validatorjs-riot

validatorjs for Riot.

Why use validatorjs-riot?

• Readable and declarative validation rules.
• Error messages with multilingual support.
• AMD/Require.js and CommonJS/Browserify support.

Installation

npm install validatorjs-riot

// using ES6 modules
import Validator from 'validatorjs-riot';
 
// using CommonJS modules
let Validator = require('validatorjs-riot');

Basic Usage

To apply validation rules, set ref and validate attributes.

<input type="text" ref="name" validate="required" value="" />
<input type="text" ref="email" validate="required|email" value="not an email address.com" />
 
<button type="button" onclick="{ register }">register</button>
 
<script>
let Validator = require('validatorjs-riot');
 
this.register = function() {
  // Riot v3
  let validation = new Validator(this.refs);
  // Riot v4
  let validation = new Validator(this.$$('[ref]'))
 
  console.log(validation.fails()); // true
  console.log(validation.passes()); // false
  console.log(validation.errors.first('name')); // 'The name field is required.'
  console.log(validation.errors.get('name')); // returns an array of all name error messages
  console.log(validation.errors.first('email')); // 'The email format is invalid.'
 
  if (validation.fails()) {
    this.errors = validation.errors.all()
    return
  }
  // ...
}
</script> 

To add a class to error fields or to display error messages

<input type="text" ref="name" validate="required" class="{ has-error : errors.name }" value="" />
<span if="{ errors.name }" each="{ error in errors.name }">{ error }</span>
<input type="text" ref="email" validate="required|email" class="{ has-error : errors.name }"
  value="not an email address.com" />
<span if="{ errors.email }" each="{ error in errors.email }">{ error }</span>

For Riot v4

validatorjs-riot handles the ref attribute as a field name. The ref attribute has been removed in Riot v4, but it can still be used.

If you want to use another attribute instead of the ref attribute, use the　key_name option.

<input type="text" field="name" validate="required" value="" />
<input type="text" field="email" validate="required|email" value="not an email address.com" />
 
<button type="button" onclick="{ register }">register</button>
 
<script>
let Validator = require('validatorjs-riot');
 
this.register = function() {
  let validation = new Validator(this.$$('[field]'), { key_name: 'field' });
 
  console.log(validation.fails()); // true
  console.log(validation.passes()); // false
  console.log(validation.errors.first('name')); // 'The name field is required.'
  console.log(validation.errors.get('name')); // returns an array of all name error messages
  console.log(validation.errors.first('email')); // 'The email format is invalid.'
 
  if (validation.fails()) {
    this.errors = validation.errors.all()
    return
  }
  // ...
}
</script> 

Available Rules

Validation rules do not have an implicit 'required'. If a field is undefined or an empty string, it will pass validation. If you want a validation to fail for undefined or '', use the required rule.

accepted

The field under validation must be yes, on, 1 or true. This is useful for validating "Terms of Service" acceptance.

after:date

The field under validation must be after the given date.

after_or_equal:date

The field unter validation must be after or equal to the given field

alpha

The field under validation must be entirely alphabetic characters.

alpha_dash

The field under validation may have alpha-numeric characters, as well as dashes and underscores.

alpha_num

The field under validation must be entirely alpha-numeric characters.

before:date

The field under validation must be before the given date.

before_or_equal:date

The field under validation must be before or equal to the given date.

between:min,max

The field under validation must have a size between the given min and max. Strings, numerics, and files are evaluated in the same fashion as the size rule.

boolean

The field under validation must be a boolean value of the form true, false, 0, 1, 'true', 'false', '0', '1',

confirmed

The field under validation must have a matching field of foo_confirmation. For example, if the field under validation is password, a matching password_confirmation field must be present in the input.

date

The field under validation must be a valid date format which is acceptable by Javascript's Date object.

digits:value

The field under validation must be numeric and must have an exact length of value.

different:attribute

The given field must be different than the field under validation.

email

The field under validation must be formatted as an e-mail address.

hex

The field under validation should be a hexadecimal format. Useful in combination with other rules, like hex|size:6 for hex color code validation.

in:foo,bar,...

The field under validation must be included in the given list of values. The field can be an array or string.

integer

The field under validation must have an integer value.

max:value

Validate that an attribute is no greater than a given size

Note: Maximum checks are inclusive.

min:value

Validate that an attribute is at least a given size.

Note: Minimum checks are inclusive.

not_in:foo,bar,...

The field under validation must not be included in the given list of values.

numeric

Validate that an attribute is numeric. The string representation of a number will pass.

required

Checks if the length of the String representation of the value is >

required_if:anotherfield,value

The field under validation must be present and not empty if the anotherfield field is equal to any value.

required_unless:anotherfield,value

The field under validation must be present and not empty unless the anotherfield field is equal to any value.

required_with:foo,bar,...

The field under validation must be present and not empty only if any of the other specified fields are present.

required_with_all:foo,bar,...

The field under validation must be present and not empty only if all of the other specified fields are present.

required_without:foo,bar,...

The field under validation must be present and not empty only when any of the other specified fields are not present.

required_without_all:foo,bar,...

