ResponseTrait.groovy

import grails.compiler.GrailsCompileStatic
import groovy.transform.SelfType
import grails.artefact.Controller
import org.springframework.http.HttpStatus

import static org.springframework.http.HttpStatus.*

@SelfType(Controller)
trait ResponseTrait {

    void notFound() {
        renderStatus NOT_FOUND
    }

    void ok() {
        renderStatus OK
    }

    void created() {
        renderStatus CREATED
    }

    void badRequest() {
        renderStatus BAD_REQUEST
    }

    void noContent() {
        renderStatus NO_CONTENT
    }

    void renderStatus(HttpStatus status) {
        render status: status
    }

    /*
        Takes a validatable object and responds the object or with its errors
        Can force validation method as well
     */
    void validationRespond(def validatableObj, boolean shouldValidate = false) {
        if(validatableObj == null) {
            notFound()
            return
        }
        if(shouldValidate) {
            validate?.validate()
        }
        if(validatableObj?.hasErrors()) {
            respond(validatableObj.errors)
        } else {
            respond(validatableObj)
        }
    }
}