activerecord_postgis_adapter: undefined method `point' for nil:NilClass

Question

Problem

90% sure it\'s a setup error on my end, but I can\'t do self.factory and trying to access lonlat gives me an exception \"undefined method `point\' for nil:

Answer 1

I created a github issue with a less consise but more detailed explaination.

RGeos depends on GEOS. This error is a result of RGeos not being able to load GEOS.

To check if this is the issue:

$ rails c
> RGeo::Geos.supported?
=> false

To check if you have GEOS installed:

geos-config --version

If GEOS isn't installed:

brew install geos

If GEOS is installed, fix your installed RGeo:

$ geos-config --prefix
/usr/local/Cellar/geos/3.5.0
$ gem install rgeo -- --with-geos-dir=/usr/local/Cellar/geos/3.5.0

Should now be installed correctly and your errors fixed. You can check as we did above:

$ rails c
> RGeo::Geos.supported?
=> true

If this doesn't work uninstall ALL versions of geos and rgeo:

$ brew uninstall geos
$ gem uninstall rgeo

Re-install geos and rgeo as instructed above. You should have gem 'rgeo' in your Gemfile and after you bundle, you should see this as one of the outputs: "Installing rgeo 0.4.0 with native extensions"