The field under validation must be present and not empty only when all of the other specified fields are not present.

same:attribute

The given field must match the field under validation.

size:value

The field under validation must have a size matching the given value. For string data, value corresponds to the number of characters. For numeric data, value corresponds to a given integer value.

string

The field under validation must be a string.

url

Validate that an attribute has a valid URL format

regex:pattern

The field under validation must match the given regular expression.

Note: When using the regex pattern, it may be necessary to specify rules in pattern attribute instead of using pipe delimiters, especially if the regular expression contains a pipe character. For each backward slash that you used in your regex pattern, you must escape each one with another backward slash.

Example - Regex validation

<input type="text" ref="name" validate="required|size:3" value="Doe" />
<input type="text" ref="salary" validate="required" pattern="/^(?!0.00)\d\{1,3\}(,\d\{3\})*(.\d\d)?$/" value="10,000.00" />
<input type="text" ref="salary" validate="required" pattern="/^(19|20)[\d]\{2,2\}$/" value="1980" />

Error Messages

This constructor will automatically generate error messages for validation rules that failed.

If there are errors, the Validator instance will have its errors property object populated with the error messages for all failing fields. The methods and properties on the errors property object are:

.first(refName)

returns the first error message for a field, false otherwise

.get(refName)

returns an array of error messages for a field, or an empty array if there are no errors

.all()

returns an object containing all error messages for all failing fields

.has(refName)

returns true if error messages exist for a field, false otherwise

.errorCount

the number of validation errors

Target refs

<input type="text" ref="name" validate="required" value="" />
<input type="text" ref="email" validate="required|email" value="not an email address.com" />

// Riot v3
let validation = new Validator(this.refs, { target: ['name'] });
// Riot v4
let validation = new Validator(this.$$('[ref]'), { target: ['name'] });
 
validation.fails(); // true
validation.passes(); // false
 
// Error messages
validation.errors.first('name'); // 'The name field is required.'
validation.errors.get('name'); // returns an array of all name error messages
validation.errors.first('email'); // false
validation.errors.get('email'); // []

Except refs

// Riot v3
let validation = new Validator(this.refs, { except: ['name'] });
// Riot v4
let validation = new Validator(this.$$('[ref]'), { except: ['name'] });

Custom Attribute Names

To display a custom "friendly" attribute name in error messages, set ref-label or use .setAttributeNames()

<input type="text" ref="name" validate="required" ref-label="custom_name" value="" />

// Riot v3
let validator = new Validator(this.refs);
// Riot v4
let validator = new Validator(this.$$('[ref]'));
if (validator.fails()) {
  validator.errors.first('name'); // "The custom_name field is required."
}

or

<input type="text" ref="name" validate="required" value="" />

// Riot v3
let validator = new Validator(this.refs);
// Riot v4
let validator = new Validator(this.$$('[ref]'));
validator.setAttributeNames({ name: 'custom_name' });
if (validator.fails()) {
  validator.errors.first('name'); // "The custom_name field is required."
}

Alternatively you can supply global custom attribute names in your lang with the attributes property.

You can also configure a custom attribute formatter:

// Configure global formatter.
Validator.setAttributeFormatter(function(attribute) {
  return attribute.replace(/_/g, ' ');
});
 
// Or configure formatter for particular instance.
// Riot v3
let validator = new Validator(this.refs);
// Riot v4
let validator = new Validator(this.$$('[ref]'));
validator.setAttributeFormatter(function(attribute) {
  return attribute.replace(/_/g, ' ');
});
if (validator.fails()) {
  console.log(validator.errors.first('first_name')); // The first name field is required.
}

Note: by default all _ characters will be replaced with spaces.

Custom message

To display a custom "friendly" error messages, set custom-message

<input type="text" ref="year" pattern="/^(19|20)[\d]\{2,2\}$/" custom-message="The year format is 19xx or 20xx" value="" />
<input type="text" ref="year" pattern="/^(19|20)[\d]\{2,2\}$/" custom-message="regex:The year format is 19xx or 20xx" value="" />
<input type="text" ref="year" pattern="/^(19|20)[\d]\{2,2\}$/" custom-message='\{"required":"Required!", "regex":"The year format is 19xx or 20xx"\}' value="" />
<input type="text" ref="year" pattern="/^(19|20)[\d]\{2,2\}$/" custom-message="\{&quot;required&quot;:&quot;Required!&quot;, &quot;regex&quot;:&quot;The year format is 19xx or 20xx&quot;\}" value="" />

// Riot v3
let validator = new Validator(this.refs);
// Riot v4
let validator = new Validator(this.$$('[ref]'));
if (validator.fails()) {
  validator.errors.first('year'); // "The year format is 19xx or 20xx"
}

Language Support

Error messages are in English by default.

In Node, it will automatically pickup on the language source files.

let Validator = require('validatorjs-riot');
Validator.useLang('ru');

If you don't see support for your language, please add one to src/lang!

You can also add your own custom language by calling setMessages:

Validator.setMessages('lang_code', {
  required: 'The :attribute field is required.'
});

Get the raw object of messages for the given language:

Validator.getMessages('lang_code');

Switch the default language used by the validator:

Validator.useLang('lang_code');

Get the default language being used:

Validator.getDefaultLang(); // returns e.g. 'en'

Override default messages for language:

let messages = Validator.getMessages('en');
messages.required = 'Whoops, :attribute field is required.';
Validator.setMessages('en', messages);