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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
# File 'app/models/better_record/model_concerns/has_validated_avatar.rb', line 13
def has_validated_avatar(
avatar_name: :avatar,
image_validator: :valid_image,
min_image_size: nil,
max_image_size: 500.kilobytes,
shrink_large_image: false,
shrink_wait_time: 1.minute,
**opts
)
attribute :"shrinking_#{avatar_name}", :boolean, default: false
has_one_attached :"last_#{avatar_name}"
has_one_attached avatar_name
validate avatar_name, :"check_#{image_validator}"
after_commit :"check_#{image_validator}", if: :"#{avatar_name}_attached?", on: %i[ create update ]
define_method :"#{avatar_name}_attached?" do
__send__(avatar_name).attached?
end
define_method :"#{avatar_name}_validation_ran?" do |rld=false|
!!__send__(:"#{avatar_name}_validation_record", !!rld)&.ran
end
define_method :"attach_#{avatar_name}" do |*args, **options|
__send__(avatar_name).attach(*args, **options)
__send__ image_validator
end
define_method :"create_#{avatar_name}_validation" do |ran=false|
BetterRecord::AttachmentValidation.delete_invalid
begin
opts = { name: image_validator, attachment_id: reloaded_record&.__send__(avatar_name)&.attachment&.id, ran: ran }
AttachmentValidation.create!(opts) if opts[:attachment_id]
rescue
if ran && $!.is_a?(PG::UniqueViolation) && !__send__(:"#{avatar_name}_validation_record").ran
__send__(:"#{avatar_name}_validation_record").update(ran: true)
end
end
__send__(:"#{avatar_name}_validation_record")
end
define_method :"#{avatar_name}_validation_record" do |rld=false|
(!rld && instance_variable_get(:"@#{avatar_name}_record")) ||
instance_variable_set(
:"@#{avatar_name}_record",
AttachmentValidation.find_by(attachment_id: __send__(avatar_name).id, name: image_validator)
)
end
define_method :valid_image_format do
unless __send__(avatar_name).blob.content_type.start_with? 'image/'
errors.add(avatar_name, 'is not an image file')
return false
end
true
end
define_method :valid_image_size do
if max_image_size && __send__(avatar_name).blob.byte_size > max_image_size
if shrink_large_image.present?
puts "\nSHRINKING\n"
self.__send__ :"shrinking_#{avatar_name}=", true
(
shrink_wait_time ?
ResizeBlobImageJob.set(wait: shrink_wait_time) :
ResizeBlobImageJob
).perform_later(
model: self.class.to_s,
query: {id: self.id},
attachment: avatar_name.to_s,
options: shrink_large_image
)
true
else
errors.add(avatar_name, "is too large, maximum #{ActiveSupport::NumberHelper.number_to_human_size(max_image_size)}")
return false
end
elsif min_image_size && __send__(avatar_name).blob.byte_size < min_image_size
errors.add(avatar_name, "is too small, minimum #{ActiveSupport::NumberHelper.number_to_human_size(min_image_size)}")
return false
end
true
end
define_method :valid_image do
return true unless __send__(avatar_name).attached?
__send__(:"create_#{avatar_name}_validation", true)
raise "Uh Oh" unless __send__(:"#{avatar_name}_validation_ran?", true)
if valid_image_format && valid_image_size
self.__send__(:"shrinking_#{avatar_name}") ||
__send__(:"cache_current_#{avatar_name}")
true
else
__send__(:"load_last_#{avatar_name}")
false
end
end
define_method :"check_#{image_validator}" do |*args|
return true if self.id.blank? || !reloaded_record&.__send__(avatar_name).attached?
__send__(image_validator) unless __send__(:"#{avatar_name}_validation_ran?", true)
end
define_method :"cache_current_#{avatar_name}" do
__send__ :"copy_#{avatar_name}"
end
define_method :"load_last_#{avatar_name}" do
__send__ :"copy_#{avatar_name}", :"last_#{avatar_name}", avatar_name
__send__(:"create_#{avatar_name}_validation", true)
end
define_method :"copy_#{avatar_name}" do |from = avatar_name, to = :"last_#{avatar_name}"|
puts "COPYING #{from} TO #{to}"
from_attachment = __send__ from
to_attachment = __send__ to
if from_attachment.attached?
return true if from_attachment.attachment&.blob_id == to_attachment.attachment&.blob_id
delete_attachment to
to_attachment.attach from_attachment.blob
else
delete_attachment to
end
end
define_method :delete_attachment do |att_name = avatar_name, now = false|
begin
atchd = __send__ att_name
if atchd.attachment
atchd_blob = atchd.blob
atchd.detach
atchd_blob&.__send__ now ? :purge : :purge_later
end
rescue Exception
end
end
define_method :reloaded_record do
self.class.find_by(id: self.id)
end
end
|