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Hands-On Full Stack Web Development with Aurelia by Erikson Haziz Murrugarra Sifuentes, Diego Jose Arguelles Rojas

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Improving our application forms – Validators

We know how the binding engine of Aurelia works. Also, we know how to intercept and customize that binding behavior. We know too how to transform data between View-ViewModel layer according to our needs. Just some things are pending, and the aurelia-validation plugin is one of them. When you need data provided by the user, you have to expect anything. The user didn't know your app. He will do anything he wants, and you need to be prepared for that. You need to ensure that data provided by the user is, at least, in the right format your back service is expecting. You need to filter just the right values and send alerts to the user telling which values are wrong and how they can fix it. We often ...

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