Commit c50b611f authored by Jean-Philippe Lang's avatar Jean-Philippe Lang

Adds a unique index on members (#6826).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4369 e93f8b46-1217-0410-a6f0-8f06a7374b81
parent 73167fb4
class AddUniqueIndexOnMembers < ActiveRecord::Migration
def self.up
# Reassign MemberRole rows if needed
MemberRole.update_all("member_id =" +
" (SELECT min(m2.id) FROM #{Member.table_name} m1, #{Member.table_name} m2" +
" WHERE m1.user_id = m2.user_id AND m1.project_id = m2.project_id" +
" AND m1.id = #{MemberRole.table_name}.member_id)")
# Remove duplicates
Member.connection.select_values("SELECT m.id FROM #{Member.table_name} m" +
" WHERE m.id > (SELECT min(m1.id) FROM #{Member.table_name} m1 WHERE m1.user_id = m.user_id AND m1.project_id = m.project_id)").each do |i|
Member.delete_all(["id = ?", i])
end
# Then add a unique index
add_index :members, [:user_id, :project_id], :unique => true
end
def self.down
end
end
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