Class: Nitron::Model

Inherits:
NSManagedObject
  • Object
show all
Defined in:
lib/nitron/data/model.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.all ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 4

def all
  Data::Relation.alloc.initWithClass(self)
end

.create(attributes = {}) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 8

def create(attributes={})
  model = new(attributes)
  model.save

  model
end

.destroy(object) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 15

def destroy(object)
  if context = object.managedObjectContext
    context.deleteObject(object)

    error = Pointer.new(:object)
    context.save(error)
  end
end

.entityDescription ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 24

def entityDescription
  @_metadata ||= UIApplication.sharedApplication.delegate.managedObjectModel.entitiesByName[name]
end

.find(object_id) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 28

def find(object_id)
  unless entity = find_by_id(object_id)
    raise "No record found!"
  end

  entity
end

.first ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 36

def first
  relation.first
end

.method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 40

def method_missing(method, *args, &block)
  if method.start_with?("find_by_")
    attribute = method.gsub("find_by_", "")
    relation.where("#{attribute} = ?", *args).first
  else
    super
  end
end

.new(attributes = {}) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 49

def new(attributes={})
  self.alloc.initWithEntity(entityDescription, insertIntoManagedObjectContext:nil).tap do |model|
    attributes.each do |keyPath, value|
      model.setValue(value, forKey:keyPath)
    end
  end
end

.order(*args) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 65

def order(*args)
  relation.order(*args)
end

.respond_to?(method) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/nitron/data/model.rb', line 57

def respond_to?(method)
  if method.start_with?("find_by_")
    true
  else
    super
  end
end

.where(*args) ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 69

def where(*args)
  relation.where(*args)
end

Instance Method Details

#destroy ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 80

def destroy
  self.class.destroy(self)
end

#inspect ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 84

def inspect
  properties = entity.properties.map { |property| "#{property.name}: #{valueForKey(property.name).inspect}" }

  "#<#{entity.name} #{properties.join(", ")}>"
end

#save ⇒ Object 



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# File 'lib/nitron/data/model.rb', line 90

def save
  unless context = managedObjectContext
    context = UIApplication.sharedApplication.delegate.managedObjectContext
    context.insertObject(self)
  end

  error = Pointer.new(:object)
  context.save(error)
end