AngularJS Essentials

Chapter 3
For the form, avoid using the name that has already been used inside the ngModel
directive; otherwise, we will not be able to perform the validation properly. It would
be nice to use some suffix for both the form and the field names as that would help to
make things clearer, thus avoiding mistakes.
Basic validation
The validation process is quite simple and relies on some directives to do the job. The
first one that we need to understand is the ngRequired directive. It could be attached
to any field of the form in order to intimate the validation process that the field is
actually required:
In addition to this, we could be a little more specific by using the ngMinlength and
ngMaxlength directives. It is really useful to fulfill some kinds of requirements such
as defining a minimum or maximum limit to each field.
In the following code, we are going to add a basic validation to our parking
application. From now on, the field plate will be a required parameter and
will also have minimum and maximum limits:
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