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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
12 lines
528 B
Ruby
12 lines
528 B
Ruby
# frozen_string_literal: true
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class AddLastVersionAtToPosts < ActiveRecord::Migration[4.2]
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def change
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add_column :posts, :last_version_at, :timestamp
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execute "UPDATE posts SET last_version_at = COALESCE((SELECT max(created_at)
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FROM versions WHERE versions.versioned_id = posts.id
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AND versions.versioned_type = 'Post'), posts.created_at)"
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change_column :posts, :last_version_at, :timestamp, null: false
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end
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end
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