Module: MiniModel::ClassMethods

Included in:
MiniModel
Defined in:
lib/minimodel.rb

Instance Method Summary collapse

Instance Method Details

#all ⇒ Object 



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# File 'lib/minimodel.rb', line 44

def all
  index.values
end

#count ⇒ Object 



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# File 'lib/minimodel.rb', line 48

def count
  index.length
end

#find(primary_key, &block) ⇒ Object 



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# File 'lib/minimodel.rb', line 90

def find(primary_key, &block)
  index.fetch(primary_key, &block)
end

#indexed_by(primary_key, options = {}) ⇒ Object 



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# File 'lib/minimodel.rb', line 56

def indexed_by(primary_key, options = {})
  @primary_key = primary_key

  @auto_increment = options[:auto_increment] ? 1 : nil
end

#insert(attributes) ⇒ Object 



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# File 'lib/minimodel.rb', line 72

def insert(attributes)
  unless @auto_increment.nil?
    attributes[primary_key] = @auto_increment

    @auto_increment += 1
  end

  object = new(attributes)

  pkey = object.send(primary_key)

  if index.key?(pkey)
    raise DuplicateKeyError
  end

  index[pkey] = object
end

#keys ⇒ Object 



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# File 'lib/minimodel.rb', line 62

def keys
  all.map(&primary_key)
end

#load_from(path) ⇒ Object 



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# File 'lib/minimodel.rb', line 94

def load_from(path)
  YAML.load_file(path).each do |key, attrs|
    insert symbolize_keys(attrs, primary_key => key)
  end
end

#options(text_attribute) ⇒ Object 



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# File 'lib/minimodel.rb', line 66

def options(text_attribute)
  all.each_with_object({}) do |model, hash|
    hash[model.read_attribute(text_attribute)] = model.read_attribute(primary_key)
  end
end

#primary_key ⇒ Object 



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# File 'lib/minimodel.rb', line 52

def primary_key
  @primary_key
end