27 lines
600 B
Ruby
27 lines
600 B
Ruby
class TalkPreference < ActiveRecord::Base
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self.primary_key = :unique_id
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has_many :selected_talks
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serialize :talks, type: Array
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end
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class SelectedTalk < ApplicationRecord
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belongs_to :talk_preference
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end
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class RemoveTalksFromTalkPreferences < ActiveRecord::Migration[5.0]
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def up
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remove_column :talk_preferences, :talks, :text
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end
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def down
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add_column :talk_preferences, :talks, :text
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talk_preferences = TalkPreference.all
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talk_preferences.each do |preference|
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preference.talks = preference.selected_talks.pluck(:talk_id)
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preference.save!
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end
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end
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end
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