1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
# frozen_string_literal: true
module ActiveModel
module Validations
# == Active \Model \Validation \Callbacks
#
# Provides an interface for any class to have +before_validation+ and
# +after_validation+ callbacks.
#
# First, include ActiveModel::Validations::Callbacks from the class you are
# creating:
#
# class MyModel
# include ActiveModel::Validations::Callbacks
#
# before_validation :do_stuff_before_validation
# after_validation :do_stuff_after_validation
# end
#
# Like other <tt>before_*</tt> callbacks if +before_validation+ throws
# +:abort+ then <tt>valid?</tt> will not be called.
module Callbacks
extend ActiveSupport::Concern
included do
include ActiveSupport::Callbacks
define_callbacks :validation,
skip_after_callbacks_if_terminated: true,
scope: [:kind, :name]
end
module ClassMethods
# Defines a callback that will get called right before validation.
#
# class Person
# include ActiveModel::Validations
# include ActiveModel::Validations::Callbacks
#
# attr_accessor :name
#
# validates_length_of :name, maximum: 6
#
# before_validation :remove_whitespaces
#
# private
#
# def remove_whitespaces
# name.strip!
# end
# end
#
# person = Person.new
# person.name = ' bob '
# person.valid? # => true
# person.name # => "bob"
def before_validation(*args, &block)
options = args.extract_options!
if options.key?(:on)
options = options.dup
options[:on] = Array(options[:on])
options[:if] = Array(options[:if])
options[:if].unshift ->(o) {
!(options[:on] & Array(o.validation_context)).empty?
}
end
set_callback(:validation, :before, *args, options, &block)
end
# Defines a callback that will get called right after validation.
#
# class Person
# include ActiveModel::Validations
# include ActiveModel::Validations::Callbacks
#
# attr_accessor :name, :status
#
# validates_presence_of :name
#
# after_validation :set_status
#
# private
#
# def set_status
# self.status = errors.empty?
# end
# end
#
# person = Person.new
# person.name = ''
# person.valid? # => false
# person.status # => false
# person.name = 'bob'
# person.valid? # => true
# person.status # => true
def after_validation(*args, &block)
options = args.extract_options!
options = options.dup
options[:prepend] = true
if options.key?(:on)
options[:on] = Array(options[:on])
options[:if] = Array(options[:if])
options[:if].unshift ->(o) {
!(options[:on] & Array(o.validation_context)).empty?
}
end
set_callback(:validation, :after, *args, options, &block)
end
end
private
# Overwrite run validations to include callbacks.
def run_validations!
_run_validation_callbacks { super }
end
end
end
end
|
