Module: ConfigStore::TypedAttrAccessor

Included in:
Model
Defined in:
lib/configstore/models/typed_attr_accessor.rb

Constant Summary collapse

TYPE_STRING = 
:string
TYPE_DATE_TIME = 
:date_time
TYPE_BOOLEAN = 
:boolean
TYPE_INTEGER = 
:integer
TYPE_HASH = 
:hash
TYPE_BASE64 = 
:base64

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.allowed_types(type_alias) ⇒ Object 



25
26
27
28
29
30
 
# File 'lib/configstore/models/typed_attr_accessor.rb', line 25

def self.allowed_types(type_alias)
	allowed_types = []
	allowed_types += [NilClass]
	allowed_types += type_alias_to_type_array(type_alias)
	return allowed_types
end

.type_alias_to_type_array(type_alias) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/configstore/models/typed_attr_accessor.rb', line 32

def self.type_alias_to_type_array(type_alias)
	case type_alias
	when TYPE_STRING
		return [String]
	when TYPE_BASE64
		return [String]
	when TYPE_DATE_TIME
		return [DateTime]
	when TYPE_BOOLEAN
		return [TrueClass, FalseClass]
	when TYPE_INTEGER
		return [Integer]
	when TYPE_HASH
		return [Hash]
	end
end

.type_checks(type_alias, value) ⇒ Object

Raises:

  • (ArgumentError) 


49
50
51
52
 
# File 'lib/configstore/models/typed_attr_accessor.rb', line 49

def self.type_checks(type_alias, value)
	allowed_types = self.allowed_types(type_alias)
	raise ArgumentError.new("Invalid Type (allowed #{ allowed_types.inspect })") unless allowed_types.any? { |type| value.is_a?(type) }
end

.type_specific_checks(type_alias, value) ⇒ Object 



54
55
56
57
58
59
 
# File 'lib/configstore/models/typed_attr_accessor.rb', line 54

def self.type_specific_checks(type_alias, value)
	case type_alias
	when TYPE_BASE64
		Base64.strict_decode64(value) if value # raises ArgumentError (invalid base64) if value is not a Base64 string
	end
end

Instance Method Details

#typed_attr_accessor(name, type_alias) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/configstore/models/typed_attr_accessor.rb', line 13

def typed_attr_accessor(name, type_alias)
	define_method(name) do
		instance_variable_get("@#{name}")
	end

	define_method("#{name}=") do |value|
		TypedAttrAccessor.type_checks(type_alias, value)
		TypedAttrAccessor.type_specific_checks(type_alias, value)
		instance_variable_set("@#{name}", value)
	end
end