Thanks Leonel,
I'd actually seen that solution, but that is specifically validating that
the coordinates of a Point(X Y) WKT string are in the domain of a
geographic coordinate system. I'm interested in the more general assessment
of whether an alleged WKT string is well formatted - could be any of the
geometry types.
My solution doesn't actually work without importing the Exception - and
those are specific to backends. This fixes it, but is this the best way to
catch the error in a general way?
if geometry is not None:
try:
geo_wkb = db.executesql("select
st_geomfromtext('{}');".format(geometry))
except db._adapter.driver.ProgrammingError:
raise HTTP(404, "Invalid WKT Geometry")
Cheers,
David
On Friday, 15 March 2019 13:21:43 UTC, David Orme wrote:
>
>
> Hi,
>
> I'm looking for an approach to validate a user provided WKT geometry. The
> obvious answer is to let the spatial backend do the validation, so this
> works:
>
> if geometry is not None:
> try:
> geometry = db.executesql("select
> st_geomfromtext('{}');".format(geometry))
> except ProgrammingError:
> raise HTTP(404, "Invalid WKT Geometry")
>
> I suspect that is probably pretty robust across backends but am I missing
> something more general?
>
> Cheers,
> David
>
>
>
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