Delete files with file-column?

rubyonrails-talk
1

Star Burger wrote:

In the web app I'm currently working on users can upload multiple images - and can also delete them later on.

Is there a way to easily delete uploaded files in file-column? The deletion should affect the database and the file structure of course.

I didn't find any documentation for that...

I find the easiest way to do that is to have a main record that has_one or has_many images. Each image has an ID, parent_id and file_column field. Then, all you need to do is destroy any image record. I believe that takes care of the rest :slight_smile:

Cheers Mohit.

2

you can use AR's before_destroy Callback to write a function that reads the filenname/path from the column and deletes the files from the Disk ...

class Entry < ActiveRecord::Base   has_and_belongs_to_many :products   file_column :image, :magick => {             :versions => { "thumb" => "100x100", "medium" => "640x480" }             }   before_destroy :delete_img_file

protected def delete_img_file ....some code to delete the image here ... .... self.file_column should give you the filename/path (however thats stored in there, dont know the plugin you used).... end

end

3

Star Burger wrote:

Thorsten L wrote:   

you can use AR's before_destroy Callback to write a function that reads the filenname/path from the column and deletes the files from the Disk ...

class Entry < ActiveRecord::Base   has_and_belongs_to_many :products   file_column :image, :magick => {             :versions => { "thumb" => "100x100", "medium" => "640x480" }             }   before_destroy :delete_img_file

protected def delete_img_file ....some code to delete the image here ... .... self.file_column should give you the filename/path (however thats stored in there, dont know the plugin you used).... end

end      The reason why file column didn't delete the files automatically when I deleted an entry was because I used entry.delete instead of entry.destroy. The latter one kills all uploaded files also...

Thanks for your help.

I should have bolded the word *destroy* in my reply :slight_smile:

Cheers Mohit.