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trait which provides a convenient method to validate incoming HTTP request with a variety of powerful validation rules.To learn about Laravel's powerful validation features, let's look at a complete example of validating a form and displaying the error messages back to the user.Adding these validation rules doesn't have to be a pain.First, create a Let's assume our web application is for game collectors.The field under validation must exist on a given database table. The field under validation must be an IPv4 address.The field under validation must be an IPv6 address.
The field under validation must start with one of the given values. If you would like to allow the field to also be Forcing A Unique Rule To Ignore A Given ID: Sometimes, you may wish to ignore a given ID during the unique check.
For example, you may wish to require a given field only if another field has a greater value than 100.
Or, you may need two fields to have a given value only when another field is present.
As mentioned previously, Laravel will automatically redirect the user back to their previous location.
In addition, all of the validation errors will automatically be flashed to the session.
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In some situations, you may wish to run validation checks against a field only if that field is present in the input array.