I am doing a project using Ruby On Rails with PostgreSQL as the
database. I have not seen the term polymorphic used with databases
except with Rails so I will quickly describe it.
Instead of holding just an id as a foreign key, the record holds a
type field which is a string and an id. The
On Jul 6, 2007, at 2:31 AM, PFC wrote:
I am doing a project using Ruby On Rails with PostgreSQL as the
database. I have not seen the term polymorphic used with databases
except with Rails so I will quickly describe it.
Instead of holding just an id as a foreign key, the record holds a
type
On Thu, Jul 05, 2007 at 09:56:12PM -0500, Perry Smith wrote:
I am doing a project using Ruby On Rails with PostgreSQL as the
database. I have not seen the term polymorphic used with databases
except with Rails so I will quickly describe it.
You have now :)
O Here is how I implemented something very similar (in PHP) :
- Node class and several derived classes.
- nodes table which contains the fields for the base class with
node_id as a PK and a field which indicates the class
- nodes_*** tables which contain the extra fields for
On Jul 6, 2007, at 8:01 AM, David Fetter wrote:
On Thu, Jul 05, 2007 at 09:56:12PM -0500, Perry Smith wrote:
I am doing a project using Ruby On Rails with PostgreSQL as the
database. I have not seen the term polymorphic used with databases
except with Rails so I will quickly describe it.
On Jul 6, 2007, at 8:23 AM, PFC wrote:
The advantage of my approach is that :
[ snip -- all very good stuff ]
I think I can make something like this into Rails fairly easy.
Hm, another reason why I don't really like the Rails approach...
do they at least use unique IDs ? Please
On Fri, Jul 06, 2007 at 08:39:50AM -0500, Perry Smith wrote:
On Jul 6, 2007, at 8:01 AM, David Fetter wrote:
On Thu, Jul 05, 2007 at 09:56:12PM -0500, Perry Smith wrote:
I am doing a project using Ruby On Rails with PostgreSQL as the
database. I have not seen the term polymorphic used
On Jul 6, 2007, at 10:36 AM, David Fetter wrote:
At some point, you're going to realize that Rails is the problem, not
the solution. It's written by people who do not understand what a
shared data store is and reflects problems inherent in its native
database platform: MySQL 3.23.
Thats
On 7/6/07, David Fetter [EMAIL PROTECTED] wrote:
At some point, you're going to realize that Rails is the problem, not
the solution. It's written by people who do not understand what a
shared data store is and reflects problems inherent in its native
database platform: MySQL 3.23.
This is
I am doing a project using Ruby On Rails with PostgreSQL as the
database. I have not seen the term polymorphic used with databases
except with Rails so I will quickly describe it.
Instead of holding just an id as a foreign key, the record holds a
type field which is a string and an id.
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