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Can't create new table with Geometry, "Error type modeified for geometry not allowed" #50

talltom opened this issue May 13, 2013 · 2 comments


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commented May 13, 2013

I have to say I'm impressed with GeoAlchemy2. Unfortunately, when I try and create a table with a geometry column I get the following error:

"sqlalchemy.exc.ProgrammingError: (ProgrammingError) type modifier is not allowed for type "geometry"
LINE 4: the_geom geometry(GEOMETRY,-1)"

Any ideas how I can fix this?

I'm using PostGIS 1.5 (which I guess might be the problem?),PostgreSQL 9.1 and GeoAlchemy2 0.2



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commented May 13, 2013

You can use the GeoAlchemy google group for questions:!forum/geoalchemy.

With PostGIS 1.5 you need to set management to True in your Geometry. See and

If that still does not work, please show what your model class looks like.


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commented May 14, 2013

That did it thanks, works like a charm now! Will make sure I post to the group in future. Cheers. T

@talltom talltom closed this May 14, 2013

amercader added a commit to ckan/ckanext-spatial that referenced this issue Apr 1, 2015

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