Carrierwave wrong image_url after save

Question

I am using Carrierwave to upload an image from a remote url :

 def save

      uid = SecureRandom.uuid

      storedir = "uploads/#{uid}"

      image = Image.new

      image.image.store_dir = storedir

      image.remote_image_url = "a remote url here"

      if image.save!

          respond_to do |format|

              format.js

              format.json { render json: {:saved => "#{image.image_url}", :id => "#{image.id}"} }
          end

      end

  end

the returned result is correct :

 Object { saved="https://mybucket.s3-eu-west-1.amazonaws.com/uploads/58406672-c227-4cec-a846-04c443e70f33/thumb_yr169-ae2f3bc4-74f4-47ee-950c-2e06756525b9-v2.png",  id="47"}

As you can see the image url is this :

https://mybucket.s3-eu-west-1.amazonaws.com/uploads/58406672-c227-4cec-a846-04c443e70f33/thumb_yr169-ae2f3bc4-74f4-47ee-950c-2e06756525b9-v2.png

and when I go to check the file, it's there in the right folder, but when I go to the Rails Console and look for that record, the result of image_url is wrong :

> Rails console
> Image.find(47).image_url
> https://mybucket.s3-eu-west-1.amazonaws.com/uploads/thumb_yr169-ae2f3bc4-74f4-47ee-950c-2e06756525b9-v2.png

The uid after /uploads/ is gone!!

any help please!!

UPDATE

Looks like carrierwave is go check store_dir in the uploader to show the image url, in my case I override it before saving the image, and I would like to use that custom store_dir

oreoluwa oreoluwa · Accepted Answer · 2016-07-03T23:59:15

Yeah, that is because CarrierWave, like most similar libraries try to build your url dynamically.

Add this to your ImageUploader

#ImageUploader
def uid
  '58406672-c227-4cec-a846-04c443e70f33'
end

def store_dir
  "uploads/#{uid}"
end

#XController
def save
  image = Image.new
  image.remote_image_url = "a remote url here"
  if image.save!
    respond_to do |format|
      format.js
      format.json { render json: {:saved => "#{image.image_url}", :id => "#{image.id}"} }
    end
  end
end

UPDATE

Not totally sure of why you'd want to overide the store, but in order to do that, I think you may be better served by storing the additional details on the images table as such:

Add a column to your Image model, which may be the store_uid
In your ImageUploader, change your store_dir to use your builder or the field name, e.g if the column on Image is store_uid, with value: whatever-uid-has-been-stored-here, you could do:

def store_dir # /uploads/whatever-uid-has-been-stored-here "uploads/#{model.store_uid}" end

A cleaner approach and one that's often advised is to create another uploader for each kind of images, for consistency within your application

Carrierwave wrong image_url after save

1 Answers