Method Params

req.go:856–878

Params is used to get the route parameters. Defaults to empty string "" if the param doesn't exist. If a default value is given, it will return that value if the param doesn't exist. Returned value is only valid within the handler. Do not store any references. Make copies or use the Immutable settin

(key string, defaultValue ...string)

// Returned value is only valid within the handler. Do not store any references.
// Make copies or use the Immutable setting to use the value outside the Handler.
func (r *DefaultReq) Params(key string, defaultValue ...string) string {
	if key == "*" || key == "+" {
		key += "1"
	}

	app := r.c.app
	route := r.c.Route()
	values := &r.c.values
	for i := range route.Params {
		if len(key) != len(route.Params[i]) {
			continue
		}
		if route.Params[i] == key || (!app.config.CaseSensitive && utils.EqualFold(route.Params[i], key)) {
			// if there is no value for the key
			if len(values) <= i || values[i] == "" {
				break
			}
			val := values[i]
			return r.c.app.GetString(val)
		}
	}
	return defaultString("", defaultValue)
}

// Params is used to get the route parameters.
// This function is generic and can handle different route parameters type values.