canvas-lms/db/migrate/20121001190034_assignment_o...

66 lines
2.2 KiB
Ruby

class AssignmentOverrideMigration < ActiveRecord::Migration
tag :predeploy
def self.up
create_table :assignment_overrides do |t|
t.timestamps
# generic info
t.integer :assignment_id, :null => false, :limit => 8
t.integer :assignment_version, :null => false
t.string :set_type, :null => :false
t.integer :set_id, :limit => 8
t.string :title
t.string :workflow_state, :null => false
# due at override
t.boolean :due_at_overridden, :default => false, :null => false
t.datetime :due_at
t.boolean :all_day
t.date :all_day_date
# unlock at override
t.boolean :unlock_at_overridden, :default => false, :null => false
t.datetime :unlock_at
# lock at override
t.boolean :lock_at_overridden, :default => false, :null => false
t.datetime :lock_at
end
if connection.adapter_name =~ /\Apostgresql/i
add_index :assignment_overrides, [:assignment_id, :set_type, :set_id],
:name => 'index_assignment_overrides_on_assignment_and_set',
:unique => true,
:where => "workflow_state='active' and set_id is not null"
else
# can't enforce unique without conditions, since when set_type is 'adhoc'
# and set_id null, there may be multiple overrides
add_index :assignment_overrides, [:assignment_id, :set_type, :set_id],
:name => 'index_assignment_overrides_on_assignment_and_set'
end
add_foreign_key :assignment_overrides, :assignments
create_table :assignment_override_students do |t|
t.timestamps
t.integer :assignment_id, :null => false, :limit => 8
t.integer :assignment_override_id, :null => false, :limit => 8
t.integer :user_id, :null => false, :limit => 8
end
add_index :assignment_override_students, [:assignment_id, :user_id], :unique => true
add_index :assignment_override_students, :assignment_override_id
add_foreign_key :assignment_override_students, :assignments
add_foreign_key :assignment_override_students, :assignment_overrides
add_foreign_key :assignment_override_students, :users
end
def self.down
drop_table :assignment_override_students
drop_table :assignment_overrides
end
end