New Feature: Custom validation rules

Hi Tuan, thank-you for picking this up.

Yes, basically the idea is to have a file (php file) where we can build whatever number of functions we want. Then, in the EB custom fields creation, we specify the name of the function we want to call to validate the field's content. This way, if we don't specify anything, the field will not be checked against any special rule. If we specify a function name, then EB will look into the php file and search for that validation function. It will return true or false depending on the result of the function. So, a "False" will not accept the field's contents, like when you don't put a correct email into an email field or a phone number in the right field in your pre-defined fields.

Hope this makes sense.

Thanks!

Andrea.

I will think to see what's the best way to handle this requirement. As of right now, the way we work (with core) is that when a validation is failed, there should be an error message returned to explain the error

Maybe there should be something similar to custom validation, too. The system will pass the value of the field to method call / rule and then that custom rule will check. If it's not valid, then it will return an error message. If it's valid, nothing is returned

Yes, I think that would be a good idea. Clearly we could go as further as we potentially like, for example to can customize in the php the error message we want to be displayed for every rule (assigning the error message to a string in the fuction, to be returned to the form) but as a minimum a generic fail message could be OK. I'm thinking at something like "Invalid Entry" or similar.

I'd suggest the function should accept an array containing the field values, and returns true if valid or an error string if not. You want all the filled in fields in the array so the validation can implement dependencies.

The is validation library currently used dues support custom validations and we actually currently use this, but you really want the validation also performed server side.

Thinking about it for a while, I decided that I will implement this server side validation library respect.github.io/Validation/

It supports so many custom validation rules respect.github.io/Validation/docs/validators.html , so it would work for most of the case. I will see how we can add custom validation rule too it, too and will make a document for it

Tuan

Awesome!

That's great news, Tuan!

Hello Tuan, I'm not familiar with the library you mention, nevertheless the fact you are working on this is simply awesome! Can't wait to start using it !

Thanks!

Andrea

Just for your information, here is what was implemented eventbookingdoc.joomservices.com/basic-s...eld-data-server-side and will be available in next release. You can use both existing validators or build custom validators yourself

Regards,

Tuan

Tuan,
I just want to check, having read the documentation I'm assuming the validation is for a single field? Is it possible to access the other fields on the page in the validation?

Just checking, we want to be able to check several fields but how they are checked would happen as a group so would be handy if you can access the other fields.

thanks
Russ