Cedric Fung

yes, this work

select("(title, location, (latitude-#{lat})(latitude-#{lat}) + (longitude-#{lon})(longitude-#{lon})) AS distance")

but if I have many scope, ve...

I have two named scope

I don't wanna transfer all attributes through the mobile network, so I create a 'simple' scope

scope :tiny, select('title, location')

i...

this just a demo.
I won't use Event.select('title').select('location_title') directly. I just demonstrate the situation.

I use rails 3b4

this will return location_title

irb(main):001:0> Event.select('title').select('location_title').limit(1)
=> [#<Event location_title: "Shanghai"...

I use ruby 1.9.2 preview3 and rails 3b4

The simple select works well

irb(main):042:0> Event.select('title').limit(3).to_xml
=> "<?xml version=\"1.0\" encoding=...

It won't work, my log output

this from beta3

======================================
params[:format] = xml
======================================
Processing by ...

but I use new responder syntax in rails 3

class UsersController < ApplicationController
  respond_to :html, :mobile
  
  def index
    @users = User.all
    re...

I have some code like this

before_filter :detect_browser

def detect_browser
  params[:format] = 'mobile' if request.headers["HTTP_USER_AGENT"].match(MOBILE_BR...