[postgis-users] Re: Ruby/PostGIS

[Charlie Savage]

Two approaches you could take:

1.  Use geos.  You'll see the latest head version of GEOS now comes with 
Ruby SWIG bindings that strk and I have been working on.  This is what 
I've been doing and its in pretty good shape.

2.  Use ogr (in the gdal project).  There was a lot of work put into the 
SWIG bindings last fall, and they are in good shape for OGR and OSR.

You'll also have to modify the low-level internals of active record and 
the pg connection class.  The issue is that at the very bottom active 
record has a big switch statement that tries to figure out the returned 
column type (i.e., string, float, date, etc.).  Unfortunately there is 
no way to register a custom type - so you'll have to override the 
appropriate methods.

Thanks,

Charlie


Scott Davis wrote:
> Anyone doing any work with Ruby/Rails and PostGIS?
> 
> There seems to be decent support for PostgreSQL in ActiveRecord -- 
> http://wiki.rubyonrails.com/rails/pages/PostgreSQL
> 
> The next step is getting ActiveRecord tweaked to recognize the OGC 
> datatypes coming out. Since there are Java and C bindings, is SWIG an 
> option?
> 
> Cheers,
> s
> 
> Scott Davis
> scott at davisworld.org