27 lines
679 B
Ruby
27 lines
679 B
Ruby
class CreateQuizSubmissionEvents < ActiveRecord::Migration
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tag :predeploy
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def up
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create_table :quiz_submission_events do |t|
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t.integer :attempt
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t.string :event_type
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t.integer :quiz_submission_id, limit: 8, null: false
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t.text :answers
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t.datetime :created_at
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end
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# for sorting:
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add_index :quiz_submission_events, :created_at
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# for locating predecessor events:
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add_index :quiz_submission_events, [ :quiz_submission_id, :attempt, :created_at ],
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name: 'event_predecessor_locator_index'
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add_foreign_key :quiz_submission_events, :quiz_submissions
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end
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def down
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drop_table :quiz_submission_events
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end
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end
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