Class: Unimatrix::Resource

Inherits:
Object
  • Object
show all
Defined in:
lib/unimatrix/resource.rb

Direct Known Subclasses

DynamicResource, Error, Realm

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}, associations = {}) {|_self| ... } ⇒ Resource

Returns a new instance of Resource.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/unimatrix/resource.rb', line 80

def initialize( attributes={}, associations={} )

  self.nested_fields.each do | key, value |
    self.send( "#{ key }=", Struct.new( *value ).new )
  end

  self.type_name = self.class.name.split( '::' ).last.underscore rescue nil

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

  associations.each do | key, value |
    self.instance_variable_set( "@_#{ key }", value )
  end

  yield self if block_given?

end

Class Method Details

.field(name, options = {}) ⇒ Object 



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# File 'lib/unimatrix/resource.rb', line 29

def field( name, options = {} )
  if name.is_a?( Hash )
    nested_field_key = name.keys.first
    self.nested_fields[ nested_field_key ] = name[ nested_field_key ]
    name = nested_field_key
  end

  self.fields[ name.to_sym ] = options.merge( name: name )

  class_eval(
    "def #{ name }(); " +
    "@#{ name }.is_a?( FalseClass ) ? @#{ name } : (" +
       "@#{ name } || " +
         ( options[ :default ].nil? ?
            "nil" :
            ( options[ :default ].is_a?( String ) ?
                "'#{ options[ :default ] }'" :
                  "#{ options[ :default ] }" ) ) + ");" +
    "end;" +
    " " +
    "attr_writer :#{ name };",
    __FILE__,
    __LINE__
  )
end

.find_by_type_name(type_name) ⇒ Object 



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# File 'lib/unimatrix/resource.rb', line 16

def find_by_type_name( type_name )
  @descendants_by_type_name = begin
    result = {}
    descendants.each do | descendant |
      descendant_type_name = descendant.type_name
      result[ descendant_type_name ] = descendant \
        unless descendant_type_name.blank?
    end
    result
  end
  @descendants_by_type_name[ type_name ]
end

.has_many(name, options = {}) ⇒ Object 



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# File 'lib/unimatrix/resource.rb', line 62

def has_many( name, options = {} )
  define_method name do
    self.instance_variable_get( "@_#{ name }" ) ||
    options[ :default ] || []
  end
end

.has_one(name, options = {}) ⇒ Object 



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# File 'lib/unimatrix/resource.rb', line 55

def has_one( name, options = {} )
  define_method name do
    associations = self.instance_variable_get( "@_#{ name.to_s.pluralize }" )
    associations.present? ? associations.first : options[ :default ]
  end
end

.inherited(subclass) ⇒ Object 



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# File 'lib/unimatrix/resource.rb', line 7

def inherited( subclass )
  subclass.nested_fields = {}.merge( self.nested_fields )
  subclass.fields = {}.merge( self.fields )
end

.type_name ⇒ Object 



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# File 'lib/unimatrix/resource.rb', line 12

def type_name
  name.present? ? name.split( '::' ).last.underscore : nil
end