Dynamic data in GroupedTableScreen

[alagu]

I'm new to Rubymotion, so this question might be naïve.

I'm using GroupedTableScreen, and I have the table items to be pulled from remote server.

 def on_load
   BW::HTTP.get("http://remoteserver.com/api.json") do |response|
      @games_list = massage_data(response)
   end
 end

 def on_load
    @hometable ||= [{
      title: "List of games",
      cells: @games_list
    },
    {
      title: "Settings",
      cells:
        [{
        title: "Account", action: :account_settings
        },
        {
          title: "Notification", action: :notification_settings  
      }]
    }
  ]
 end

Unfortunately, this doesn't work because BW:HTTP is async. How do I update the cell data in GroupedTable?

[Swatto]

Simply add update_table_data after updating your instance variable in the callback.
And you should initialize your instance var before the callback.

def on_load
  @games_list = []

  BW::HTTP.get("http://remoteserver.com/api.json") do |response|
    @games_list = massage_data(response)
    update_table_data
  end

  @hometable ||= [
    {
      title: "List of games",
      cells: @games_list
    },{
      title: "Settings",
      cells:[
        {
          title: "Account", action: :account_settings
        },{
          title: "Notification", action: :notification_settings  
        }
      ]
    }
  ]
end

[alagu]

That worked, thanks @Swatto!

[jamonholmgren]

Are you actually getting your @games_list cells from the server? That's an interesting way to do it.

[alagu]

Yes. I'm getting it from a server. 
—
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On Mon, May 27, 2013 at 11:59 AM, Jamon Holmgren notifications@github.com
wrote:

Are you actually getting your @games_list cells from the server? That's an interesting way to do it.

Reply to this email directly or view it on GitHub:
#94 (comment)

[jamonholmgren]

Dynamically programming your app from a server. Sounds vaguely dangerous. :)

[alagu]

I show a loading icon when there is a request in progress. I'm also planning to cache it. Can you explain how it could be dangerous?

[jamonholmgren]

We allow setting any cell attribute in table_data, so if someone intercepted the request and returned something malicious, it would run. I can't think of anything offhand (hence the "vaguely") but it would be possible to change how your app works pretty easily.

[alagu]

Got it. I'm massaging data that comes from the server with few filters. So I guess it should be safe.

[jamonholmgren]

That's a good idea. What kind of app are you working on, if I might ask?

[alagu]

I'm trying to build a reader to read algorithm problems in Topcoder, for me to read problems, scribble possible solutions(paint), see best submitted solutions. Variable names in above snippets are not real :)

[jamonholmgren]

Nice!