Module: Sack::Database::Model::Data

Defined in:
lib/sack/database/model/data.rb

Overview

Data Module: Provides a simple data access layer through models.

Constant Summary collapse

VALIDATED_ACTIONS =

Actions requiring Validation

[
	:create,
    :update,
    :save
]

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object

Method Missing: Catches and routes model actions through database.



33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
 
# File 'lib/sack/database/model/data.rb', line 33

def method_missing name, *args

	# Check action allowed
	super name, *args unless ACTIONS.include? name

	# Acquire Database
	db = args.slice! 0

	# Check Validation Required
	if VALIDATED_ACTIONS.include? name

		# Acquire Entity
		data = args.last

		# Pre-load for updates
		data = data.clone.merge find(db, args.slice(0)) if name == :update

		# Validate
		errors = []
		raise Validation::ValidationException.new "Invalid Entity [#{data}] for Model #{@model}", errors unless is_valid? db, data, errors
	end

	# Forward to Database
	result = db.send name, table_name, *args

	# Inject Model Proxy into Entity/ies
	(result.is_a?(Array) ? result : [result]).each { |e| e.instance_variable_set('@model_mod', self); e.define_singleton_method(:method_missing) { |n, *a| @model_mod.send n, *a, self } } unless result.frozen?

	result
end