Regular Expression Rules in Form Validation for Ext.CodeIgniter

Written on November 04, 2009 by Zaki and No one have comment

logoYes, I have a problem with CodeIgniter built-in Form Validation Library, the lack of direct Regular Expression test/rule is a huge turn off for me especially when I need to use Regular Expression to as a rule to verify user input.

There are alternative with the use of “callback” to by creating an additional method inside your Controller. The solution is good if you have a complex filtering but why bother when all you need to do is a simple RegExp verification. Based on my Twitter status:

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Simple Date Validation With JavaScript

Written on May 30, 2009 by Zaki and 2 peoples have comment

This is very simple approach to validate date input in DD-MM-YYYY format.

var validate_date = function(date) {
	if ( date.match(/^(\d{1,2})\-(\d{1,2})\-(\d{4})$/) ) {
		var dd = RegExp.$1;
		var mm = RegExp.$2;
		var yy = RegExp.$3;

		// try to create the same date using Date Object
		var dt = new Date(parseFloat(yy), parseFloat(mm)-1, parseFloat(dd), 0, 0, 0, 0);
		// invalid day
		if ( parseFloat(dd) != dt.getDate() ) { return false; }
		// invalid month
		if ( parseFloat(mm)-1 != dt.getMonth() ) { return false; }
		// invalid year
		if ( parseFloat(yy) != dt.getFullYear() ) { return false; }

		// everything fine
		return true;
	} else {
		// not even a proper date
		return false;
	}
};

Introducing GREP in Savvy.UI

Written on February 01, 2009 by Zaki and No one have comment

Savvy.UI version 1.1.3 bring a numbers of new utility function to help you code, among added are Jrun.pickGrep, Jrun.inArrayGrep and Jrun.indexOfGrep. So one would ask, how are these functions can make my life easier? Let me gave you one example;

// this is how things got done in Savvy.UI before 1.1.3
var someFunction = function(method) {
    // assign value of method, if method=null then assign GET
    var method = Jrun.pick(method, "GET");

    // ensure method only POST or GET, default is GET
    method = (method.match(/^(get|post)$/i) ? method : "GET");
}

Using Grep you can actually do it this way;

var someFunction = function(method) {
   var method = Jrun.pickGrep(method, "GET", /^(get|post)$/i);
}

3 JavaScript Regular Expression for Malaysia Data Format

Written on September 17, 2008 by Zaki and 10 peoples have comment

Question

Can you share with us the proper Regular Expression (RegExp) for Malaysia’s data format as the following:

  • Identification Card
  • Postcode
  • Phone Number

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