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How to Migrate from Paperclip to Rails ActiveStorage Discussion

14
General
Abhinay kumar Abhinay kumar
This should return the path to file in this format: /users/avatar/xxx/xx/original/filename
instance.send(attachment).path
Also, in my case i had to use something like:
file_path = k.send(value).path.split('/system', 2).second
because it exists locally and path had system as a prefix.
Joel Schneider Joel Schneider
For Digital Ocean Spaces, could you check the ETag of an object for the checksum rather than downloading the entire thing? Their docs say the ETag is "an MD5 hash of the object".
Nick Noble Nick Noble

When I run the migration (with the provided code) I get:

ArgumentError: wrong number of arguments (given 1, expected 2..3)

/Users/nicknoble/products/Lnky/db/migrate/20180531013954_convert_to_active_storage.rb:14:in prepare'

/Users/nicknoble/products/Lnky/db/migrate/20180531013954_convert_to_active_storage.rb:14:inup'

Juan Manuel Ramallo Juan Manuel Ramallo
Same here! :/
Maurício Júnior Maurício Júnior

Same here :(

Per Lilja Per Lilja

I fixed this by changing to:

active_storage_blob_statement = ActiveRecord::Base.connection.raw_connection.prepare(<<-SQL)
      INSERT INTO active_storage_blobs (
        `key`, filename, content_type, metadata, byte_size, checksum, created_at
      ) VALUES (?, ?, ?, '{}', ?, ?, ?)
    SQL

    active_storage_attachment_statement = ActiveRecord::Base.connection.raw_connection.prepare(<<-SQL)
      INSERT INTO active_storage_attachments (
        name, record_type, record_id, blob_id, created_at
      ) VALUES (?, ?, ?, #{get_blob_id}, ?)
    SQL
Cristian Georgescu Cristian Georgescu
When running migration:

ArgumentError: You tried to define an enum named "industry" on the model "Company", but this will generate a instance method "horeca?", which is already defined by another enum.  


Juan Manuel Ramallo Juan Manuel Ramallo
I think this is because of the first line, when we require all the models. I just commented that line out and worked without that kind of error.
Nick Noble Nick Noble
When can we actually remove paperclip?
Chris Seelus Chris Seelus

No (offical) way to use validations (https://github.com/thoughtbot/paperclip#validations) for Active Storage yet. Mayor bummer …

Tabish Iqbal Tabish Iqbal

Heres a fix for it: https://github.com/igorkasyanchuk/active_storage_validations

Colleen Schnettler Colleen Schnettler

Instead of building the URL in the def key method, can't I use the same thing I used in checksum?
url = attachment.url
I'm attempting to modify this migration to transition from Shrine to Active Storage.

Colleen Schnettler Colleen Schnettler

get_blob_id = LASTVAL() was returning the id from the attachments table, NOT the blob_id. I had to change it to get_blob_id = "(SELECT max(id) from active_storage_blobs)". Any thoughts on this?

Francisco Quinones Francisco Quinones

Quick question before starting this process. How can you approach this for multi tenant app with apartment gem? Has you use different DBs for the tables. Thank in advance.

Matthias Orgler Matthias Orgler

This looks horribly complex. Couldn't we just do a model.attach(old_file_from_paperclip) and have it take care of all the pitfalls?

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