Using @extend for new type of model storage

[Ioannis Latousakis]

I am extending an application that works using Spine.Model.Local in order to support google drive realtime docs. 

I have completed the code that takes care of this process. Now I want to add it on any Model using a process same as @extend Spine.Model.Local.

The code I need to have only listens for events, and is not actually extending any existing Model methods. It looks like this:

rtc = require('rtc')

Spine.Model.Realtime = 

  @bind('update',rtc.saveJSON)

  @bind('destroy',rtc.deleteJSON) //< SyntaxError: Coffeescript Error: unexpected TERMINATOR when I dont intend on same level with Spine.mode.realtime

  Spine.bind("Model:fileUpdate",(event) -> modelMapUpdate(event))

  Spine.bind('Model:fileLoad',(map) -> loadModelMap(map)) 

Then I have defined two functions as well as an external JS file (rtc).

My problem is how I can add this to any Model class I need using the @extend, or something similar?

p.s I tried placing Spine.Mode.Realtime in node_modules/spine/src/ but it did not work. I am getting Uncaught Error: extend(obj) requires obj.

Also I keep getting this error : SyntaxError: Coffeescript Error: unexpected TERMINATOR  

p.s II: The above code works fine when its part of a Model class. I just need to take it out so that its reusable.

[Ioannis Latousakis]

Also posted same question on SO. http://stackoverflow.com/questions/17553681/extending-model-class-for-new-type-of-storage

[Miles Matthias]

I'm also looking to do something similar. I'm looking to create a model adaptor that uses both localStorage and Ajax. I'm also getting the same error you are.

Have you made any progress or updates on this? I saw you removed your SO question.

[Ioannis Latousakis]

I did not spent much time trying to do this. Instead I placed Spine.Model.Realtime inside my models folder. I just had to include it in my setup.coffee file found in app/lib and it works as expected. It would be better having it within the Spine folder but its not essential for me.

[Ioannis Latousakis]

My extension follows the same format as Local:

rtc = require("models/rtc")

Spine.Model.Realtime =

  extended:->

    @bind('update',rtc.updateJSON)

    @bind('create',rtc.createJSON)

    @bind('destroy',rtc.deleteJSON)

    Spine.Model.bind('Model:fileLoad',(map) =>

      @loadModelMap(map))

    Spine.Model.bind("Model:fileUpdate",(event) =>

      @modelMapUpdate(event))

     

    @idCounter = Math.random()

  loadModelMap: (map) ->

    ...

  modelMapUpdate: (event) ->

    ...

 

module?.exports = Spine.Model.Realtime

[Miles Matthias]

Thanks for the feedback, I'll let you know how it goes. I think a localStorage + Ajax adaptor would be commonly used so maybe the one I write can be pull-requested into the framework for others to use, but your Google Drive adaptor looks really cool too and I'd love to see it open sourced. A list of known model adaptors with github links on the spine site would be awesome to see too.

[Miles Matthias]

I ended up not doing this. I used the localStorage adaptors and created a sync manager to loop and update the server with local records.