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Give a nice message if there are duplicate migrations instead of raising a strange insert error

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This commit is contained in:
Jeremy Kemper 2008-06-04 12:06:55 -07:00
parent 30a0ebb3eb
commit e660055472
1 changed files with 14 additions and 3 deletions
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15
activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
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@ -331,15 +331,26 @@ module ActiveRecord
end
def assume_migrated_upto_version(version)
version = version.to_i
sm_table = quote_table_name(ActiveRecord::Migrator.schema_migrations_table_name)
migrated = select_values("SELECT version FROM #{sm_table}").map(&:to_i)
versions = Dir['db/migrate/[0-9]*_*.rb'].map do |filename|
filename.split('/').last.split('_').first.to_i
end
execute "INSERT INTO #{sm_table} (version) VALUES ('#{version}')" unless migrated.include?(version.to_i)
(versions - migrated).select { |v| v < version.to_i }.each do |v|
unless migrated.include?(version)
execute "INSERT INTO #{sm_table} (version) VALUES ('#{version}')"
end
inserted = Set.new
(versions - migrated).each do |v|
if inserted.include?(v)
raise "Duplicate migration #{v}. Please renumber your migrations to resolve the conflict."
elsif v < version
execute "INSERT INTO #{sm_table} (version) VALUES ('#{v}')"
inserted << v
end
end
end