#26 Form Validations in CodeIgniter 4 

Your way of explanation is very helpful for beginners. Keep posting.

May Allah Bless You Sir! Clearest explanation of every concept! Keep Shining!

Thank you so much sir. I will shared your channel in my face book also. this lesson series is great work.

clear enough to understand. keep going, thank you

Much valuable work! Completes official doc, which is not so clear on many points as V3 was (my opinion) Thank you very much !.

Congratulations on the CodeIgniter 4 video! I would like to know how to decide between validating field data directly in the entity's Modal class or using the validation done before, in the Controller, using the config that would be declared in the Config/Validation.php file or even in another local this setting?

Bro, the code in your video is not working. I think the validation library has changed in CI 4.1.4. The code "display_error($validation,'username')" generate undefined variable for $validation on loading the form. This is because the variable $validation is only created if there are validation errors.

The error "Undefined variable $validation", is occurring because the $data array is being passed to the view only for else condition. To resolve this, you need to make sure that the $data array is always passed to the view. Just add one line in your controller function "$data['validation'] = null;" after the "$data = [];" Also, you have to add the get and post routes i.e $routes->get('formvalidation', 'FormValidation::index'); $routes->post('formvalidation', 'FormValidation::index'); I hope this will resolve the issue.

Fantastic Marvellous Excellent...👌👌👌👌👌

Hello.. May i ask.. How to validate array input from from .. How to handle it ini controller and how to send old value into that form again.. Thank

this series helps a lot to me thank you

Hi, is set_value() will work for the radio and checkbox as well? Or need to use any other method?

Sir, how to create custom validation functions. Eg: $this->form_validation->set_rules('npwd', 'New Password', 'callback_check_password'); in CodeIgniter 3. Please replay

I have done exactly what had done but I'm facing an error: Undefined variable $validation. Can you tell me why I'm facing this error?

sir i am facing an error called ErrorException Undefined variable: validation showing in my span when i am using the logic for every field its working correctly. but using it with span it showing me error.

i got error undefined variable $validation .. please resolve me sir

Sir how to form validation using jQuery.

getMethod() is deprecated can you suggest me another way?

Error: Call to undefined function display_error() for this error solution :-

When i use GetMethod the codeiginter 4 automatically over strike the GetMethod .. clearly (GetMethod ka uper line lag jati ha 😑)

Call to undefined function display_error() getting this error sir

can u send me this code