我将Rails 5升级到6.1后,ActiveStorage会抛出一个错误:
unknown attribute 'service_name' for ActiveStorage::Blob
.
为什么会这样,我该如何修复?
我将Rails 5升级到6.1后,ActiveStorage会抛出一个错误:
unknown attribute 'service_name' for ActiveStorage::Blob
.
为什么会这样,我该如何修复?
这些命令对我来说有效。
rails active_storage:update
rails db:migrate
gem 'rails', '~> 6.0.2'
错误的Gemfile:
gem 'rails', github: 'rails/rails', branch: 'master'
如果您已经在使用active_storage并希望将rails版本更新为6.1.0alpha,您需要运行以下命令:
rails active_storage:update
# This migration comes from active_storage (originally 20190112182829)
class AddServiceNameToActiveStorageBlobs < ActiveRecord::Migration[6.0]
def up
unless column_exists?(:active_storage_blobs, :service_name)
add_column :active_storage_blobs, :service_name, :string
if configured_service = ActiveStorage::Blob.service.name
ActiveStorage::Blob.unscoped.update_all(service_name: configured_service)
end
change_column :active_storage_blobs, :service_name, :string, null: false
end
end
end
迁移2:
# This migration comes from active_storage (originally 20191206030411)
class CreateActiveStorageVariantRecords < ActiveRecord::Migration[6.0]
def up
create_table :active_storage_variant_records do |t|
t.belongs_to :blob, null: false, index: false
t.string :variation_digest, null: false
t.index %i[ blob_id variation_digest ], name: "index_active_storage_variant_records_uniqueness", unique: true
t.foreign_key :active_storage_blobs, column: :blob_id
end
end
end
然后你只需要运行
rails db:migrate
它能够正常工作。
步骤1:
rm 20191021084642_create_active_storage_tables.active_storage.rb
步骤2:
rails active_storage:install
步骤三:
rails db:migrate