# Database constraints: maintained plugins?

**URL:** <https://www.ruby-forum.com/t/database-constraints-maintained-plugins/165392>\
**Category:** Rails\
**Created:** [April 13, 2009, 5:07pm UTC](https://www.ruby-forum.com/t/database-constraints-maintained-plugins/165392 "2009-04-13T17:07:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wickie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/ba9def/32.png) [@wickie](https://www.ruby-forum.com/u/wickie)\
**Post date:** [April 13, 2009, 5:07pm UTC](https://www.ruby-forum.com/t/database-constraints-maintained-plugins/165392/1 "2009-04-13T17:07:29Z")

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Are there any plugins that

- add support for foreign key constraints
- create corresponding validations for NOT NULL constraints etc.
- are still maintained

In the past, I’ve used several plugins by RedHill Consulting, but  
apparently the company does no longer exist and the plugins are not  
maintained anymore. Looking around on

[http://agilewebdevelopment.com/plugins](http://agilewebdevelopment.com/plugins)

the state of similar plugins appears to be equally iffy. Are there any  
suggestions for alternatives?

Michael

–  
Michael S.  
[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
[http://www.schuerig.de/michael/](http://www.schuerig.de/michael/)