RebbVal

DSL for Validation

What is RebbVal

Is RebbVal a validation library? Nope, RebbVal is a external DSL for validation. It makes writing validation rules easier and more natural. Since it is more human readable than most of existing validation libraries, it means less bugs.

A domain-specific language (DSL) is a computer language specialized to a particular application domain.

Language Support

Current supported languages:

• Javascript
• PHP
• Python3 (developing)

in the future We plan to support more languages include:

• C
• Python2

Highlights

• Human readable rules like "not empty" or ">=15"
• The ability to combine rules as you wish.
  • ">=18 and <=60"
  • "<18 or > 60"
  • "<18 or >60 and not(in [20,30,40,50])"
• Custom your own rules in two ways
  • Regexs: "match /\d+/"
  • Custom validators
• More than 30 validation rules and keep growing

Try RebbVal

Simply create a RebbVal object and call val function

// initialize a instance of Rebb Val
RebbVal v = new RebbVal();

// validates the input (100) is greater than 10(>10)
v.val(100,">10") // true

//or, is the input is less than 20?
v.val(100,"<20") //false

More validation rules

// if the input is greater than or equal to 18 and less then or equal to 60
v.val(50, "between 18 and 60") // true
// same as previous one, two dots represents a range
v.val(50, "[18..60]") // true

// greater than 18 and less than 60
v.val(60, "(18..60)" // false
// you can combine them
v.val(60, "(18..60]") //true
v.val(18, "[18..60)") //false

And you can combine two or more rules with and and or

v.val(60, ">18 and <60") // false

v.val(60, ">18 or <60") // true

Full Document