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I try to add Shrine gem to an existing project that uses Paperclip. I added a Shrine image to a new model (just for a check). So I created model Country with this db table:

  create_table "countries", force: :cascade do |t|
    t.string "name"
    t.text "image_data"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

and this model:

class Country < ApplicationRecord
  include ImageUploader::Attachment(:image)

  validates :name, length: { in: 2..180 }, presence: true
end

After that I tried to get image from country and received this (image_data works, though):

enter image description here

I thought that maybe it's because image is empty, but in another app with shrine everything works correctly

enter image description here

Does anyone know how to fix this?

taneko
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  • Did you add image_uploader.rb file in lib folder? – glinda93 Jul 10 '20 at 16:33
  • @bravemaster I followed shrine setup guide and added image_uploader.rb in app/uploaders folder. File image_uploader.rb contains no uploading logic, but the previous time I did this in another app everything worked. – taneko Jul 13 '20 at 09:40
  • How about restarting your app? – glinda93 Jul 13 '20 at 10:25

2 Answers2

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It seems that somehow shrine uploader was loaded before shrine.rb file so that I couldn't use any shrine methods. Similar issue can be found here: https://github.com/shrinerb/shrine/issues/155

Adding require_relative '../../config/initializers/shrine' to the uploader resolved the issue

taneko
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I got the error in shrine version 3.2.1 and fixed it by adding Shrine.plugin :activerecord in shrine.rb. hope it can help.

https://shrinerb.com/docs/plugins/activerecord

adhiguna sabril
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