Comments on: Basic Pattern Matching Form Validation in CodeIgniter

By: Todd

Todd — Thu, 19 May 2011 23:19:40 +0000

Awesome mate. Just was I was looking for to validate phone numbers as well as postal codes.

By: delsuza

delsuza — Sat, 16 Apr 2011 23:56:06 +0000

in CI 2.0 you must change the constructor

public function __construct()
{
parent::__construct();
}

By: headtrip

headtrip — Thu, 28 Oct 2010 03:03:57 +0000

Hello, thanks for sharing this nice snippet.

I just came up with a date format which needs to look like “mm/dd/yyyy” and got an error.

I added “/” to the $characters array (and “\/” as well on $regex_characters array) and it fixed the small issue.

Other than that, thanks a lot and hope to see more of your work.

Regards

By: Pisyek

Pisyek — Mon, 05 Jul 2010 02:17:39 +0000

i have try your tutorial but somehow there is a problem with the lang file.

i need to name it my_form_validation_lang instead of form_validation_lang

thanks for the code…

nice sharing.

By: Michael Wales

Michael Wales — Thu, 08 Apr 2010 17:53:56 +0000

@Dan
My is_unique() involves a lot less work, but nonetheless good job on being inventive and coming up with a solution that meets your needs!

By: Dan

Dan — Thu, 08 Apr 2010 17:31:40 +0000

@Michael
I don’t know how you plan to implement the “is_unique” rule, but I have done this in the past. My way of doing it is to have the validation function take 2 param…the model name and the field name. Then I just have to have a “is_unique” function the specified model. The validation function then calls the is_unique function in the model and sends it the user input and the field name. The is_unique then chacks the database, and does its then, then returns TRUE or FALSE.

Here is how I use it:
$this->form_validation->set_rules(‘username’, ‘Username’, ‘trim|required|is_unique[user_model,username]‘);

Note: The actual function “is_unique” has a prototpye of “function is_unique($str, $params)” then I have to parse the $params variable out becasue of the way that the FormValidation library sends it.

If you would like to see the code let me know and I can shoot it over.

Dan

By: Michael Wales

Michael Wales — Thu, 25 Feb 2010 18:18:15 +0000

@Todd
Yeah, it’s definitely a pain in the ass. One of my favorite personal validation functions is is_unique, but you’ll have to wait for the CodeIgniter Cookbook for that one!

By: Todd Perkins

Todd Perkins — Thu, 25 Feb 2010 18:16:04 +0000

Very cool Michael! I hate always having to copy my callbacks from project to project.