51 lines
1.2 KiB
Ruby
51 lines
1.2 KiB
Ruby
class CreateMessageRecipients < ActiveRecord::Migration[4.2]
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class Message < ActiveRecord::Base
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has_many :message_recipients
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end
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class MessageRecipient < ActiveRecord::Base
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end
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def up
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create_table :message_recipients do |t|
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t.references :message, index: true, null: false
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t.references :user, null: false
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t.integer :email_state, default: 0, null: false
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t.datetime :read_at
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end
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add_index :message_recipients, [:user_id, :read_at]
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Message.all.each do |m|
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recipients = YAML.load(m.recipients_ids).map do |r|
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{
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message_id: m.id,
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user_id: r,
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email_state: m.email_state
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}
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end
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MessageRecipient.create! recipients
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end
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change_table :messages do |t|
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t.remove :recipients_ids
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t.remove :email_state
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end
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end
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def down
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change_table :messages do |t|
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t.text :recipients_ids
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t.integer :email_state, default: 0, null: false
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end
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messages = Message.all.includes(:message_recipients).map do |m|
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recipients = m.message_recipients.map(&:user_id)
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m.recipients_ids = recipients.to_yaml
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m.email_state = m.email_state
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m.save!
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end
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drop_table :message_recipients
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end
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end
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