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Here's my problem. I am trying to create a blog. I run 'rails new blog'. Everythign is OK until I try 'rake db:create'. It returns an error:

rake aborted! Please install the postgresql adapter: `gem install activerecord-postgresql-adap ter` (pg is not part of the bundle. Add it to Gemfile.)

When I try to install pg adapter I get this:

Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing activerecord-postgresql-adapter: ERROR: Failed to build gem native extension. F:/Ruby200-x64/bin/ruby.exe extconf.rb checking for pg_config... no No pg_config... trying anyway. If building fails, please try again with --with-pg-config=/path/to/pg_config checking for libpq-fe.h... no Can't find the 'libpq-fe.h header *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may

need configuration options.

My gemfile:

 source 'https://rubygems.org' gem 'rails', '3.2.12' # Bundle edge Rails instead: # gem 'rails', :git => 'git://github.com/rails/rails.git' gem "pg" # Gems used only for assets and not required # in production environments by default. group :assets do gem 'sass-rails', '~> 3.2.3' gem 'coffee-rails', '~> 3.2.1' # See https://github.com/sstephenson/execjs#readme for more supported runtimes # gem 'therubyracer', :platforms => :ruby gem 'uglifier', '>= 1.0.3' end gem 'jquery-rails' # To use ActiveModel has_secure_password # gem 'bcrypt-ruby', '~> 3.0.0' # To use Jbuilder templates for JSON # gem 'jbuilder' # Use unicorn as the app server # gem 'unicorn' # Deploy with Capistrano # gem 'capistrano' # To use debugger # gem 'debugger'

Got any idea?

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  • try to run bundle install --path vendor/gems Some time ago, that helped me Commented Mar 11, 2013 at 13:19
  • Have you installed devkit? Commented Mar 14, 2013 at 3:35
  • You can look at this post : stackoverflow.com/questions/7086654/… Commented Mar 15, 2013 at 10:25

4 Answers 4

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+25

Do you have Postgres installed? If so, make sure that pg_config.exe is in the PATH. Alternatively use either --with-pg-config or –with-pg-dir key:

gem install pg --with-pg-config=<path>

See details in https://github.com/ged/ruby-pg/blob/master/README-Windows.rdoc

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2

Uninstall pg gem, and install postgres-pr for windows

Remove from Gemfile:

gem "pg"

and put:

gem "postgres-pr"

and run:

bundle install or gem install postgres-pr or however you are installing gems

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1

You are missing the library for postgresql. You can install it like this:

sudo apt-get install libpq-dev

Maybe also take a look at this old question.

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Problem is that I work on windows (yeah, I know it's wrong but I am only begginer) so sudo is not working here
Then maybe take a look at this one: stackoverflow.com/questions/7086654/…
0

I got the same error and I solved by setting correct file permissions to postgresql_adapter.rb

cd [YOUR_ACTIVERECORD_GEM_PATH]/lib/active_record/connection_adapters chmod 644 postgresql_adapter.rb

Somehow the file permissions of postgresql_adapter.rb were corrupted in my computer...

enter image description here

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