Hi Jeff, I'm no guru but I wouldn't put the methods for dealing with the collection into the model class.
You could indeed have a class array (by using the @@prefix for your variable name) but you could not easily access it in a KVC compliant manner and therefore could not directly bind it to an NSArrayController. Steve On 17 May 2013, at 19:52, Jeff Dyck <fsjj...@gmail.com> wrote: > Hey, > > I'm working on developing an app in MacRuby that uses HTTParty to consume a > Web Service. I'm hoping someone can help me wrap my head around some of the > Model - View - Controller stuff... > > From reading some tutorials on MacRuby (and RubyMotion), it seems that it's > best practice to have all the HTTP requests for loading, saving and querying > objects as part of the model, rather than in the controller (which is what > I've done in the past)... > > I can wrap my head around saving and deleting objects in the Model, but > wondering about loading objects - in particular when there are many objects > to be loaded... If my code to load the JSON is embedded in the Model as a > Class Method, can I also have a Class Array to store them? And if so can I > bind that to an NSArray Controller and use that to feed my UI? > > IE: I have a class of 'sites' which is basically a list of schools in our > District, and simplified looks something like: > > class Site > require 'httparty' > include HTTParty > format :json > base_uri 'http://webservice.address.here' > > attr_accessor :siteArray > attr_accessor :siteArrayController > > PROPERTIES = [:id, :code, :name, :server, :location, :saved] > PROPERTIES.each { |prop| attr_accessor prop } > > def self.getAllSites > siteArray = NSMutableArray.new > > get('/sites').parsed_response.each do |site| > siteArrayController.addObject(self.new(site)) > end > end > > def initialize(attributes = {}) > attributes.each { |key, value| > self.send((key.to_s + "=").to_s, value) > } > > if @id.nil? then > @saved = false > else > @saved = true > end > end > end > > Basically, I would like to call from the main App Delegate something like > Site.getAllSites, which would talk to the Web Server, load and parse the json > and init the actual objects, adding them to the siteArray, which would in > turn populate the UI via Bindings. > > So I guess my questions are: > 1) Am I crazy trying to do it like this? > 2) How do I define the siteArray and siteArrayController so that they are > Class variables (rather than object variables) and can be bound to the UI? > > Thanks in advance for anyone who can point me in the right direction. > > Jeff > _______________________________________________ > MacRuby-devel mailing list > MacRuby-devel@lists.macosforge.org > https://lists.macosforge.org/mailman/listinfo/macruby-devel
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