package template import ( "net/http" "github.com/pkg/errors" "gitlab.com/wpetit/goweb/service" ) // ServiceName defines the Tempate service name const ServiceName service.Name = "template" // Service is a templating service type Service interface { RenderPage(w http.ResponseWriter, templateName string, data interface{}) error } // From retrieves the template service in the given container func From(container *service.Container) (Service, error) { service, err := container.Service(ServiceName) if err != nil { return nil, errors.Wrapf(err, "error while retrieving '%s' service", ServiceName) } templateService, ok := service.(Service) if !ok { return nil, errors.Errorf("retrieved service is not a valid '%s' service", ServiceName) } return templateService, nil } // Must retrieves the template service in the given container or panic otherwise func Must(container *service.Container) Service { service, err := From(container) if err != nil { panic(err) } return service }