Validating audio data
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 file under validation must have a MIME type corresponding to one of the listed extensions.
Even though you only need to specify the extensions, this rule actually validates against the MIME type of the file by reading the file's contents and guessing its MIME type.
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.
To quickly accomplish this, add the Sometimes you may wish to add validation rules based on more complex conditional logic.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.A full listing of MIME types and their corresponding extensions may be found at the following location: https://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types The field under validation must have a minimum values. The field under validation must be present in the input data but can be empty.The field under validation must match the given regular expression.
For example, consider an "update profile" screen that includes the user's name, e-mail address, and location.