在Heroku上启用Ruby PostGIS支持

pr1*_*001 5 postgis ruby-on-rails heroku

我正在尝试在Heroku上的Rails应用程序中启用PostGIS.我Gemfileactiverecord-postgis-adapter宝石包括:

gem 'activerecord-postgis-adapter', '3.0.0'
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但是,在启动我的实例后,我没有看到启用完全支持:

$ heroku run irb
Running `irb` attached to terminal... up, run.5549
irb(main):001:0> require 'rgeo'
=> true
irb(main):002:0> RGeo::Geos.supported?
=> false
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我已经添加了Postoku 文章中指定的heroku-geo-buildpack,尽管我使用的是更新的,真正的multi-buildpack格式:

$ heroku buildpacks
=== staging Buildpack URLs
1. https://github.com/cyberdelia/heroku-geo-buildpack.git#1.3
2. https://github.com/heroku/heroku-buildpack-ruby.git#v140
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我很困惑,因为我的构建过程看起来是正确的:

-----> Multipack app detected
-----> Fetching custom git buildpack... done
-----> geos/gdal/proj app detected
       Using geos version: 3.4.2
       Using gdal version: 1.11.1
       Using proj version: 4.8.0_1
-----> Vendoring geo libraries done
-----> Fetching custom git buildpack... done
-----> Ruby app detected
-----> Compiling Ruby/Rails
...
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我错过了什么?我没有BUILDPACK_URL环境变量集,因为我收集了旧的multi-buildpack方法.

Bru*_*ric 4


PostGIS 可以与 Heroku Free dyno 和: - Rails 4.2
- activerecord-postgis-adapter 3.1.4 配合 使用

你必须:

  1. 像这样设置你的 config/database.yml :

default: &default
  adapter: postgis
  encoding: unicode
  # For details on connection pooling, see rails configuration guide
  # http://guides.rubyonrails.org/configuring.html#database-pooling
  pool: 5

development:
  <<: *default
  database: adopt_your_geek_development
  username: postgres
  host: mydb.com
  port: 9999
  postgis_extension: postgis
  schema_search_path: public,postgis

...

production:
  <<: *default
  database: appname_production
  username: appname
  password: <%= ENV['ADOPT_YOUR_GEEK_DATABASE_PASSWORD'] %>
  postgis_extension: postgis
  schema_search_path: public,postgis
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  1. 添加构建包:

$ heroku buildpacks:add https://github.com/ddollar/heroku-buildpack-multi.git
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使用以下 .buildpacks 文件:

$ cat .buildpacks 
https://github.com/cyberdelia/heroku-geo-buildpack.git
https://github.com/heroku/heroku-buildpack-ruby.git
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  1. 然后在 config/environments/Production.rb 中添加一点 Monckey 补丁

module ActiveRecord
   module ConnectionHandling
     class MergeAndResolveDefaultUrlConfig
       private
       def config
         @raw_config.dup.tap do |cfg|
           if url = ENV['DATABASE_URL']
             cfg[@env] ||= {}
             cfg[@env]["url"] ||= url.try(:gsub, "postgres", "postgis")
           end
         end
       end
     end
   end
end
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我现在在 Heroku 免费 dyno 和免费 postgres 上为我工作。