Change store_dir, move old files to new path

[RB]

I need to change the store_dir for my Carrierwave uploader.
Unfortunately this will break the paths of all existing files stored
in the old store_dir. What is the safest way to copy/move these old
images to the new store_dir path and update their filenames (the old
filenames are not unique)?

[RB]

Update - I wrote a rake task that treated the files in the old
location as remote files & uploaded them to the new location
(recreating all versions). Like this:

model.remote_image_url = old_image_url

[Marcel Fahle]

Hey, 

do you have a few more details on your solution? I think I have a similar problem, but can't figure it out.

Thanks a lot!!

Marcel

[Hans]

I have done that by a rake task that moved all files from one dir to the dir  defined in store dir, changed their names and stored the filename in the uploader column.
However the rake task should not define any uploader to be able to work as described above.

Den torsdagen den 13:e september 2012 kl. 04:11:48 UTC+2 skrev Bayarja:

 RB did you solve that? i wanna change stored director and rename stored files. how did you do it? carrierwave or rake task which one is better?

[Bayarja]

if is it possible please you can send me solved code. sorry my english skill

[Hans Marmolin]

Here it comes. 

This is the part with file handling that I call from a rake task that creates appropriate objects

=========================

def handle_my_document(document,kind,user,my_file,count=0) 

  file_name=my_file.URL

  forum=user.forum

  puts'>>>>>'+'Handling shared document file '+file_name.to_s+' for user '+user.nil_or.id.to_s

  filepath="#{Rails.root}/public/forum_shared_files/"

  if !forum.nil? then forum='Forum_'+forum.id.to_s else forum='Forum_???' end  

  new_filepath="/Users/hansmarmolin/Projekt/Forum/st_forum/public/uploads/document/file/#{forum}/#{document.id}/"

  source=filepath+file_name

  dest=new_filepath+file_name

  new_name=sanitize_my_document_name(my_file,new_filepath)

  if File.exists?(source)

    file_size=File.size(source)     

    FileUtils.mkdir_p(File.dirname(dest)) 

    FileUtils.cp source, dest 

    File.rename(new_filepath+file_name,new_filepath+new_name)

    count+=1

  else

    puts'**** '+'File '+source.to_s+' '+'does not exists'

  end

  return count, new_name, file_size

end

def sanitize_my_document_name(my_document,new_filepath)

  name=truncate(my_document.title,40).clean

  if name.blank? then name=truncate(my_document.URL, 40).clean end

  name=name.gsub(' ','_')

  name=name.gsub('"','')

  name=name.gsub(' - ','-').gsub(' -','-').gsub('- ','-') 

  name=name.gsub(/[^[:word:]\.\-\+]/,"_")

  if !my_document.URL.include?('.') then name+'_'+my_document.id.to_s+'.???' 

  else name=name+'.'+my_document.URL.split('.').last end

  name=name.gsub('__','_')

  name=name.gsub('_-_','-')       

  return name

end

def truncate(text, chars = 30)

    return if text.nil?

    return text if text.length<=chars 

    words=text.split(' ')

    for n in (1..words.size) 

      if words[0..n].join(' ').length>chars then break end

    end

     if words[0..n].join(' ').length-chars>chars-words[0..n-1].join(' ').length then n=n-1 end

     result=words[0..n].join(' ')

  end

===================

Here are the part of the rake task that calls the methods above

       puts'>>>>>'+'Creating my_document '+my_file.URL

        if my_file.Uploaded_by==0 then uploader=my_file.created_by else uploader=my_file.Uploaded_by end

        user=find_user(uploader)

        if user.nil? then next end

       document=Document.create

       filecount,new_name, file_size=handle_my_document(document,'user_document',user,my_file,filecount)     

       document.update_attributes(:title=>my_file.title,

                       :kind=>'user_document',

                       :file=>new_name,

                       :file_size=>file_size,

                       :forum_id=>user.forum.nil_or.id,:description=>my_file.Info,:show_for=>user.user_preference.show_documents,:old_document_id=>my_file.id,

                       :created_by_id=>user.nil_or.id,

                       :updated_by_id=>user.nil_or.id,

                       :created_at=>my_file.created,

                       :updated_at=>my_file.edited)                                 

     end

____________________________________________

Hans Marmolin

St: Larsgatan 50, 58224 Linköping, Sweden

Phone: +46708371202

14 sep 2012 kl. 07.08 skrev Bayarja:

if is it possible please you can send me solved code. sorry my english skill

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