41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
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class AddManyProjectsToAdvisories < ActiveRecord::Migration
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def up
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create_table :advisories_projects, :id => false do |t|
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t.integer :advisory_id
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t.integer :project_id
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end
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add_index :advisories_projects, :advisory_id
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add_index :advisories_projects, :project_id
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add_index :advisories_projects, [:advisory_id, :project_id], :name => :advisory_project_index, :unique => true
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Advisory.find_in_batches do |b|
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b.each do |advisory|
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advisory.projects << Project.find(advisory.project_id)
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advisory.save
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end
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end
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change_table :advisories do |t|
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t.remove :project_id
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end
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end
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def down
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change_table :advisories do |t|
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t.integer :project_id
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end
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Advisory.find_in_batches do |b|
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b.each do |advisory|
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advisory.project_id = advisory.projects.first.id
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advisory.save
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end
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end
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remove_index :advisories_projects, :column => :advisory_id
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remove_index :advisories_projects, :column => :project_id
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remove_index :advisories_projects, :name => :advisory_project_index
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drop_table :advisories_projects
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end
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end
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