NameError: uninitialized constant ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::TableDefinition

Question

Generated rails 4.2.0 app and added activerecord-postgis-adapter and edited the database.yml file accordingly.

But now when I do rake db:create, it blows with the error:

± be rake db:create                                                                                                         2.1.0
rake aborted!
NameError: uninitialized constant ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::TableDefinition
/Users/millisami/Railsapps/showme/config/application.rb:16:in `<top (required)>'
/Users/millisami/Railsapps/showme/Rakefile:4:in `require'
/Users/millisami/Railsapps/showme/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)

Answer 1

Apparently, the activerecord-postgis-adapter gem is not yet compatible with ActiveRecord 4.2.

Either use the standard pg gem (that is supported natively by ActiveRecord), or downgrade to 4.1.

Answer 2

Version 3.0.0 of activerecord-postgis-adapter has been released. It supports ActiveRecord 4.2.

gem "activerecord-postgis-adapter"

https://github.com/rgeo/activerecord-postgis-adapter

https://rubygems.org/gems/activerecord-postgis-adapter