Rails 5.2.0 (как API)
/ config / application.rb
config.active_storage.variant_processor =: vips
Проблема:
/ сериализаторы / api / v1 / user / current_user_serializer.rb
class Api::V1::User::CurrentUserSerializer < Api::V1::User::BaseSerializer
include Rails.application.routes.url_helpers
attributes(
[...]
:avatar
:created_at
)
def avatar
if object.avatar.attachment
avatar = {
image: url_for( object.avatar ), # This one works
thumb: url_for( object.avatar.variant(resize_to_fit: [800, 800]) ), # EXCEPTION
thumb_test: url_for( object.avatar.variant(resize: '800x800') ) # Returns image of size: 640x800 (expected 800x800)
}
end
end
end
Я получаю следующее исключение:
exception: "<MiniMagick::Error: `mogrify -resize-to-fit [800, 800] /tmp/mini_magick20180625-19749-rghjbg.jpg` failed with error: mogrify.im6: unrecognized option `-resize-to-fit' @ error/mogrify.c/MogrifyImageCommand/5519. >"
РЕДАКТИРОВАТЬ
Спасибо @ Джордж Кагхорн
Теперь я создал свой собственный вариант на основе этого сообщения: https://prograils.com/posts/rails-5-2-active-storage-new-approach-to-file-uploads
lib / active_storage_variants.rb
class ActiveStorageVariants
class << self
def resize_to_fill(width:, height:, blob:, gravity: 'Center')
blob.analyze unless blob.analyzed?
cols = blob.metadata[:width].to_f
rows = blob.metadata[:height].to_f
if width != cols || height != rows
scale_x = width / cols
scale_y = height / rows
if scale_x >= scale_y
cols = (scale_x * (cols + 0.5)).round
resize = cols.to_s
else
rows = (scale_y * (rows + 0.5)).round
resize = "x#{rows}"
end
end
{
resize: resize,
gravity: gravity,
background: 'rgba(255,255,255,0.0)',
extent: cols != width || rows != height ? "#{width}x#{height}" : ''
}.merge(optimize_hash(blob))
end
end
end
/ модели / проблемы / пользователи / active_storage_variants.rb
require 'active_storage_variants' # /lib/active_storage_variants.rb
module Users::ActiveStorageVariants
def avatar_thumbnail
variation = ActiveStorage::Variation.new(
ActiveStorageVariants.resize_to_fill(
width: 300, height: 300, blob: avatar.blob
)
)
ActiveStorage::Variant.new(avatar.blob, variation)
end
end
/models / user.rb
class User < ApplicationRecord
...
## Concerns
include Users::ActiveStorageVariants
...
end
Чтобы позвонить по этому номеру:
user.avatar_thumbnail