Add metadata to schema_migrations

migrated_at: timestamp when migration run
fingerprint: md5 hash of migration source
name: filename without version or extension

1 files changed, 17 insertions, 7 deletions

diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb
index 22347fcaef..4ce276d4bf 100644
--- a/activerecord/lib/active_record/migration.rb
+++ b/activerecord/lib/active_record/migration.rb
@@ -1,5 +1,6 @@
 require "active_support/core_ext/class/attribute_accessors"
 require 'set'
+require 'digest/md5'
 
 module ActiveRecord
   # Exception that can be raised to stop migrations from going backwards.
@@ -554,6 +555,10 @@ module ActiveRecord
 
     delegate :migrate, :announce, :write, :to => :migration
 
+    def fingerprint
+      @fingerprint ||= Digest::MD5.hexdigest(File.read(filename))
+    end
+
     private
 
       def migration
@@ -724,7 +729,7 @@ module ActiveRecord
       raise UnknownMigrationVersionError.new(@target_version) if target.nil?
       unless (up? && migrated.include?(target.version.to_i)) || (down? && !migrated.include?(target.version.to_i))
         target.migrate(@direction)
-        record_version_state_after_migrating(target.version)
+        record_version_state_after_migrating(target)
       end
     end
 
@@ -747,7 +752,7 @@ module ActiveRecord
         begin
           ddl_transaction do
             migration.migrate(@direction)
-            record_version_state_after_migrating(migration.version)
+            record_version_state_after_migrating(migration)
           end
         rescue => e
           canceled_msg = Base.connection.supports_ddl_transactions? ? "this and " : ""
@@ -805,13 +810,18 @@ module ActiveRecord
       raise DuplicateMigrationVersionError.new(version) if version
     end
 
-    def record_version_state_after_migrating(version)
+    def record_version_state_after_migrating(target)
       if down?
-        migrated.delete(version)
-        ActiveRecord::SchemaMigration.where(:version => version.to_s).delete_all
+        migrated.delete(target.version)
+        ActiveRecord::SchemaMigration.where(:version => target.version.to_s).delete_all
       else
-        migrated << version
-        ActiveRecord::SchemaMigration.create!(:version => version.to_s)
+        migrated << target.version
+        ActiveRecord::SchemaMigration.create!(
+          :version => target.version.to_s,
+          :migrated_at => Time.now,
+          :fingerprint => target.fingerprint,
+          :name => File.basename(target.filename,'.rb').gsub(/^\d+_/,'')
+        )
       end
     end