Heroku如何使用file.open和rake填充图像载波

Question

  rake db:populate (works)
  heroku run rake db:populate (works to some extent)

I ran into a problem when I tried to populate the database on heroku. Locally the following works perfectly and my website is populated with images.

  namespace :db do
     desc "Fill database with sample data"
     task populate: :environment do
     .
     .
     @uploader = ImageUploader.new(@movie_project, :image)
     @uploader.store!(File.open("app/assets/images/photos/picture.jpg"))
     @movie_project.image = @uploader

All MovieProjects are successfully populated with data(title, genre etc). Its only the image that doesn't get created on heroku. I suspect that this have something to do with the

  File.open

Tried things like changing directory but without success, maybe I just use the wrong directory

  app/assets/images => public/assets/ ?

I use cedar stack, rails 3.2, Carrierwave and the assets are precompiled before uploaded. This is just for testing purpose to test with different layouts. Creating a MovieProject and assign a picture works on Heroku, but using the above methods doesn't seems to.

//

Thanks Jon

Answer 1

Ran into the same problems tonight, and fixed it the following way:

Firstly, make sure you have something like this in your uploader or initializer:

config.cache_dir = "#{Rails.root}/tmp/uploads"

Now, use carrierwave's cache! method, instead of store! . I also call save! afterwards

 @uploader.cache!(File.open("app/assets/images/photos/picture.jpg"))
 @movie_project.image=@uploader
 @movie_project.save!

Hope this helps, let me know if it doesn't