-width: 200px;
}

#evt {
  border: 1px solid #dcdcdc;
  padding: 10px;
  min-width: 10px;
}

.eventarea {
  min-width: 250px;
}

#EventLog b {
  color: #388e3c;
}

.evtbtn {
  margin-top: 40px;
  margin-left: 70px;
}</style>