scinote-web/db/migrate/20160407063323_create_protocols.rb

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class CreateProtocols < ActiveRecord::Migration[4.2]
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def up
# First, create protocol table
create_table :protocols do |t|
t.string :name
t.text :authors
t.text :description
t.integer :added_by_id
t.integer :my_module_id
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t.integer :team_id, null: false
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t.integer :protocol_type, null: false, default: 0
t.integer :parent_id
t.datetime :parent_updated_at
t.integer :archived_by_id
t.datetime :archived_on
t.integer :restored_by_id
t.datetime :restored_on
t.timestamps null: false
end
add_foreign_key :protocols, :users, column: :added_by_id
add_foreign_key :protocols, :my_modules, column: :my_module_id
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add_foreign_key :protocols, :teams, column: :team_id
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add_foreign_key :protocols, :protocols, column: :parent_id
add_foreign_key :protocols, :users, column: :archived_by_id
add_foreign_key :protocols, :users, column: :restored_by_id
add_index :protocols, :name
add_index :protocols, :authors
add_index :protocols, :description
add_index :protocols, :added_by_id
add_index :protocols, :my_module_id
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add_index :protocols, :team_id
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add_index :protocols, :parent_id
add_index :protocols, :archived_by_id
add_index :protocols, :restored_by_id
# Also create keywords, this will be unused at the start
create_table :protocol_keywords do |t|
t.string :name
t.timestamps null: false
end
add_index :protocol_keywords, :name
# .. and the many-to-many association
create_table :protocol_protocol_keywords do |t|
t.integer :protocol_id, null: false
t.integer :protocol_keyword_id, null: false
end
add_foreign_key :protocol_protocol_keywords, :protocols
add_foreign_key :protocol_protocol_keywords, :protocol_keywords
add_index :protocol_protocol_keywords, :protocol_id
add_index :protocol_protocol_keywords, :protocol_keyword_id
# Alright: now, the "real" data migration needs to happen
add_column :steps, :protocol_id, :integer
add_foreign_key :steps, :protocols, column: :protocol_id
add_index :steps, :protocol_id
MyModule.find_each do |my_module|
protocol = Protocol.new(
my_module_id: my_module.id,
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team_id: my_module.project.team.id,
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protocol_type: 0
)
protocol.save(validate: false)
Step.where(my_module_id: my_module.id).find_each do |step|
step.update_column(:protocol_id, protocol.id)
end
end
remove_index :steps, column: :my_module_id
remove_foreign_key :steps, :my_modules
remove_column :steps, :my_module_id
change_column_null :steps, :protocol_id, false
end
def down
add_column :steps, :my_module_id, :integer
add_foreign_key :steps, :my_modules
add_index :steps, :my_module_id
MyModule.find_each do |my_module|
protocol = Protocol.where(my_module_id: my_module.id).first
if protocol.present?
Step.where(protocol_id: protocol.id).find_each do |step|
step.update_column(:my_module_id, my_module.id)
end
end
end
remove_index :steps, column: :protocol_id
remove_foreign_key :steps, :protocols
remove_column :steps, :protocol_id
# Simply drop the rest of the protocols
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# (the ones that are team-wide)
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remove_index :protocol_protocol_keywords, column: :protocol_id
remove_index :protocol_protocol_keywords, column: :protocol_keyword_id
remove_foreign_key :protocol_protocol_keywords, :protocols
remove_foreign_key :protocol_protocol_keywords, :protocol_keywords
drop_table :protocol_protocol_keywords
remove_index :protocol_keywords, column: :name
drop_table :protocol_keywords
remove_index :protocols, column: :name
remove_index :protocols, column: :authors
remove_index :protocols, column: :description
remove_index :protocols, column: :added_by_id
remove_index :protocols, column: :my_module_id
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remove_index :protocols, column: :team_id
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remove_index :protocols, column: :parent_id
remove_index :protocols, column: :archived_by_id
remove_index :protocols, column: :restored_by_id
remove_foreign_key :protocols, column: :added_by_id
remove_foreign_key :protocols, :my_modules
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remove_foreign_key :protocols, :teams
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remove_foreign_key :protocols, column: :parent_id
remove_foreign_key :protocols, column: :archived_by_id
remove_foreign_key :protocols, column: :restored_by_id
drop_table :protocols
end
end