# Hi..Guys new plugin again **URL:** \ **Category:** Rails\ **Created:** [September 5, 2007, 6:49am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810 "2007-09-05T06:49:19Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 6:49am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/1 "2007-09-05T06:49:19Z")
Hi… Guys new plugin again Foreign Key Associations is a plugin that automatically creates associations based on foreign-keys. The associations are created at runtime-ie. as your ActiveRecord models are loaded-so they will always be up-to-date. For example, given a foreign-key from a customer\_id column in an orders table to an id column in a customers table, the plugin creates: Order.belongs\_to :customerCustomer.has\_many :orders If there is a uniqueness constraint-eg unique index-on a foreign-key column, then the plugin will creates a has\_one instead of a has\_many. For example, given a foreign-key from an order\_id column with a uniqueness constraint in an invoices table to an id column in an orders table, the plugin creates: Invoice.belongs\_to :orderOrder.has\_one :invoice Additionally, if there is a position column in the child table, the parent association will be created with an order clause. For example, given a foreign-key from a order\_id column in an order\_lines table containing a position column, to an id column in a orders table, the plugin creates: OrderLine.belongs\_to :ordersOrder.has\_many :lines, :order =\> :position The plugin also supports the creation of has\_and\_belongs\_to\_many associations. For example, given the tables product\_product\_categories with foreign- keys to both the product and product\_categories tables, the plugin creates: Product.has\_and\_belongs\_to\_many :categoriesProductCategory.has\_and\_belongs\_to\_many :products And finally, notice that in one of the previous examples, the association name used for the Order.has\_many is :lines and not :order\_lines. More specifically, the plugin removes the prefix from has\_many and has\_one associations if the the name of parent class forms a proper prefix of the child class name. The plugin fully supports and understands the following active-record configuration properties: config.active\_record.pluralize\_table\_names config.active\_record.table\_name\_prefix config.active\_record.table\_name\_suffix Installation EDGE To install using SVN: ruby script/plugin install svn://rubyforge.org/var/svn/redhillonrails/trunk/vendor/plugins/foreign\_key\_associations or using HTTP: ruby script/plugin install [http://www.redhillonrails.org/svn/trunk/vendor/plugins/foreign\_key\_](http://www.redhillonrails.org/svn/trunk/vendor/plugins/foreign_key_) ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 8:21am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/2 "2007-09-05T08:21:26Z")
Stop flooding the group with these posts. ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 9:04am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/3 "2007-09-05T09:04:29Z")
good work buddy, flood away…you did the hard work and should be able to get some acknowledgment for it announcing developments like this is just what this mailing list is for… high fives all round…down low for Rein H. ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 9:09am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/4 "2007-09-05T09:09:30Z")
Neither this nor any of the 15 other posts this person has made in a 15 minute span have been their work. ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 9:13am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/5 "2007-09-05T09:13:30Z")
Besides, the link to the plugin (that he didn’t write) isn’t even valid. ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 11:16am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/6 "2007-09-05T11:16:11Z")
Rein H. wrote: > Besides, the link to the plugin (that he didn’t write) isn’t even > valid. I agree with Rein H., stop flooding… “One question at the time, and wait till you get answer before asking a new one” ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 12:22pm UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/7 "2007-09-05T12:22:57Z")
sorry guys, I had not seen all the other posts… stop flooding foo ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 6, 2007, 5:19am UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/8 "2007-09-06T05:19:48Z")
For the record, I’m all for announcing open source developments here. I was subscribed to ruby forge for over a year before it got to be too much. I plan on making a few such announcements myself. 🙂 However, I’m less keen on announcing other people’s hard work and conveniently forgetting to give them credit. Rein ---
**Author:** ![jhonny](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/919ad9/32.png) [@jhonny](https://www.ruby-forum.com/u/jhonny)\ **Post date:** [September 5, 2007, 2:40pm UTC](https://www.ruby-forum.com/t/hi-guys-new-plugin-again/113810/9 "2007-09-05T14:40:39Z")
I was 2 seconds from marking all of Jhonny’s posts as spam when I noticed that they are all on topic… Stop flooding Jason