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# 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|
begin
AttachmentValidation.create!(name: image_validator, attachment_id: __send__(avatar_name).id, ran: ran)
rescue
__send__(:"#{avatar_name}_validation_record").update(ran: true) if $!.is_a?(PG::UniqueViolation) && ran && !__send__(:"#{avatar_name}_validation_record").ran
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)
if valid_image_format && valid_image_size
self.__send__(:"shrinking_#{avatar_name}") ||
reloaded_record.__send__(:"cache_current_#{avatar_name}")
else
r = reloaded_record.__send__(avatar_name)
begin
r.purge_later if r.attached?
rescue Exception
end
__send__(:"load_last_#{avatar_name}") if __send__(:"last_#{avatar_name}").attached?
false
end
end
define_method :"check_#{image_validator}" do |*args|
return true unless __send__(avatar_name).attached?
__send__(image_validator) unless __send__(:"#{avatar_name}_validation_ran?", true)
end
define_method :"cache_current_#{avatar_name}" do
reloaded_record.__send__ :"copy_#{avatar_name}"
end
define_method :"load_last_#{avatar_name}" do
reloaded_record.__send__ :"copy_#{avatar_name}", :"last_#{avatar_name}", avatar_name
end
define_method :"copy_#{avatar_name}" do |from = avatar_name, to = :"last_#{avatar_name}"|
puts "COPYING #{from} TO #{to}"
from_attachment = __send__ from
delete_attachment to
if from_attachment.attached?
tmp = Tempfile.new
tmp.binmode
tmp.write(from_attachment.download)
tmp.flush
tmp.rewind
r = reloaded_record
from_attachment = r.__send__ from
to_attachment = r.__send__ to
to_attachment.attach(
ActionDispatch::Http::UploadedFile.new(
tempfile: tmp,
filename: from_attachment.filename.to_s,
type: from_attachment.content_type
)
)
tmp.close
end
true
end
define_method :delete_attachment do |att_name = avatar_name, now = false|
atchd = __send__ att_name
if atchd.attached?
begin
atch = ActiveStorage::Attachment.find_by(atchd.id)
atch&.__send__ now ? :purge : :purge_later
rescue Exception
begin
ActiveStorage::Attachment.find_by(atchd.id).destroy
rescue Exception
end
end
end
end
define_method :reloaded_record do
self.class.find_by(id: self.id)
end
end
|