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boel

v1.0.8

Published

Form Data validation library

Downloads

5

Readme

BoelJS

Form Data validation library

Note : Work in progress

Usage

let b = makeBoel();
const rules = [ 
    b.field('name').isRequired().minLength(5).maxLength(100),
    b.field('email').isEmail().isRequired(),
]

let res = b.validate(rules, formData)
if(res.has_errors){
    //res.error_map[field_ame].message contains the error message
    email_error = res.error_map.email.message
}

Validate conditionally

    b.field('age').isBetween(10,60).message("Age out of range").onlyWhen("paying_now==1"),

    /** Compare between fields */
    b.field('current_salary').isGreaterThan('prev_salary'),

Shortcut for validating multiple fields, same validations

/** multiple fields at the same time */
b.fields("name", "email").areRequired().maxLength(100);
// Fields name and email are required with maxlength 100 (for both fields)

Customize/Translate Error message templates

/** change/translate message templates for all validations */
b.updateMessages({
    'Required':"{{field}} is required", 
    "MaxLength":"The input shouldn't exceed {{max_length}} characters"
})

List of Validations

Required

For example:

b.field("name").isRequired()

b.field("total").required()

MaxLength

checks the length of the input in characters

b.field("name").maxLength(32)

b.field("email").checkMaxLength(23)

b.fields("address1","address2").maxLength(52)

MinLength

requires a minimum length for the input

b.field("name").minLength(5)

b.field("email").checkMinLength(5)

Alphabetic

checks whether the input contains English Alphabetic Characters only An optional flag can be used to allow spaces in the input.

b.field("code").isAlphabetic()

b.fields("code1", "code2").areAlphabetic(/*allow spaces*/ true)

Alphanumeric

Allows English alphabetic and numeric characters in the input An optional flag can be used to allow spaces in the input.

b.field("code").isAlphaNumeric()

b.fields("code1", "code2").areAlphaNumeric(/*allow spaces*/ true)

Email

Checks the input to be in a valid email format. (It doesn't check the existence of the email)

b.field("user_email").isEmail()

b.fields("email1", "email2").areEmails()

Less Than

Compare the input to a fixed number

b.field("weight").isLessThan(80)

b.fields("luggage", "checkin").areLessThan(25)

Less Than Or Equal To

Check whether the input is <= a number

b.field("weight").lessThanOrEqualTo(82)

b.fields("luggage", "checkin").areLessThanOrEqualTo(35)