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Requests can be validated before begin handles. You can create a simple structure in the app/http/validation directory that should contain the content of a specific HTTP body request.

For instance if you need to validate a request that expects a json object with two specific fields you can create something like the following.

Example of validation structure
type Credentials struct {
Username string `json:"username" valid:"required"`
Password string `json:"password" valid:"required"`

As you can see the above structure contains two fields: Username and Password. Each of these fields has two different tags.

  • json tag is used to decode the raw json into a Golang struct. It used the standard encoding/json format.
  • valid tag is responsible for the request validation. There are several configurations that may help you to validate the request. Check the govalidator documentation for more information.

The last thing that you have to do to enable specific validation over a specific controller is register it in the Validation field of an HTTP router like the example below.

Validation in HTTPRouter intance
var AuthRouter = register.HTTPRouter{
Route: []register.Route{
Name: "login",
Path: "/login",
Action: "AuthController@JWTAuthentication",
Method: "POST",
Validation: &validation.Credentials{},
Description: "Perform login",
Middleware: []register.Middleware{},