Class: Croesus::Attributes

Inherits:
Object show all
Defined in:
lib/croesus/attributes.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}) ⇒ Attributes

Returns a new instance of Attributes.

Parameters:

  • params (Hash) —

    the parameters you wish to initialize the model with. If the model does not have an accessor set, it will ignore the attribute passed.



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# File 'lib/croesus/attributes.rb', line 25

def initialize(attributes = {})
  self.attributes = attributes
end

Class Method Details

.attr_accessor(*args) ⇒ Object 



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# File 'lib/croesus/attributes.rb', line 57

def self.attr_accessor(*args)
  args.each { |name| self.attributes[name] = Attribute.new(Object) }
  super
end

.attribute(name, type = String, options = {}) ⇒ Object

Declares an attribute on the model

Parameters:

  • name (String)
  • type (Class) (defaults to: String) —

    a class that represents the type

  • options (Hash) (defaults to: {}) —

    extra options to apply to the attribute



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# File 'lib/croesus/attributes.rb', line 67

def self.attribute(name, type=String, options={})
  config = { writer: true, reader: true }.merge(options)

  attr = Attribute.new(type, options)
  self.attributes[name] = attr
  variable = "@#{name}"

  if config[:writer]
    define_method("#{name}=") do |object|
      val = Croesus.coercer.coerce(object, attr.type)
      instance_variable_set(variable, val)
    end
  end

  if config[:reader]
    define_method(name) do
      val = instance_variable_get(variable)
      unless val
        val = attr.default
        instance_variable_set(variable, val)
      end
      val
    end
  end
end

.attributes ⇒ Object 



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# File 'lib/croesus/attributes.rb', line 52

def self.attributes
  @attributes ||= {}
end

Instance Method Details

#attributes ⇒ Hash

Get and ser the attributes on the model.

Returns:



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# File 'lib/croesus/attributes.rb', line 40

def attributes
  hash = {}
  self.class.attributes.keys.each do |k|
    hash[k] = send(k) if respond_to?(k)
  end
  hash
end

#attributes=(attributes = {}) ⇒ Object

Sets the attributes on the model

Parameters:

  • attributes (Hash) (defaults to: {}) 


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# File 'lib/croesus/attributes.rb', line 31

def attributes=(attributes = {})
  attributes.each do |attr, value|
    self.send("#{attr}=", value) if self.respond_to?("#{attr}=")
  end
end

#to_h ⇒ Object 



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# File 'lib/croesus/attributes.rb', line 48

def to_h
  self.attributes
end