Eureka: Form data validation

[ffittschen]

Hi, is there any way of validating the data of the rows like the validations in XLForm?

It would be nice to e.g. only activate a specific ButtonRow if the whole form is valid and this depends upon the validations of each row (e.g. row 1,2 and 3 must not be empty)

[thediary]

Yes! Please add form validation from XLForm! High priority for my team before we are able to make the switch

[jpaas]

Yes please. This is the only reason I haven't switched from XLForm.

[abbasmousavi]

It would be very useful if Eureka had automatic validation for numbers, phone numbers, email, ..., Custom validation function for fields and ability to display validation error in each field.

[shanmarkus]

• 1

[bakomchik]

Hi guys. Thanks for Eureka!

• 1!
  It would be very cool !

[ndmeiri]

👍

[bryanbartow]

+1

[w-k-s]

+1

[hesyifei]

+1

[abelondev]

+1

[vertuxx]

+1!!

[akabab]

+2

[tedgonzalez]

+1

In the meantime, please follow/contribute to this SO question

Thanks to you! - from newbie's like me

[shanmarkus]

i was using SwiftValidator for validate text field for each cell.

[jpaas]

I've been using SwiftValidate in the following way...

set up my validator chain and a property to hold the last calculated valid state:

  var formValid = false
  var validationIterator: ValidationIterator!

  func configureValidation() {
    validationIterator = ValidationIterator() {
      $0.resultForUnknownKeys = true
      $0.registerChain(ValidatorChain() {
        $0.stopOnException = true
        $0.stopOnFirstError = true
        }
        <~~ ValidatorRequired()
        <~~ ValidatorStrLen() {
          $0.minLength = 2
        }
        , forKeys: [Row.FirstName, Row.LastName]
      )
    }
  }

Validate after form initialization and after each row value change. You can also use the formValid state as a row condition:

      <<< NameRow(Row.LastName) {
        $0.title = "Last name"
        $0.value = lastName
        }.onChange { [weak self] _ in
          self?.validate()
      }

      <<< ButtonRow(Row.Submit) {
        $0.title = "Save"
        $0.disabled = Condition.Function([], { (form) -> Bool in
          return !self.formValid
        })
        $0.onCellSelection { cell, _ in
          self.submitPressed()
        }
      }

validate like this:

  func validate() {
    formValid = validationIterator.validate(form.values())
    submitRow?.evaluateDisabled()
    navigationItem.rightBarButtonItem?.enabled = formValid
    // Display the error somewhere
  }

[Opelor]

Hi @shanmarkus, can you show an example of how are you using SwiftValidator. Thanks.

[demetrio812]

Hello @Opelor I've just committed a first working version of Eureka SwiftValidator TextRow:

https://github.com/demetrio812/EurekaSwiftValidatorComponents

Let me know and feel free to suggest improvements.

Cheers,
Dem

[Opelor]

Hi @demetrio812! I've just tested the example and it's a great start!

The first suggestion is to have the ability to customize the validation messages ("This field is required", "Must be a valid email address"..etc.). The main reason being translation.

Great Contribution!!

[demetrio812]

Hello @Opelor ,
that's already supported by SwiftValidator:

$0.rules = [RequiredRule(message: "My custom message")]

You can also create your own rules.

Let's avoid spamming here though, please write any other suggestion on the project page.

Thanks,
Dem

[txaiwieser]

My team is also depending on this Feature to be able to migrate. We were using Validator on normal fields (https://github.com/adamwaite/Validator)

[violabg]

any updates on this?

[mtnbarreto]

Finally we implemented build-in validations feature in Eureka 2.0.0-beta.1 version, Notice that this version only works on swift3. Take a look at the readme and example project for more info about how to use it.
Any feedback is welcome.

Regards

[ffittschen]

Awesome, thanks! I'm currently migrating to the 2.0.0-beta.1 and will let you know if I find anything worth to mention

[mtnbarreto]

👍 this could be helpful ... https://github.com/xmartlabs/Eureka/blob/master/Documentation/Eureka%202.0%20Migration%20%20Guide.md