Details

Provides a decorative AR-esque layer over CoreData so you can do stuff like:

p = Post.create()    

p.title = "Post Title"
p.date  = NSDate.date
p.body  = "CoreData is the confusing shit!"
p.save  

posts = Post.all       

a = Animal.create({:name => 'OctoCat'})   
a.save

Although RCoreData makes everything much easier I recommended that you read up on CoreData and familiarize yourself anyway. Bugs in abstraction are fucking frustrating to solve when you don't understand what the magic is doing.

Installation

Git clone into lib and require 'lib/rcoredata/rcoredata'. Sorry, no macgem at the moment; I'll do that eventually.

You'll need to make sure a compiled .mom for your CoreData models ends up AppName.app/Resources/AppName.mom.

If you're using HotCocoa (and who isn't?) you just have to add the info for your data models to your app-spec and then HotCocoa will copy it over and compile when you run MacRake.

s.data_models = %W{data/AppName.xcdatamodel}

Usage

Create your models using XCode then extend RCoreData::Model

class Post < RCoreData::Model      
end

It automagically creates model objects and the ManagedObjectContext will sit in model_instance.moc

Save/delete

• Save: model.save()
• Delete: model.delete

Queries

Simple find query:

class Account < RCoreData::Model       
  def self.find_account_by_email(email)    
    query  = "email == '#{email}'"  
    moc    = RCoreData::DataStore.find_by_entity_name("Account", 1, nil, query)   
    entity = NSEntityDescription.entityForName("Account",
      inManagedObjectContext:RCoreData::DataStore.moc)       
     
    return self.create_model_object(entity, moc[0])
  end 
end

Misc

Name method. The CoreData mom for account doesn't have a name field, only first_name and last_name.

class Account < RCoreData::Model 
  def name=(name)     
    n = name.split(",").join(" ").split(" ").uniq     
    if n.length > 0
      self.first_name = n[0] 
      self.last_name  = n[1]            
    else
      self.first_name = n[0] 
    end           
  end   
end

Examples

• Simple Post/Blog app: Provides a list of Posts and CRUD; and that is all. https://github.com/bookworm/rcoredata_demo_blog

License

License under Do What The Fuck You Want To Public License http://sam.zoy.org/wtfpl/. AKA The don't be an asshole license.

Support

If you found this repo useful please consider supporting me on Gittip or sending me some bitcoin 1csGsaDCFLRPPqugYjX93PEzaStuqXVMu