Question

Imagine this controller:

class exampleController{

def action1 = {}

def action2 = {}

def action3 = {}

def action4 = {}

def action5 = {}

}

I want to be able to return in all the action in this controller the same params. Imagining this:

def user = session.user    
[user: user]

Is there any way of doing this, besides writing all the same code on all the actions? The session.user return params is just an example. I don’t wanna really return it.

Answer 1

A simple solution is to put this code in a method and call it from each action

class exampleController{

  def action1 = {getModel()}

  def action2 = {getModel()}

  def action3 = {getModel()}

  def action4 = {getModel()}

  def action5 = {getModel()}

  private getModel() {
    def user = session.user    
    [user: user]    
  }
}

While this does involve some amount of repetition (invocation of the same method), it’s a lot more obvious what’s happening here. When debugging/testing a controller it’s easy to forget about filters and interceptors, which can often lead to questions like

what the @**% is going on here?