我目前正在進行 Rails 6.1 升級，想知道是否有辦法將新service_name列設定為ignore。我知道如何使用 ActiveRecord 表執行此操作，但不知道如何使用 Rails 的內部表（不知道如何稱呼它）。
撇開上面的細節不談，如何設定active_storage_blobs表中的一列被忽略？
uj5u.com熱心網友回復：
# app/initializers/active_storage_service_name_backport.rb
if Gem::Version.new(Rails.version) >= Gem::Version.new("6.1")
raise "This monkey patch is only needed before Rails 6.1. Your version is #{Rails.version}. Please delete #{__FILE__}."
end
ActiveStorage::Blob.tap do |klass|
klass.ignored_columns = klass.ignored_columns.dup.push(:service_name)
end
uj5u.com熱心網友回復：
# app/initializers/active_storage_ignore_service_name_backport.rb
module ActiveStorageIgnoreServiceNameBackport
extend ActiveSupport::Concern
included do
ignored_columns = [:service_name]
end
end
Rails.configuration.to_prepare do
ActiveStorage::Blob.include(ActiveStorageIgnoreServiceNameBackport)
end
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