diff options
| author | Sandip Ransing <sandip@joshsoftware.com> | 2012-04-06 01:11:42 +0530 |
|---|---|---|
| committer | Sandip Ransing <sandip@joshsoftware.com> | 2012-04-06 01:11:42 +0530 |
| commit | b11113f924d2eb2acbe836954d17a02163f45275 (patch) | |
| tree | 0ab8a2cf566f6cb761339763da2448577b04e7c1 /guides/source | |
| parent | e59b66979236c93b42467f5656da28179db1397c (diff) | |
| download | rails-b11113f924d2eb2acbe836954d17a02163f45275.tar.gz rails-b11113f924d2eb2acbe836954d17a02163f45275.tar.bz2 rails-b11113f924d2eb2acbe836954d17a02163f45275.zip | |
Where migration can get wrong help added
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/migrations.textile | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/guides/source/migrations.textile b/guides/source/migrations.textile index 1d8c1e03f3..a565974227 100644 --- a/guides/source/migrations.textile +++ b/guides/source/migrations.textile @@ -928,3 +928,13 @@ features, the +execute+ method can be used to execute arbitrary SQL. You could also use some plugin like "foreigner":https://github.com/matthuhiggins/foreigner which add foreign key support to Active Record (including support for dumping foreign keys in +db/schema.rb+). + +h3. Where you may get into trouble ? + +While running specific migrations with VERSION specified, By mistake if you misspell +command you may get into big trouble. + +Consider scenario where you want to run down migration +db:migrate:down VERSION=324213490000+ +By mistake if you type something like +db:migrate :down VERSION=324213490000+ then it will +change the complete meaning of migration command and it will be migrated like you are +executing +db:migrate VERSION=32421349000+ |