mastodon/db/migrate/20180929222014_create_accou...

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class CreateAccountConversations < ActiveRecord::Migration[5.2]
def change
create_table :account_conversations do |t|
t.belongs_to :account, foreign_key: { on_delete: :cascade }
t.belongs_to :conversation, foreign_key: { on_delete: :cascade }
t.bigint :participant_account_ids, array: true, null: false, default: []
t.bigint :status_ids, array: true, null: false, default: []
t.bigint :last_status_id, null: true, default: nil
t.integer :lock_version, null: false, default: 0
end
add_index :account_conversations, [:account_id, :conversation_id, :participant_account_ids], unique: true, name: 'index_unique_conversations'
end
end