Validating fields

26 Dec

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.

The rules may be implemented through the automated facilities of a data dictionary, or by the inclusion of explicit application program validation logic.Rules can be collected through the requirements capture exercise.In evaluating the basics of data validation, generalizations can be made regarding the different types of validation, according to the scope, complexity, and purpose of the various validation operations to be carried out.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.Data validation rules may be defined, designed and deployed, for example: Definition and design contexts: Data that does not conform to these rules will negatively affect business process execution.Therefore, data validation should start with business process definition and set of business rules within this process.The form in this example asks user to provide some email addresses.User is also required to fill at least one email address. This kind of form can be seen in a lot of forms nowadays.A message at the top of the page tells the user they have made an error and describes what the error is; further down the page, the label for the erroneous field is in bold and red.This is significantly better than the sad practice some websites adopt of only highlighting the erroneous field in red or bold (without any description) and letting the user guess what went wrong.