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Validate an email address in JavaScript

Published on Jan 26, 2020

This is my least favorite topic; validating email addresses. There are hundreds of examples using regular expressions that are all slightly different and all have there own quirks with them.

If validation must be done, I suggest only doing this on the client-side. Ideally the server-side performs email validation by sending an actual email that includes a unique link to validate the email is valid.

But if JavaScript is a must, here is the best one I've found.

Unit Testing Data Validation with MVC

Published on May 11, 2015

You've added some data validation and you want to test it out in action. The data validation can be standard data annotations, custom data attributes, or data validation implemented via an IValidatableObject. This article will explore how to leverage the ValidationContext to execute and assert the test results.

Removing Data Validation from MVC Controllers

Published on May 6, 2015

You require custom data validation that cannot be accomplished via the built-in data annotation validation attributes - or - your data validation requires access to multiple properties in your model. Let's explore how to leverage the IValidatableObject.

Unbind Model Validation in CakePHP

Published on Mar 28, 2009

Have you found yourself wanting to remove validation on a specific field in a specific form?  Yes?  Excellent, you found the right place.

If you haven't had the need for this, a great example of where you would want to accomplish this would be in a users edit form.  Normally in CakePHP we would encrypt the password, especially if you are using the AuthComponent, so we wouldn't want the password prefilled on our form.  Instead, we'll make it blank and place a note underneath that says "Only enter a password if you wish to change it".

The above shouldn't be difficult, however, when you go to use the form, you will get some unexpected results.  I keep getting a message saying that I must enter a password, because I had setup validation on that field for the registration process.  Below is a simple solution to this problem.