41 lines
1.5 KiB
Ruby
41 lines
1.5 KiB
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class CreateIssueAssigneesTable < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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INDEX_NAME = 'index_issue_assignees_on_issue_id_and_user_id'
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# Set this constant to true if this migration requires downtime.
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DOWNTIME = false
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# When a migration requires downtime you **must** uncomment the following
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# constant and define a short and easy to understand explanation as to why the
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# migration requires downtime.
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# DOWNTIME_REASON = ''
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# When using the methods "add_concurrent_index" or "add_column_with_default"
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# you must disable the use of transactions as these methods can not run in an
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# existing transaction. When using "add_concurrent_index" make sure that this
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# method is the _only_ method called in the migration, any other changes
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# should go in a separate migration. This ensures that upon failure _only_ the
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# index creation fails and can be retried or reverted easily.
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#
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# To disable transactions uncomment the following line and remove these
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# comments:
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# disable_ddl_transaction!
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def up
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create_table :issue_assignees do |t|
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t.references :user, foreign_key: { on_delete: :cascade }, index: true, null: false
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t.references :issue, foreign_key: { on_delete: :cascade }, null: false
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end
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add_index :issue_assignees, [:issue_id, :user_id], unique: true, name: INDEX_NAME
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end
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def down
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drop_table :issue_assignees
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end
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end
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