Rails - Nov 2005 - Relational tables - dependent => :update ?

I have two classes ''Company'' and
''CompanyType''

Company has_one :company_type and
CompanyType belongs_to :company

My company_type table contains a field called "ctype" - when I modify 
this, I''d like all companies of that type to update to the new modified
name.

Is there a way to do this with dependencies, or would anyone be kind 
enough to suggest another way?

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Posted via http://www.ruby-forum.com/.

I think you have the relationships reversed. If a company can be one of many
different types, your  relationships should be:

Company
belongs_to :company_type, :foreign_key => ''ctype_id''

CompanyType
has_many :companies

and your tables should be:

Company
id
...
ctype_id

Company_Types
id
ctype
...

Now you may change the value for ctype in the Company Types table and the
changes will be reflected in all the companies that reference that company
type. eg

mycompany.ctype.ctype

Hammed

On 30/11/05, Nick Ce <graphis1-ee4meeAH724@public.gmane.org>
wrote:
>
> I have two classes ''Company'' and
''CompanyType''
>
> Company has_one :company_type and
> CompanyType belongs_to :company
>
> My company_type table contains a field called "ctype" - when I
modify
> this, I''d like all companies of that type to update to the new
modified
> name.
>
> Is there a way to do this with dependencies, or would anyone be kind
> enough to suggest another way?
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

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hammed wrote:
> I think you have the relationships reversed.
You were right! Absolutely fantastic - thanks ever so much for your 
help. I''m still getting to grips with RoR and table relationships.

Many thanks again.

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