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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ref/contrib/gis/tutorial.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/ref/contrib/gis/tutorial.txt b/docs/ref/contrib/gis/tutorial.txt index 3a63493137..15863aee7b 100644 --- a/docs/ref/contrib/gis/tutorial.txt +++ b/docs/ref/contrib/gis/tutorial.txt @@ -671,6 +671,17 @@ of abstraction:: __ http://spatialreference.org/ref/epsg/32140/ +.. admonition:: Raw queries + + When using :doc:`raw queries </topics/db/sql>`, you should generally wrap + your geometry fields with the ``asText()`` SQL function so as the field + value will be recognized by GEOS:: + + City.objects.raw('SELECT id, name, asText(point) from myapp_city') + + This is not absolutely required by PostGIS, but generally you should only + use raw queries when you know exactly what you are doing. + Lazy Geometries --------------- Geometries come to GeoDjango in a standardized textual representation. Upon |